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Hosey, Melfi & Pankhurst: Zoo Animals

References P - Z

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Packard, J., Babbitt, K., Hannon, P., and Grant, W. (1990) Infanticide in captive collared peccaries (Tayassu tajacu), Zoo Biology, 9(1): 49–53 [DOI: 10.1002/zoo.1430090106].

Pankhurst, S. J. (1998) The Social Organisation of the Mara (Dolichotis patagonum) at Whipsnade Wild Animal Park, unpublished PhD thesis, Cambridge: University of Cambridge.

Pankhurst, S. J. and Knight, K. (2008) Zoo Research Guidelines: Behavioural Profiling of Zoo Animals, London: BIAZA (in press).

Pankhurst, S. J., Plumb, A., and Walter, O. (2008) Zoo Research Guidelines: Getting Zoo Research Published, London: BIAZA.

Parker, M., Goodwin, D., Redhead, E., and Mitchell, H. (2006) The effectiveness of environmental enrichment on reducing stereotypic behaviour in two captive vicugna (Vicugna vicugna), Animal Welfare, 15: 59–62.

Pearce, J. M. (1997) Animal Learning and Cognition (2nd edn), Hove: Psychology Press.

Pearce-Kelly, P., Mace, G. M., and Clarke, D. (1995) The release of captive-bred snails (Partula taeniata) into a seminatural environment, Biodiversity and Conservation, 4: 645–63 [DOI: 10.1007/BF00222520].

Pearce-Kelly, P., Jones, R., Clarke, D., Walker, C., Atkin, P., and Cunningham, A. A. (1998) The captive rearing of threatened Orthoptera: a comparison of the conservation potential and practical considerations of two species’ breeding programmes at the Zoological Society of London, Journal of Insect Conservation, 2: 201–10 [DOI: 10.1023/A:1009643729536].

Pearson, G. L. (1977) Vaccine-induced canine distemper virus in black-footed ferrets, Journal of the American Veterinary Medicine Association, 170: 103–9.

Peeters, E. and Geers, R. (2006) Influence of provision of toys during transport and lairage on stress responses and meat quality of pigs, Animal Science, 82: 591–5.

Pennisi, E. (2001) Zoo’s new primate exhibit to double as research lab, Science, 293: 1247 [DOI: 10.1126/science.293.5533.1247] [PubMed: 11509707].

Perkins, L. A. (1992) Variables that influence the activity of captive orang-utans, Zoo Biology, 11(3): 177–86 [DOI: 10.1002/zoo.1430110306].

Peterson, R. O., Jacobs, A. K., Drummer, T. D., Mech, L. D., and Smith, D. W. (2002) Leadership behavior in relation to dominance and reproductive status in gray wolves, Canis lupus, Canadian Journal of Zoology, 80(8): 1405–12.

Pickard, A. (2003) Reproductive and welfare monitoring for the management of ex situ populations in W. Holt, A. Pickard, J. Rodger, and D. Wildt (eds), Reproductive Science and Integrated Conservation, Cambridge: Cambridge University Press, pp. 132–46.

Pickering, S., Creighton, E., and Stevens-Wood, B. (1992) Flock size and breeding success in flamingos, Zoo Biology, 11: 229–34 [DOI: 10.1002/zoo.1430110402].

Picq, J.-L. (2007) Aging affects executive functions and memory in mouse lemur primates, Experimental Gerontology, 42(3): 223–32 [DOI: 10.1016/j.exger.2006.09.013] [PubMed: 17084573].

Pierce, J. (2005) A system for mass culture of upside-down jellyfish Cassiopea spp as a potential food item for medusivores in captivity, International Zoo Yearbook, 39: 62–9.

Pinder, N. J. and Barkham, J. P. (1978) An assessment of the contribution of captive breeding to the conservation of rare mammals, Biological Conservation, 13: 187–245 [DOI: 10.1016/0006-3207(78)90035-6].

Pizzi, R. (2004) Slap me with a dead penguin: what we can learn from 1001 penguin post-mortems at Edinburgh Zoo in C. Macdonald (ed.), Proceedings of the Sixth Annual Symposium on Zoo Research, 8–9 July, Edinburgh: BIAZA, pp. 253–55.

Plowman, A. B. (2003) A note on a modification of the spread of participation index allowing for unequal zones, Applied Animal Behaviour Science, 83: 331–6 [DOI: 10.1016/S0168-1591(03)00142-4].

Plowman, A. B. (ed.). (2006) Zoo Research Guidelines: Statistics for Typical Zoo Datasets, London: BIAZA.

Plowman, A. B. and Knowles, L. (2003) Overcoming habituation in an enrichment programme for tigers in: V. J. Hare, K. E. Worley, and B. Hammond (eds) Proceedings of the Fifth International Conference on Environmental Enrichment, 49 November 2001, Taronga Zoo, Sydney, Australia. San Diego, CA: The Shape of Enrichment Inc., pp. 263–8.

Plowman, A. B. and Turner, I. (2001a) A survey and database of browse use for mammals in UK and Irish zoos in S. Wehnelt and C. Hudson (eds), Proceedings of the Third Annual Symposium on Zoo Research, 9–10 July, Chester: BIAZA, pp. 50–5.

Plowman, A. B. and Turner, I. (2001b) Database of Browse Used in Federation Zoos, CDROM, London: BIAZA.

Plowman, A. B. and Turner, I. (2006) A survey and database of browse use for mammals in UK and Irish zoos in A. Fidgett, M. Claus, K. Eulenberger, J.-M. Hatt, I. Hume, G. Janssens, and J. Nijboer (eds), Zoo Animal Nutrition, Vol. III, Fürth: Filander Verlag, pp. 193–7.

Plowman, A. B., Jordan, N. R., Anderson, N., Condon, E., and Fraser, O. (2005) Welfare implications of captive primate population management: behavioural and psycho-social effects of female-based contraception, oestrus and male removal in hamadryas baboons (Papio hamadryas), Applied Animal Behaviour Science, 90: 155–65 [DOI: 10.1016/j.applanim.2004.08.014].

Plowman, A. B., Hosey, G., and Stevenson, M. (2006) Zoo Research Guidelines: Surveys and Questionnaires, London: BIAZA.

Plowman, A., Green, K., and Taylor, L. (2008) Should zoo food be chopped? in A. Fidgett (ed.) Proceedings of the Fifth European Zoo Nutrition Conference, Chester Zoo, Chester. (in press).

Pochon, V. (1998) Mixed species exhibit for Eastern black-and-white colobus and patas monkeys, International Zoo Yearbook, 36: 69–73 [DOI: 10.1111/j.1748-1090.1998.tb02886.x].

Polakowski, W. (1987) Zoo Design: The Reality of Wild Illusions, Ann Arbor, MI: University of Michigan, The School of Natural Sciences.

Pond, W. G., Church, D. C., Pond, K., and Schoknecht, P. A. (2005) Basic Animal Nutrition and Feeding (5th edn), New York: John Wiley & Sons.

Poole, T. (1999) UFAW Handbook on the Care and Management of Laboratory Animals (7th edn), Oxford: Blackwell Science.

Pope, C. E. (2000) Embryo technology in conservation efforts for endangered felids, Theriogenology, 53: 163–74 [DOI: 10.1016/S0093-691X(99)00249-6] [PubMed: 10735071].

Popp, J. W. (1984) Interspecific aggression in mixed ungulate species exhibits, Zoo Biology, 3: 211–19 [DOI: 10.1002/zoo.1430030304].

Pounds, J. A., Bustamante, A. R., Coloma, L. A., Consuegra, J. A., Fogden, M. P., Foster, P. N., La Marca, E., Masters, K. L., Merino-Viteri, A., Puschendorf, R., Ron, S. R., Sànchez-Azofeifa, G. A., Still, C. J., and Young, B. E. (2006) Widespread amphibian extinctions from epidemic disease driven by global warming, Nature, 439: 161–7 [DOI: 10.1038/nature04246].

Povey, K. D. and Rios, J. (2002) Using interpretive animals to deliver affective messages in zoos, Journal of Interpretation Research, 7: 19–28.

Powell, D. (1995) Preliminary evaluation of environmental enrichment techniques for African lions (Panthera leo), Animal Welfare, 4: 361–71.

Powell, D. M., Carlstead, K., Tarou, L. R., Brown, J. L., and Monfort, S. L. (2006) Effects of construction noise on behavior and cortisol levels in a pair of captive giant pandas (Ailuropoda melanoleuca), Zoo Biology, 25: 391–408 [DOI: 10.1002/zoo.20098].

Preston, D. J. (1983) Jumbo, king of elephants, Natural History, 92: 80–3.

Price, D. (2000) Psychological and neural mechanisms of the affective dimension of pain, Science, 288: 1769–72 [DOI: 10.1126/science.288.5472.1769] [PubMed: 10846154].

Price, E. and Caldwell, C. A. (2007) Artificially generated cultural variation between two groups of captive monkeys, Colobus guereza kikuyuensis, Behavioural Processes, 74: 13–20.

Price, E. C., McGivern, A.-M., and Ashmore, L. (1991) Vigilance in a group of free-ranging cotton-top tamarins Saguinus oedipus, Dodo: Journal of the Jersey Wildlife Preservation Trust, 27: 41–9.

Price, E. C., Ashmore, L. A., and McGivern, A.-M. (1994) Reactions of zoo visitors to free-ranging monkeys, Zoo Biology, 13: 355–73 [DOI: 10.1002/zoo.1430130409].

Price, E. E. and Stoinski, T. S. (2007) Group size: determinants in the wild and implications for the captive housing of wild mammals in zoos, Applied Animal Behaviour Science, 103: 255–64 [DOI: 10.1016/j.applanim.2006.05.021].

Price, E. O. (1984) Behavioural aspects of animal domestication, Quarterly Review of Biology, 59: 1–32 [DOI: 10.1111/j.1469-185X.1984.tb00401.x].

Provenza, F. D., Scott, C. B., Phy, T. S., and Lynch, J. J. (1996) Preference of sheep for foods varying in flavors and nutrients, Journal of Animal Science, 74: 2355–61 [PubMed: 8904703].

Prusky, G. T., Reidel, C., and Douglas, R. M. (2000) Environmental enrichment from birth enhances visual acuity but not place learning in mice, Behavioural Brain Research, 114: 11–15 [DOI: 10.1016/S0166-4328(00)00186-8] [PubMed: 10996041].

Pryor, K. (2002) Don t Shoot the Dog! The New Art of Teaching and Training, Dorking: Ringpress Press.

Puan, C. L. and Zakaria, M. (2007) Perception of visitors towards the role of zoos: a Malaysian perspective, International Zoo Yearbook, 41: 226–32 [DOI: 10.1111/j.1748-1090.2007.00009.x].

Pullen, K. (2005) Preliminary comparisons of male/male interactions within bachelor and breeding groups of western lowland gorillas (Gorilla gorilla gorilla), Applied Animal Behaviour Science, 90: 143–53 [DOI: 10.1016/j.applanim.2004.08.016].

Pusey, A. and Packer, C. (1987) Dispersal and philopatry in B. Smuts, D. Cheney, R. Seyfarth, R. Wrangham, and T. Stuhsaker (eds), Primate Societies, Chicago, IL: University of Chicago Press, pp. 250–66.

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Quinn, H. and Quinn, H. (1993) Estimated number of snake species that can be managed by Species Survival Plans in North America, Zoo Biology, 12: 243–56 [DOI: 10.1002/zoo.1430120302].

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Rabb, G. B. (1994) The changing roles of zoological parks in conserving biological diversity, American Zoologist, 34: 159–64.

Rabb, G. B. and Saunders, C. D. (2005) The future of zoos and aquariums: conservation and caring, International Zoo Yearbook, 39: 1–26.

Rabb, G. B. and Sullivan, T. A. (1995) Coordinating conservation: global networking for species survival, Biodiversity and Conservation, 4: 536–43 [DOI: 10.1007/BF00222512].

Rabin, L. A. (2003) Maintaining behavioural diversity in captivity for conservation: natural behaviour management, Animal Welfare, 12: 85–94.

Rachels, J. (1976) Do animals have a right to liberty? in P. Singer and T. Regan (eds), Animal Rights and Human Obligations, Englewood Cliffs, New Jersey: Prentice Hall, pp. 205–23.

Radcliffe, R. W., Czekala, N. M., and Osofsky, S. A. (1997) Combined serial ultrasonography and fecal progestin analysis for reproductive evaluation of the female white rhinoceros (Ceratotherium simum simum): preliminary results, Zoo Biology, 16: 445–6 [DOI: 10.1002/(SICI)1098-2361(1997)16:5<445::AID-ZOO7>3.0.CO;2-A].

Radford, M. (2001) Animal Welfare Law in Britain: Regulation and Responsibility, Oxford: Oxford University Press.

Ralls, K., Lundrigan, B., and Kranz, K. (1987) Mother–young relationships in captive ungulates: spatial and temporal patterns, Zoo Biology, 6: 11–20 [DOI: 10.1002/zoo.1430060103].

Ramirez, K. (ed.). (1999) Animal Training: Successful Animal Management Through Positive Reinforcement, Chicago, IL: Shedd Aquarium Society.

Raphael, B. L. (2003) Chelonians (Turtles, Tortoises) in M. E. Fowler and M. E. Miller (eds), Zoo and Wild Animal Medicine (5th edn), Philadelphia, PA: Elsevier (Saunders), pp. 48–58.

Raven, P. H. (2002) Science, sustainability, and the human prospect, Science, 297: 954–8 [DOI: 10.1126/science.297.5583.954] [PubMed: 12169719].

Rawlins, C. G. C. (1985) Zoos and conservation: the last 20 years, Symposia of the Zoological Society of London, 54: 59–69.

Reade, L. S. and Waran, N. K. (1996) The modern zoo: how do people perceive zoo animals?, Applied Animal Behavioral Sciences, 4710: 109–18 [DOI: 10.1016/0168-1591(95)01014-9].

Reading, R. P. and Miller, B. J. (2007) Attitudes and attitude change among zoo visitors in A. Zimmermann, M. Hatchwell, L. Dickie, and C. West (eds), Zoos in the 21st Century: Catalysts for Conservation?, Cambridge: Cambridge University Press, pp. 63–91.

Reaka-Kudka, M. L., Wilson, D. E., and Wilson, E. O. (eds). (1996) Biodiversity II: Understanding and Protecting our Biological Resources, Washington DC: Joseph Henry Press.

Réale, D. and Festa-Bianchet, M. (2003) Predator-induced natural selection on temperament in bighorn ewes, Animal Behaviour, 65: 463–70 [DOI: 10.1006/anbe.2003.2100].

Redig, P. T. and Ackermann, J. (2000) Raptors in T. N. Tully, M. P. C. Lawton, and G. M. Dorrestein (eds), Avian Medicine, Oxford: Butterworth-Heinemann, pp. 180–214.

Redshaw, M. E. and Mallinson, J. J. C. (1991) Learning from the wild: improving the psychological and physical well-being of captive primates, Dodo: Journal of the Jersey Wildlife Preservation Trust, 2712: 18–26.

Reed, H. J., Wilkins, L. J., Austin, S. D., and Gregory, N. G. (1993) The effect of environmental enrichment during rearing on fear reactions and depopulation trauma in adult caged hens, Applied Animal Behaviour Science, 36: 39–46 [DOI: 10.1016/0168-1591(93)90097-9].

Rees, P. A. (2004) Low environmental temperature causes an increase in stereotypic behaviour in captive Asian elephants (Elephas maximus), Journal of Thermal Biology, 29: 37–43 [DOI: 10.1016/j.jtherbio.2003.10.004].

Rees, P. A. (2005a) The EC Zoos Directive: a lost opportunity to implement the Convention on Biological Diversity, Journal of International Wildlife Law and Policy, 8: 51–62 [DOI: 10.1080/13880290590913723].

Rees, P. A. (2005b) Will the EC Zoos Directive increase the conservation value of zoo research?, Oryx, 39: 128–31 [DOI: 10.1017/S0030605305000360].

Regal, P. (1980) Temperature and light requirements of captive reptiles in J. Murphy and J. Collins (eds), Reproductive Biology and Diseases in Captive Reptiles, St Louis, MO: Society for the Study of Amphibians and Reptiles, pp. 79–91.

Regan, J. (2005) The Manifesto for Zoos, Manchester: The John Regan Associates, Ltd.

Regan, T. (1983) The Case for Animal Rights, Berkeley, CA: University of California Press.

Regan, T. (1995) Are zoos morally defensible? in B. G. Norton, M. Hutchins, E. Stevens, and T. L. Maple (eds), Ethics on the Ark: Zoos, Animal Welfare and Wildlife Conservation, Washington DC/London: Smithsonian Institute Press, pp. 38–51.

Rehling, M. (2001) Octopus enrichment techniques in M. Hawkins, K. E.Worley, and B. Hammond (eds), Fifth International Conference on Environmental Enrichment, 4–9 November, Sydney, The Shape of Enrichment, Inc., pp. 94–8.

Reinhardt, V. (1994a) Caged Rhesus macaques voluntarily work for ordinary food, Primate 35: 95–8 [DOI: 10.1007/BF02381490].

Reinhardt, V. (1994b) ‘Safe pair formation technique for previously single-caged Rhesus macaques’, available online at. Reinhardt. V. (1995) Arguments for single-caging of Rhesus macaques: are they justified?, Animal Welfare Information Center Newsletter, 6: 1–2.

Reinhardt, V. (2003) Working with rather than against macaques during blood collection, Journal of Applied Animal Welfare Science, 6: 189–97 [DOI: 10.1207/S15327604JAWS0603_04] [PubMed: 14612267].

Reinhardt, V. and Reinhardt, A. (2000) Social enhancement for adult non-human primates in research laboratories: a review, Lab Animal, 29: 34–41.

Reinhardt, V. and Roberts, A. (1997) Effective feeding enrichment for non-human primates: a brief review, Animal Welfare, 6: 265–72.

Reinhardt, V., Liss, C., and Stevens, C. (1996) Space requirement stipulations for caged non-human primates in the United States: a critical review, Animal Welfare, 5: 361–72.

Reinhardt, V., Bryant, D., Kurth, B., Lynch, R., Asvestas, C., Byrum, R., Claire, M. S., and Seelig, D. (1998) Discussion: a plea for pair-housing of adult macaques, Laboratory Primate Newsletter, 37: 4.

Reiss, D. (2005) Enriching animals while enriching science: providing choice and control to dolphins in N. Clum, S.Silver, and P. Thomas (eds), Seventh Conference on Environmental Enrichment, 31 July–5 August, New York, The Shape of Enrichment, Inc., pp. 26–31.

Rendall, D. and Taylor, L. T. (1991) Female sexual behavior in the absence of male–male competition in captive Japanese macaques (Macaca fuscata), Zoo Biology, 10: 319–28 [DOI: 10.1002/zoo.1430100406].

Renner, M. J. and Lussier, J. P. (2002) Environmental enrichment for the captive spectacled bear (Tremarctos ornatus), Pharmacology Biochemistry, and Behavior, 73: 279–83 [DOI: 10.1016/S0091-3057(02)00786-4].

Rhoads, D. L. and Goldsworthy, R. J. (1979) The effects of zoo environments on public attitudes toward endangered wildlife, International Journal of Environmental Studies, 13: 283–7 [DOI: 10.1080/00207237908709834].

Richman, L. K. (2007) Elephant herpesviruses in M. E. Fowler and R. E. Miller (eds), Zoo and Wild Animal Medicine (6th edn), St Louis, MO: Saunders (Elsevier), pp. 349–54.

Robbins, C. T. (1993) Wildlife Feeding and Nutrition (2nd edn), New York, NY: Academic Press.

Roberts, R. L., Roytburd, L. A., and Newman, J. D. (1999) Puzzle feeders and gum feeders as environmental enrichment for common marmosets, Contemporary Topics in Laboratory Animal Science, 38: 27–31 [PubMed: 12086412].

Robertson, D. R. (1982) Fish faeces as fish food on a Pacific coral-reef, Marine Ecology Progress Series, 7: 253–65 [DOI: 10.3354/meps007253].

Robinson, M. H. (1989) The zoo that is not: education for conservation, Conservation Biology, 3: 213–15 [DOI: 10.1111/j.1523-1739.1989.tb00077.x].

Robinson, M. H. (1996a) Foreword in R. J. Hoage and W. A. Deiss (eds), New Worlds, New Animals: From Menagerie to Zoological Park in the Nineteenth Century, Baltimore, MD/London: John Hopkins University Press, pp. vii–xi.

Robinson, M. H. (1996b) The BioPark concept and the exhibition of mammals in D. G. Kleiman, M. E. Allen, K. V. Thompson, and S. Lumpkin (eds), Wild Mammals in Captivity: Principles and Techniques, Chicago, IL/London: University of Chicago Press, pp. 161–6.

Roca, A. L., Georgiadis, N., Pecon-Slattery, J., and O’Brien, S. J. (2001) Genetic evidence for two species of elephant in Africa, Science, 293: 1473–7 [DOI: 10.1126/science.1059936] [PubMed: 11520983].

Rodda, G., Bock, B., Burghardt, G., and Rand, A. (1988) Techniques for identifying individual lizards at a distance reveal influences of handling, Copeia, 1988(4): 905–13 [DOI: 10.2307/1445713].

Roeder, J.-J. (1980) Marking behaviour and olfactory recognition in genets (Genetta genetta L.; in Carnivora-Viverridae), Behaviour, 72: 200–10 [DOI: 10.1163/156853980X00113].

Roeder, J.-J. (1983) Études des interactions sociales entre mâle et femelle chez la genette (Genetta genetta L.): relations entre marquage olfactif et agression, Zeitschrift für Tierpsychologie, 61: 293–310.

Roeder, J.-J. (1984) Ontogenèse des systèmes de communication chez la genette (Genetta genetta L.), Behaviour, 90: 259–301 [DOI: 10.1163/156853984X00173].

Rollin, B. E. (1992) Animal Rights and Human Morality, New York: Prometheus Books.

Ross, S. R. (2006) Issues of choice and control in the behaviour of a pair of captive polar bears (Ursus maritimus), Behavioural Processes, 73: 117–20 [DOI: 10.1016/j.beproc.2006.04.003] [PubMed: 16687218].

Ross, S. R. and Lukas, K. E. (2006) Use of space in a non-naturalistic environment by chimpanzees (Pan troglodytes) and lowland gorillas (Gorilla gorilla gorilla), Applied Animal Behaviour Science, 96: 143–52 [DOI: 10.1016/j.applanim.2005.06.005].

Rothfels, N. (2002) Savages and Beasts: The Birth of the Modern Zoo, Baltimore, MD/London: John Hopkins University Press.

Rothschild, B. M., Rothschild, C., and Woods, R. J. (2001) Inflammatory arthritis in canids: spondyloarthropy, Journal of Zoo Wildlife Medicine, 32: 58–64.

Roush, R. S., Burkhardt, R., Converse, L., Dreyfus, T. A., Garrison, C., Porter, T. A., Snowdon, C. T., and Ziegler, T. E. (1992) Comment on “Are alarming events good for captive monkeys?”, Applied Animal Behaviour Science, 33: 291–3 [DOI: 10.1016/S0168-1591(05)80018-8].

Rowland, D. L., Helgeson, V. S., and Cox, C. C. (1984) Temporal patterns of parturition in mammals in captivity, Chronobiologica, 11: 31–9.

Rushen, J. (1993) The “coping” hypothesis of stereotypic behaviour, Animal Behaviour, 45: 613–15 [DOI: 10.1006/anbe.1993.1071].

Rushen, J. (2003) Changing concepts of farm animal welfare: bridging the gap between applied and basic research, Applied Animal Behaviour Science [DOI: 10.1016/S0168-1591(02)00281-2], International Society for Applied Ethology Special Issue: A Selection of Papers from the ISAE International Congresses, 1999–2001, 81: 199–214.

Rushen, J. and Depassillé, A. M. B. (1992) The scientific assessment of the impact of housing on animal welfare: a critical review, Canadian Journal of Animal Science, 72: 721–43.

Russel, A. (1984) Body condition scoring of sheep, In Practice 6: 91–3.

Russow, L.-M. (2002) Ethical implications of the human–animal bond in the laboratory, ILAR Journal, 43: 33–7 [PubMed: 11752729].

Rutherford, K. (2002) Assessing pain in animals, Animal Welfare, 11: 31–53.

Ryan, S., Thompson, S., Roth, A., and Gold, K. (2002) Effects of hand-rearing on the reproductive success of western lowland gorillas in North America, Zoo Biology, 21: 389–401 [DOI: 10.1002/zoo.10045].

Ryder, O. A. (1986) Species conservation and systematics: the dilemma of subspecies, Trends in Ecology and Evolution, 1: 9–10 [DOI: 10.1016/0169-5347(86)90059-5].

Ryder, O. A. and Feistner, A. T. C. (1995) Research in zoos: a growth area in conservation, Biodiversity and Conservation, 4: 671–7 [DOI: 10.1007/BF00222522].

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Sainsbury, D. (1998) Animal Health (2nd edn), London: Blackwell Science.

Sales, G. D., Milligan, S. R., and Khirnykh, K. (1999) Sources of sound in the laboratory animal environment: a survey of the sounds produced by procedures and equipment, Animal Welfare, 8: 97–115.

Sambrook, T. D. and Buchanan-Smith, H. M. (1997) Control and complexity in novel object enrichment, Animal Welfare, 6: 207–16.

Sanderson, S. (2007) Appendix A: contraception in V. Melfi (ed.) Proceedings of the Eighth European Endangered Species Programme (EEP) Studbook for Sulawesi Crested Black Macaque (. Macaca nigra), Paignton Zoo Environmental Park, pp. 51–4.

Sanderson, S., Fidgett, A. L., and Fletcher, E. (2004) The effect of food presentation on the mortality rates and reproductive success of a colony of Rodrigues fruit bats (Pteropus rodricensis) in Proceedings of the European Association of Zoo and Wildlife Veterinarians Fifth Scientific Meeting, 1923 May, Ebeltoft: EAZWV, pp. 13–19.

Sannen, A., Van Elsacker, L., and Eens, M. (2004) Effect of spatial crowding on aggressive behaviour in a bonobo colony, Zoo Biology, 23: 383–95 [DOI: 10.1002/zoo.20024].

Saskia, J. and Schmid, H. (2002) Effect of feeding boxes on the behaviour of stereotyping Amur tigers (Panthera tigris altaica) in the Zurich Zoo, Zurich, Switzerland, Zoo Biology, 21: 573–84 [DOI: 10.1002/zoo.10061].

Savage, A., Rice, J. M., Brangan, J. M., Martini, D. P., Pugh, J. A., and Miller, C. D. (1994) Performance of African elephants (Loxodonta africana) and California sea lions (Zalophus californianus) on a two-choice object discrimination task, Zoo Biology, 13: 69–75 [DOI: 10.1002/zoo.1430130109].

Savastano, G., Hanson, A., and McCann, C. (2003) The development of an operant conditioning training program for New World primates at the Bronx Zoo, Journal of Applied Animal Welfare Science, 6: 247–61 [DOI: 10.1207/S15327604JAWS0603_09] [PubMed: 14612272].

Schaaf, C. (1984) Animal behaviour and the captive management of wild mammals: a personal view, Zoo Biology, 310: 373–7 [DOI: 10.1002/zoo.1430030411].

Schafer, E. H. (1968) Hunting parks and animal enclosures in Ancient China, Journal of the Economic and Social History of the Orient, 11: 318–43 [DOI: 10.2307/3596278].

Schaffer, N., Beehler, B., Jeyendran, R. S., and Balke, B. (1990) Methods of semen collection in an ambulatory greater one-horned rhinoceros (Rhinoceros unicornis), Zoo Biology, 9: 211–21 [DOI: 10.1002/zoo.1430090304].

Schaffner, C. M. and Smith, T. E. (2005) Familiarity may buffer the adverse effects of relocation on marmosets (Callithrix kuhlii): preliminary evidence, Zoo Biology, 24: 93–100 [DOI: 10.1002/zoo.20019].

Schapiro, S. J., Bloomsmith, M. A., Suarez, S. A., and Porter, L. M. (1997) A comparison of the effects of simple versus complex environmental enrichment on the behaviour of group-housed, subadult rhesus macaques, Animal Welfare, 6: 17–28.

Schapiro, S. J., Perlman, J. E., and Boudreau, B. A. (2001) Manipulating the affiliative interactions of group-housed rhesus macaques using positive reinforcement training techniques, American Journal of Primatology, 55: 137–49 [DOI: 10.1002/ajp.1047] [PubMed: 11746277].

Schapiro, S. J., Bloomsmith, M. A., and Laule, G. E. (2003) Positive reinforcement training as a technique to alter non-human primate behaviour: quantitative assessments of effectiveness, Journal of Applied Animal Welfare Science, 6: 175–87 [DOI: 10.1207/S15327604JAWS0603_03] [PubMed: 14612266].

Scharmann, C. and van Hooff, J. (1986) ‘Reproductive strategies of the orang-utan: new data and a reconsideration of existing sociosexual models’, International Journal of Primatology, 7: 265–87.

Schiml, P. A., Mendoza, S. P., Saltzman, W., Lyons, D. M., and Mason, W. A. (1996) Seasonality in squirrel monkeys (Saimiri sciureus): social facilitation by females, Physiology and Behavior, 60: 1105–13 [DOI: 10.1016/0031-9384(96)00134-5] [PubMed: 8884940].

Schmid, J., Heistermann, M., Gansloßer, U., and Hodges, J. K. (2001) Introduction of foreign female Asian elephants (Elephas maximus) into an existing group: behavioural reactions and changes in cortisol levels, Animal Welfare, 10: 357–72.

Schmidt-Nielsen, K. (1997) Animal Physiology: Adaptation and Environment, Cambridge: Cambridge University Press.

Schmitt, D. L. (2003) Proboscidea (Elephants) in M. E. Fowler and M. E. Miller (eds), Zoo and Wild Animal Medicine (5th edn), Philadelphia, PA: Elsevier (Saunders), pp. 541–50.

Schulte-Hostedde, A. I., Zinner, B., Millar, J. S., and Hickling, G. J. (2005) Restitution of mass-size residuals: validating body condition indices, Ecology, 86: 155–63 [DOI: 10.1890/04-0232].

Schwabe, C. W. (1984) Veterinary Medicine and Human Health (3rd edn), Baltimore, Md: Williams & Wilkins.

Schwaibold, U. and Pillay, N. (2001) Stereotypic behaviour is genetically transmitted in the African striped mouse Rhabdomys pumilio, Applied Animal Behaviour Science, 74: 273–80 [DOI: 10.1016/S0168-1591(01)00169-1].

Schwartzkopf-Genswein, K. S., Huisma, C., and McAllister, T. A. (1999) Validation of a radio frequency identification system for monitoring the feeding patterns of feedlot cattle, Livestock Production Science, 60: 27–31 [DOI: 10.1016/S0301-6226(99)00047-0].

Schwartzkopf-Genswein, K. S., Stookey, J. M., and Welford, R. (1997) Behavior of cattle during hot-iron and freeze branding and the effects on subsequent handling ease, Journal of Animal Science, 75: 2064–72 [PubMed: 9263052].

Schwitzer, C. and Kaumanns, W. (2001) Body weights of ruffed lemurs (Varecia variegata) in European zoos, with reference to the problem of obesity, Zoo Biology, 20: 261–9 [DOI: 10.1002/zoo.1026].

Scott, L., Pearce, P., Fairhall, S., Muggleton, N., and Smith, J. (2003) Training non-human primates to cooperate with scientific procedures in applied biomedical research, Journal of Applied Animal Welfare Science, 6: 199–207 [DOI: 10.1207/S15327604JAWS0603_05] [PubMed: 14612268].

Scruton, D. M. and Herbert, J. (1972) The reaction of groups of captive talapoin monkeys to the introduction of male and female strangers of the same species, Animal Behaviour, 20: 463–73 [DOI: 10.1016/S0003-3472(72)80010-1].

Seal, U. S. (1991) Life after extinction in J. H. W. Gipps (ed.) ‘Beyond captive breeding: re-introducing endangered animals to the wild’, Symposium of the Zoological Society of London, 62: 39–55.

Seebeck, J. and Booth, R. (1996) Eastern barred bandicoot recovery: the role of the veterinarian in the management of endangered species, Australian Veterinary Journal, 73: 81–3 [DOI: 10.1111/j.1751-0813.1996.tb09980.x] [PubMed: 8660217].

Segovia, G., Yague, A. G., Garcia-Verdugo, J. M., and Mora, F. (2006) Environmental enrichment promotes neurogenesis and changes the extracellular concentrations of glutamate and GABA in the hippocampus of aged rats, Brain Research Bulletin, 70: 8–14 [DOI: 10.1016/j.brainresbull.2005.11.005] [PubMed: 16750477].

Seidensticker, J. and Doherty, J. (1996) Integrating animal behaviour and exhibit design in D. Kleiman, M. Allen, K. Thompson, and S. Lumpkin (eds), Wild Mammals in Captivity, Chicago, IL: Chicago University Press, pp. 180–90.

Sellinger, R. L. and Ha, J. C. (2005) The effects of visitor density and intensity on the behaviour of two captive jaguars (Panthera onca), Journal of Applied Animal Welfare Science, 8: 233–44 [DOI: 10.1207/s15327604jaws0804_1] [PubMed: 16436028].

Seltzer, L. J. and Ziegler, T. E. (2007) Non-invasive measurement of small peptides in the common marmoset (Callithrix jacchus): a radiolabeled clearance study and endogenous excretion under varying conditions, Hormones and Behaviour, 51: 436–42 [DOI: 10.1016/j.yhbeh.2006.12.012].

Selye, H. (1973) The evolution of the stress concept, American Scientist, 61: 692–9 [PubMed: 4746051].

Semple, S. (2002) Analysis of research projects conducted in Federation collections to 2000, Federation Research Newsletter, 3: 3.

Seres, M., Aureli, F., and de Waal, F. B. M. (2001) Successful formation of a large chimpanzee group out of two preexisting subgroups, Zoo Biology, 20: 501–15 [DOI: 10.1002/zoo.10003].

Shackleton-Bailey, D. R. (ed. and trans.) (2004) Cicero, Epistulae ad Familiares Vol. 2, 47–43 BC, Cambridge Classical Texts and Commentaries No. 17, Cambridge: Cambridge University Press.

Shackley, M. (1996) Widlife Tourism, London: Routledge.

Shannon, G. (2005) The effects of sexual dimorphism on the movements and foraging ecology of the African elephant. unpublished PhD thesis, School of Biological and Conservation Sciences, Durban, University of KwaZulu-Natal.

Shepherdson, D. (1991) A wild time at the zoo: practical enrichment for zoo animals, Annual Conference of the American Association of Zoological Parks and Aquariums, San Diego, CA: AAZPA, pp. 413–20.

Shepherdson, D. (1994) The role of environmental enrichment in the captive breeding and reintroduction of endangered species in P. J. S. Olney, G. M. Mace, and A. T. C. Feistner (eds), Creative Conservation: Interactive Management of Wild and Captive Animals, London: Chapman & Hall, pp. 167–77.

Shepherdson, D. (1998) Second Nature: Environmental Enrichment for Captive Animals, Washington DC: Smithsonian Books.

Shepherdson, D. J., Carlstead, K. C., Mellen, J., and Seidensticker, J. (1993) The influence of food presentation on the behavior of small cats in confined environments, Zoo Biology, 12: 203–16 [DOI: 10.1002/zoo.1430120206].

Shepherdson, D., Carlstead, K. C., and Wielebnowski, N. (2004) Cross-institutional assessment of stress responses in zoo animals using longitudinal monitoring of faecal corticoids and behaviour, Animal Welfare, 13: 105–13.

Sheppard, C. (1995) Propagation of endangered birds in US institutions: how much space is there?, Zoo Biology, 14: 197–210 [DOI: 10.1002/zoo.1430140302].

Sheppard, C. and Dierenfeld, E. (2002) Iron storage disease in birds: speculation on etiology and implications for captive husbandry, Journal of Avian Medicine and Surgery, 16: 192–7 [DOI: 10.1647/1082-6742(2002)016[0192:ISDIBS]2.0.CO;2].

Sherrill, J., Spelman, L. H., Reidel, C. L., and Montali, R. J. (2000) Common cuttlefish (Sepia officinalis) mortality at the National Zoological Park: implications for clinical management, Journal of Zoo and Wildlife Medicine, 31: 523–31 [PubMed: 11428401].

Sherwin, C. (2001) Can invertebrates suffer? Or, how robust is argument-by-analogy?, Animal Welfare, 10: 103–18.

Shi, Y. and Yokoyama, S. (2003) Molecular analysis of the evolutionary significance of ultraviolet vision in vertebrates, Proceedings of the National Academy of Sciences USA, 100: 8308–13 [DOI: 10.1073/pnas.1532535100].

Shine, C., Shine, N., Shine, R., and Slip, D. (1988) Use of subcaudal scale anomalies as an aid in recognizing individual snakes, Herpetological Review, 19: 79.

Sibley, C. G. and Monroe, B. L. (1990) Distribution and Taxonomy of the Birds of the World, New Haven, CT/London: Yale University Press.

Sibley, C. G. and Monroe, B. L. (1993) Supplement to Distribution and Taxonomy of the Birds of the World, New Haven, CT/London: Yale University Press.

Signal, T. D. and Taylor, N. (2006) Attitudes to animals in the animal protection community compared to a normative community sample, Society and Animals, 14: 265–74 [DOI: 10.1163/156853006778149181].

Sigursdon, C. J. and Miller, M. W. (2003) Other animal prion diseases, British Medical Bulletin, 66: 199–212 [DOI: 10.1093/bmb/66.1.199].

Silk, J. (1989) Social behaviour in evolutionary perspective in B. Smuts, D. Cheney, R. Seyfarth, R. Wrangham, and T. Strusaker (eds), Primate Societies, Chicago, IL: Chicago University Press, pp. 318–29.

Silver, S. C., Ostro, L. E. T., Yeager, C. P., and Dierenfeld, E. S. (2000) Phytochemical and mineral components of foods consumed by black howler monkeys (Alouatta pigra) at two sites in Belize, Zoo Biology, 19: 95–109 [DOI: 10.1002/1098-2361(2000)19:2<95::AID-ZOO1>3.0.CO;2-D].

Simeone, A., Wilson, R. P., Knauf, G., Knauf, W., and Schützendübe, J. (2002) Effects of attached data-loggers on the activity budgets of captive Humboldt penguins, Zoo Biology, 21: 365–73 [DOI: 10.1002/zoo.10044].

Simmonds, M. P. (2006) Into the brains of whales, Applied Animal Behaviour Science, 100: 103–16 [DOI: 10.1016/j.applanim.2006.04.015].

Singer, P. (1990) Animal Liberation, Cambridge: Cambridge University Press.

Singer, P. and Regan, T. (1999) Animal Rights and Human Obligations, Upper Saddle River, NJ: Prentice Hall.

Skinner, B. (1938) The Behavior of Organisms: An Experimental Analysis, New York, NJ: Appleton-Century.

Sklan, D., Melamed, D., and Friedman, A. (1994) The effects of varying levels of dietary vitamin A on immune response in the chick, Poultry Science, 73: 843–7 [PubMed: 8072927].

Slocombe, K. E. and Zuberbühler, K. (2005) Functionally referential communication in a chimpanzee, Current Biology, 15: 1779–84 [DOI: 10.1016/j.cub.2005.08.068].

Smith, A., Lindburg, D. G., and Vehrencamp, S. (1989) Effect of food preparation on feeding behavior of lion-tailed macaques, Zoo Biology, 8: 57–65 [DOI: 10.1002/zoo.1430080108].

Smith, E. J., Partridge, J. C., Parsons, K. N., White, E. M., Cuthill, I. C., Bennett, A. T. D., and Church, S. C. (2002) Ultraviolet vision and mate choice in the guppy (Poecilia reticulata), Behavioral Ecology, 13: 11–19 [DOI: 10.1093/beheco/13.1.11].

Smith, S. (2006) Environmental enrichment plan for elasmobranchs at Shark Bay, Sea World, Gold Coast, Australia, Proceedings of the First Australasian Regional Environmental Enrichment Conference, The Royal Melbourne Zoological Gardens, Australia.

Smith, T. (2004) Zoo Research Guidelines: Monitoring Stress in Zoo Animals, London: BIAZA. Sneddon, I. A., Beattie, V. E., Dunne, L., and Neil, W. (2000) ‘The effect of environmental enrichment on learning in pigs’, Animal Welfare, 9: 373–83.

Sneddon, L. (2003) The evidence for pain in fish: the use of morphine as an analgesic, Applied Animal Behaviour Science, 83: 153–62 [DOI: 10.1016/S0168-1591(03)00113-8].

Sodhi, N. S., Bickford, D., Diesmos, A. C., Lee, T. M., Koh, L. P., Brook, B. W., Sekercloglu, C. H., and Bradshaw, C. J. A. (2008) Measuring the meltdown: drivers of global amphibian extinction and decline, Public Library of Science (PLoS) ONE, 3, e1636.

Soloman, N. G. and French, J. A. (2007) Cooperative Breeding in Mammals, Cambridge: Cambridge University Press.

Sommerfeld, R., Bauert, M., Hillmann, E., and Stauffacher, M. (2006) Feeding enrichment by self-operated food boxes for white-fronted lemurs (Eulemur fulvous albifrons) in the Masoala exhibit of the Zurich Zoo, Zoo Biology, 25: 145–54 [DOI: 10.1002/zoo.20082].

Soulé, M., Gilpin, M., Conway, W., and Foose, T. (1986) The millennium ark: how long a voyage, how many staterooms, how many passengers?, Zoo Biology, 5: 101–13 [DOI: 10.1002/zoo.1430050205].

Southwick, C. H. (1967) An experimental study of intragroup agonistic behaviour in rhesus monkeys (Macaca mulatta), Behaviour, 28: 182–209 [DOI: 10.1163/156853967X00235] [PubMed: 4959568].

Sowell, B. F., Bowman, J. G.P., Branine, M. E., and Hubbert, M. E. (1998) Radio frequency technology to measure feeding behavior and health of feedlot steers, Applied Animal Behaviour Science, 59: 277–84 [DOI: 10.1016/S0168-1591(98)00110-5].

Spalton, J. A., Brend, S. A., and Lawrence, M. W. (1999) Arabian oryx reintroduction in Oman: successes and setbacks, Oryx, 33: 168–75 [DOI: 10.1046/j.1365-3008.1999.00062.x].

Speakman, J. (2005) Review: body size, energy metabolism and lifespan, Journal of Experimental Biology, 218: 1717–30 [DOI: 10.1242/jeb.01556].

Spelman, L. H. (1999) Vermin control in M. E. Fowler and M. E. Miller (eds), Zoo and Wild Animal Medicine: Current Therapy (4th edn), Philadelphia, PA: Elsevier (Saunders), pp. 114–20.

Spelman L. H., Osborn K. G., and Anderson, M. P. (1989) Pathogenesis of hemosiderosis in lemurs: role of dietary iron, tannin, and ascorbic acid, Zoo Biology, 8: 239–51 [DOI: 10.1002/zoo.1430080305].

Spencer, W. and Spencer, J. (2006) Management Guideline Manual for Invertebrate Live Food Species, Amsterdam, The Netherlands: EAZA Terrestrial Invertebrate TAG.

Spinelli, J. and Markowitz, H. (1985) Prevention of cage-associated distress, Lab Animal, 14: 19–28.

Spinka, M. (2006) How important is natural behaviour in animal farming systems?, Applied Animal Behaviour Science, 100: 117–28 [DOI: 10.1016/j.applanim.2006.04.006].

Spotte, S. (1992) Captive Seawater Fishes: Science and Technology, New York, NY: John Wiley & Sons.

Spraker, T. R. (2003) Spongiform encephalopathy in M. E. Fowler and M. E. Miller (eds), Zoo and Wild Animal Medicine: Current Therapy (5th edn), Philadelphia, PA: Elsevier (Saunders), pp. 741–5.

Spring, S. E., Clifford, J. O., and Tomko, D. L. (1997) Effect of environmental enrichment devices on behaviors of single- and group-housed squirrel monkeys (Saimiri sciureus), Contemporary Topics in Laboratory Animal Science, 36: 72–5 [PubMed: 11541211].

Springer, M. S. and de Jong, W. W. (2001) Phylogenetics: which mammalian supertree to bark up?, Science, 291: 1709–11 [DOI: 10.1126/science.1059434] [PubMed: 11253193].

Stacey, P. B. and Koenig, W. D. (1990) Cooperative Breeding in Birds: Long-term Studies of Ecology and Behavior, Cambridge: Cambridge University Press.

Stanley, M. E. and Aspey, W. P. (1984) An ethometric analysis in a zoological garden: modification of ungulate behavior by the visual presence of a predator, Zoo Biology, 3: 89–109 [DOI: 10.1002/zoo.1430030202].

Stanley Price, M. R. (1991) A review of mammal reintroductions, and the role of the reintroduction specialist group of IUCN/SSC in J. H. W. Gipps (ed.), ‘Beyond captive breeding: re-introducing endangered animals to the wild’, Symposium of the Zoological Society of London, 62: 9–25.

Stanley Price, M. R. and Fa, J. E. (2007) Reintroductions from zoos: a conservation guiding light or a shooting star? in A. Zimmerman, M. Hatchwell, L. Dickie, and C. West (eds), Zoos in the 21st Century: Catalysts for Conservation?, Conservation Biology Series No. 15, Cambridge: Cambridge University Press, pp. 155–77.

Steele, K. M., Linn, M. J., Schoepp, R. J., Komar, N., Geisbert, T. W., Manduca, R. M., Calle, P. P., Raphael, B. L., Clippinger, T. L., Larsen, T., Smith, J., Lanciotti, R. S., Panella, N. A., and McNamara, T. S. (2000) Pathology of fatal West Nile virus infections in native and exotic birds during the 1999 outbreak in New York City, New York, Veterinary Pathology, 37: 208–24 [DOI: 10.1354/vp.37-3-208] [PubMed: 10810985].

Steiner, A. (2007) Foreword in A. Zimmerman, M. Hatchwell, L. A. Dickie, and C. West (eds), Zoos in the 21st Century, Cambridge: Cambridge University Press, pp. xi–xii.

Sterling, E., Lee. J., and Wood, T. (2007) Conservation education in zoos: an emphasis on behavioral change in A. Zimmerman, M. Hatchwell, L. Dickie, and C. West (eds), Zoos in the 21st Century: Catalysts for Conservation?, Conservation Biology Series No. 15, Cambridge: Cambridge University Press, pp. 37–50.

Sternicki, T., Szablewski, P., and Szwaczkowski, T. (2003) Inbreeding effects on lifetime in David’s deer (Elaphurus davidianus, Milne Edwards 1866) population, Journal of Applied Genetics, 44: 175–83 [PubMed: 12773795].

Stevens, C. E. and Hume, I. D. (1995) Comparative Physiology of the Vertebrate Digestive System (2nd edn), Cambridge: Cambridge University Press.

Stevens, E. F. (1991) Flamingo breeding: the role of group displays, Zoo Biology, 10: 53–63 [DOI: 10.1002/zoo.1430100107].

Stevens, E. F. and Pickett, C. (1994) Managing the social environments of flamingos for reproductive success, Zoo Biology, 13: 501–7 [DOI: 10.1002/zoo.1430130512].

Stevenson, M. (1983) The captive environment: its effect on exploratory and related behavioural responses in wild animals in J. Archer and L. Birke (eds) Exploration in Animals and Man, New York: Van Nostrand. Rheinhold, pp. 176–97.

Stevenson, M. (2005) Management Guidelines for the Welfare of Zoo Animals: Elephant, Report for the Federation of Zoological Gardens of Great Britain, London: FZG.

Stevenson, M. (2008) BIAZA Questionnaire: What It Is For and What It Achieves, London: BIAZA.

Stevenson, M. and Walter, O. (2002) Management Guidelines for the Welfare of Zoo Animals: Elephants (Loxodonta africana and Elephas maxismus), London: BIAZA. St Louis, V., Barlow, J., and Sweerts, J. (1989) ‘Toenail-clipping: a simple technique for marking individual nidicolous chicks’, Journal of Field Ornithology, 60: 211–15.

Stoinski, T. S., Beck, B., Bowman, M., and Lehnhardt, J. (1997) The Gateway zoo program: a recent initiative in golden lion tamarin reintroduction in J. Wallis (ed.), ‘Primate conservation: the role of zoological parks’, American Society of Primatologists, Special Topics in Primatology, 1: 29–41.

Stoinski, T. S., Lukas, K. E., and Maple, T. L. (1998) A survey of research in North American zoos and aquariums, Zoo Biology, 17: 167–80 [DOI: 10.1002/(SICI)1098-2361(1998)17:3<167::AID-ZOO2>3.0.CO;2-7].

Stoinski, T. S., Daniel, E., and Maple, T. L. (2000) A preliminary study of the behavioral effects of feeding enrichment on African elephants, Zoo Biology, 19: 485–93 [DOI: 10.1002/1098-2361(2000)19:6<485::AID-ZOO1>3.3.CO;2-X] [PubMed: 11180410].

Stoinski, T. S., Hoff, M. P., Lukas, K. E., and Maple, T. L. (2001) A preliminary behavioral comparison of two captive all-male gorilla groups, Zoo Biology, 20: 27–40 [DOI: 10.1002/zoo.1003] [PubMed: 11319778].

Stoinski, T. S., Allen, M. T., Bloomsmith, M. A., Forthman, D. L., and Maple, T. L. (2002) Educating zoo visitors about complex environmental issues: should we do it and how?, Curator, 45: 129–43.

Stolba, A. and Wood-Gush, D. (1984) The identification of behavioural key features and their incorporation into a housing design for pigs, Annales de Recherches Veterinaires, 15: 287–98 [PubMed: 6486700].

Stone, R. (2003) Foreword in W. Holt, A. Pickard, J. Rodger, and D. Wildt (eds), Reproductive Science and Integrated Conservation, Cambridge: Cambridge University Press, pp. xiii–xv.

Storms, T. N., Clyde, V. L., Munson, L., and Ramsay, E. C. (2003) Blastomycosis in non-domestic felids, Journal of Zoo and Wildlife Medicine, 34: 231–8 [PubMed: 14582783].

Straughan, R. (2003) Ethics, Morality and Crop Biotechnology, Report sponsored by the Biotechnology and Biological Sciences Research Council (BBSRC), available online at.

Strouhal, E. (1992) Life in Ancient Egypt, Cambridge: Cambridge University Press.

Stuart, S. N. (1991) Re-introductions: to what extent are they needed? in J. H. W. Gipps, (ed.), ‘Beyond captive breeding: re-introducing endangered animals to the wild’, Symposium of the Zoological Society of London, 62: 27–37.

Stuart, S. N., Chanson, J. S., Cox, N. A., Young, B. E., Rodrigues, A. S. L., Fischman, D. L., and Waller, R. W. (2004) Status and trends of amphibian declines and extinctions worldwide, Science, 306: 1783–6 [DOI: 10.1126/science.1103538] [PubMed: 15486254].

Sunquist, F. (1995) End of the ark?, International Wildlife, 25: 23–9.

Sutherland, W., Newton, I., and Green, R. (2004) Bird Ecology and Conservation: A Handbook of Techniques. Oxford: Oxford University Press.

Swain, D. L., Wilson, L. A., and Dickinson, J. (2003) Evaluation of an active transponder system to monitor spatial and temporal location of cattle within patches of a grazed sward, Applied Animal Behaviour Science, 84: 185–95 [DOI: 10.1016/j.applanim.2003.08.012].

Swaisgood, R. R. (2007) Current status and future directions of applied behavioral research for animal welfare and conservation, Applied Animal Behaviour Science, 102: 139–62 [DOI: 10.1016/j.applanim.2006.05.027].

Swaisgood, R. R. and Shepherdson, D. J. (2005) Scientific approaches to enrichment and stereotypies in zoo animals: what’s been done and where should we go next?, Zoo Biology, 24: 499–518 [DOI: 10.1002/zoo.20066].

Swaisgood, R. R. and Shepherdson, D. J. (2006) Environmental enrichment as a strategy for mitigating stereotypies in zoo animals: a literature review and metal-analysis in G. J. Mason and J. Rushen (eds), Stereotypic Animal Behaviour: Fundamentals and Applications to Welfare, Wallingford: CABI Publishing, pp. 256–85.

Swaisgood, R. R., White, A. M., Zhou, X. P., Zhang, H. M., Zhang, G. Q., Wei, R. P., Hare, V. J., Tepper, E. M., and Lindburg, D. G. (2001) A quantitative assessment of the efficacy of an environmental enrichment programme for giant pandas, Animal Behaviour, 61: 447–57 [DOI: 10.1006/anbe.2000.1610].

Swan, G., Naidoo, V., Cuthbert, R., Green, R. E., Pain, D. J., Swarup, D., Prakash, V., Taggart, M., Bekker, L., Das, D., Diekmann, D., Diekmann, M., Killian, E., Mehar, G., Chandra Patra, R., Saini, M., and Wolter, K. (2006) Removing the threat of diclofenac to critically endangered Asian vultures, Public Library of Science (PLoS) Biology. 4: e66.

Swanson, W. F., Johnson, W. E., Cambre, R. C., Citino, S. B., Quigley, K. B., Brousset, D. M., Morais, R. N., Moreira, N., O’Brien, S. J., and Wildt, D. E.. (2003) Reproductive status of endemic felid species in Latin American zoos and implications for ex situ conservation, Zoo Biology, 22: 421–41 [DOI: 10.1002/zoo.10093].

Swenson, J., Wallin, K., Ericsson, G., Cederlund, G., and Sandegren, F. (1999) Effects of ear-tagging with radiotransmitters on survival of moose calves, Journal of Wildlife Management, 63: 354–8 [DOI: 10.2307/3802519].

Sykes, J. B. (ed.). (1977) Concise Oxford Dictionary of Current English (6th edn), Oxford: Oxford University Press.

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Taber, A. and Macdonald, D. W. (1992) Spatial organisation and monogamy in the mara, Dolichotis patagonum, Journal of Zoology, 227: 417–38.

Taberlet, T. and Bouvet, J. (1991) A single plucked feather as a source of DNA for bird genetic studies, Auk, 108: 959–60.

Tarou, L. R., Bashaw, M. J., and Maple, T. L. (2000) Social attachment in giraffe: response to social separation, Zoo Biology, 19: 41–51 [DOI: 10.1002/(SICI)1098-2361(2000)19:1<41::AID-ZOO5>3.0.CO;2-J].

Tarou, L. R., Bashaw, M. J., and Maple, T. L. (2003) Failure of a chemical spray to significantly reduce stereotypic licking in a captive giraffe, Zoo Biology, 22: 601–7 [DOI: 10.1002/zoo.10114].

Tarou, L. R., Kuhar, C. W., Adcock, D., Bloomsmith, M. A., and Maple, T. L. (2004) Computer-assisted enrichment for zoo-housed orang-utans (Pongo pygmaeus), Animal Welfare, 13: 445–53.

Taylor, A. C. (2003) Assessing the consequences of inbreeding for population fitness: past challenges and future prospects in W. Holt, A. Pickard, J. Rodger, and D. Wildt (eds) Reproductive Science and Integrated Conservation, Cambridge: Cambridge University Press, pp. 67–81.

Taylor J. J. (1984) Iron accumulation in avian species in captivity, Dodo: Journal of the Jersey Wildlife Preservation Trust, 21: 126–31.

Terranova, C. J. and Coffman, B. S. (1997) Body weights of wild and captive lemurs, Zoo Biology, 16: 17–30 [DOI: 10.1002/(SICI)1098-2361(1997)16:1<17::AID-ZOO4>3.3.CO;2-J].

Testa, J. W. and Rothery, P. (1992) Effectiveness of various cattle ear tags as markers for Weddell seals, Marine Mammal Science, 8: 344–53 [DOI: 10.1111/j.1748-7692.1992.tb00050.x].

Thiermann, A. and Babcock, S. (2005) Animal welfare and international trade, Science and Technology Review, 24: 747–55.

Thodberg, K., Jensen, K. H., Herskin, M. S., and Jorgensen, E. (1999) Influence of environmental stimuli on nest building and farrowing behaviour in domestic sows, Applied Animal Behaviour Science, 63: 131–44 [DOI: 10.1016/S0168-1591(99)00002-7].

Thomas, C. D., Cameron, A., Green, R. E., Bakkenes, M., Beaumont, L. J., Collingham, Y. C., Erasmus, B. F. N., Ferreira de Siqueira, M., Grainger, A., Hannah, L., Hughes, L., Huntley, B., van Jaarsveld, A. S., Midgley, G. F., Miles, L., Ortega-Huerta, M. A., Peterson, A. T., Phillips, O. L., and Williams, S. E. (2004) Extinction risk from climate change, Nature, 427: 145–8 [DOI: 10.1038/nature02121].

Thomas, L. W., Kline, C., Duffelmeyer, J., Maclaughlin, K., and Doherty, J. G. (1986) The hand-rearing and social reintegration of a Californian sealion, International Zoo Yearbook, 24: 279–85 [DOI: 10.1111/j.1748-1090.1985.tb02555.x].

Thomas, P. R. and Powell, D. M. (2006) Birth and simultaneous rearing of two litters in a pack of captive African wild dogs (Lycaon pictus), Zoo Biology, 25: 461–77 [DOI: 10.1002/zoo.20111].

Thomas, R. (2005) Internal drive vs external directive: the delivery of conservation through zoo-based research—a response to Rees, Oryx, 39: 134 [DOI: 10.1017/S0030605305000359].

Thomas, R., Bartlett, L., Marples, N., Kelly, D., and Cuthill, I. (2004) Prey selection by wild birds can allow novel and conspicuous colobus morphs to spread in prey populations, Oikos, 106: 285–94 [DOI: 10.1111/j.0030-1299.2004.13089.x].

Thomas, W. and Maruska, E. (1996) Mixed-species exhibits with mammals in D. Kleiman, M. Allen, K. Thompson, and S. Lumpkin (eds), Wild Mammals in Captivity: Principles and Techniques, Chicago, IL: University of Chicago, pp. 204–11.

Thompson, C. B., Holter, J. B., Hayes, H. H., Silver, H., and Urban, W. E. (1973) Nutrition of white-tailed deer I: energy requirements of fawns, The Journal of Wildlife Management, 37: 301–11 [DOI: 10.2307/3800120].

Thompson, K., Roberts, M., and Rall, W. (1995) Factors affecting pair compatibility in captive kangaroo rats, Dipodomys heermanni, Zoo Biology, 14: 317–30 [DOI: 10.1002/zoo.1430140404].

Tinbergen, N. (1963) On aims and methods of ethology, Zeitschrift für Tierpsychologie, 20: 410–33.

Todman, J. B. and Dugard, P. (2001) Single-Case and Small-n Experimental Designs, Mahwah, NJ: Lawrence Erlbaum Associates.

Tofield, S., Coll, R. K., Vyle, B., and Bolstad, R. (2003) Zoos as a source of free choice learning, Research in Science and Technological Education, 21: 67–99 [DOI: 10.1080/02635140308342].

Toone, W. D. and Wallace, M. P. (1994) The extinction in the wild and reintroduction of the California condor (Gymnogyps californianus) in P. J. S. Olney, G. M. Mace, and A. T. C. Feistner (eds) Creative Conservation: Interactive Management of Wild and Captive Animals, London: Chapman & Hall, pp. 411–19.

Travis, D. (2007) West Nile virus in birds and mammals in M. E. Fowler and R. E. Miller (eds), Zoo and Wild Animal Medicine (6th edn), St Louis, MO: Saunders (Elsevier), pp. 2–9.

Traylor-Holzer, K. and Fritz, P. (1985) Utilization of space by adult and juvenile groups of captive chimpanzees (Pan troglodytes), Zoo Biology, 4: 115–27 [DOI: 10.1002/zoo.1430040205].

Tribe, A. and Booth, R. (2003) Assessing the role of zoos in wildlife conservation, Human Dimensions of Wildlife, 8: 65–74 [DOI: 10.1080/10871200390180163].

Trivers, R. L. (1971) The evolution of reciprocal altruism, Quarterly Review of Biology, 46: 35–57 [DOI: 10.1086/406755].

Trivers, R. L. (1972) Parental investment and sexual selection in B. Campbell (ed.), Sexual Selection and the Descent of Man, Chicago, IL: Aldine, pp. 35–57.

Troyer, K. (1984a) Diet selection and digestion in Iguana iguana: the importance of age and nutrient requirements, Oecologia, 61: 201–7 [DOI: 10.1007/BF00396761].

Troyer, K. (1984b) Behavioral acquisition of the hindgut fermentation system by hatchling Iguana iguana, Behavioral Ecology and Sociobiology, 14: 189–93 [DOI: 10.1007/BF00299618].

Tudge, C. (1992) Last Animals at the Zoo: How Mass Extinction Can Be Stopped, Washington DC/London: Island Press/Hutchinson Radius.

Tunnicliffe, S. D., Lucas, A. M., and Osborne, J. (1997) School visits to zoos and museums: a missed educational opportunity?, International Journal of Science Education, 19: 1039–56 [DOI: 10.1080/0950069970190904].

Turley, S. K. (1999) Exploring the future of the traditional UK zoo, Journal of Vacation Marketing, 5: 340–55 [DOI: 10.1177/135676679900500404].

Tyler, S. (1979) Time sampling: a matter of convention, Animal Behaviour, 27: 801–10 [DOI: 10.1016/0003-3472(79)90016-2].

Back to top

Ullrey, D. E. (2003) Metabolic bone diseases in M. E. Fowler and R. E. Miller (eds), Zoo and Wild Animal Medicine (5th edn), Philadelphia, PA: Elsevier (Saunders), pp. 749–56.

UN (United Nations). (1973) Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), Washington DC: UNEP.

UN (United Nations). (1992) Convention on Biodiversity (CBD), International Environmental Laws: Multilateral Treaties, 992: 1–43.

Back to top

Valutis, L. L. and Marzuluff, J. M. (1999) The appropriateness of puppet-rearing birds for reintroduction, Conservation Biology, 13: 584–91 [DOI: 10.1046/j.1523-1739.1999.97443.x].

Van der Berg, L., van der Borg, J., and van der Meer, J. (1995) Urban Tourism: Performance and Strategies in Eight European Cities, Aldershot: Ashgate Publishing.

Van Gelder, R. (1991) A big pain, Natural History, 100: 22–7.

Van Hoek, C. S. and King, C. E. (1997) Causation and influence of environmental enrichment on feather picking of the crimson-bellied conure (Pyrrhura perlata perlata), Zoo Biology, 16: 161–72 [DOI: 10.1002/(SICI)1098-2361(1997)16:2<161::AID-ZOO6>3.0.CO;2-8].

Van Keulen-Kromhout, G. (1978) Zoo enclosures for bears: their influence on captive behaviour and reproduction, International Zoo Yearbook, 18: 177–86 [DOI: 10.1111/j.1748-1090.1978.tb00254.x].

Van Linge, J. (1992) How to out-zoo the zoo, Tourism Management, 13: 114–17 [DOI: 10.1016/0261-5177(92)90045-9].

Van Oers, K., Drent, P. J., de Goede, P., and van Noordwijk, A. J. (2004) Realized heritability and repeatability of risk-taking behaviour in relation to avian personalities, Proceedings of the Royal Society Series B: Biological Sciences, 271: 65–73 [DOI: 10.1098/rspb.2003.2518].

Van Praag, H., Kempermann, G., and Gage, F. H. (2000) Neural consequences of environmental enrichment, Nature Reviews [DOI: 10.1038/35044558]. Neuroscience, 1: 191–8 [DOI: 10.1038/35044558].

Vargas-Ashby, H. and Pankhurst, S. (2007) Effects of feeding enrichment on the behaviour and welfare of captive Waldrapps (Northern bald ibis Geronticus eremita), Animal Welfare, 16: 369–74.

Vasey, N. and Tattersall, I. (2002) Do ruffed lemurs form a hybrid zone? Distribution and discovery of Varecia, with systematic and conservation implications, American Museum Novitates, 3376: 1–26 [DOI: 10.1206/0003-0082(2002)376<0001:DRLFAH>2.0.CO;2].

Veasey, J. (2006) Concepts in the care and welfare of captive elephants, International Zoo Yearbook, 40: 63–79 [DOI: 10.1111/j.1748-1090.2006.00063.x].

Veasey, J. S., Waran, N. K., and Young, R. J. (1996a) On comparing the behaviour of zoo-housed animals with wild conspecifics as a welfare indicator, Animal Welfare, 5: 13–24.

Veasey, J. S., Waran, N. K., and Young, R. J. (1996b) On comparing the behaviour of zoo housed animals with wild conspecifics as a welfare indicator, using the giraffe (Giraffa camelopardalis) as a model, Animal Welfare, 5: 139–53.

Vehrs, K. L. (1996) Summary of United States wildlife regulations applicable to zoos in D. G. Kleiman, M. E. Allen, K. V. Thompson, and S. Lumpkin (eds), Wild Mammals in Captivity: Principles and Techniques, Chicago/London: University of Chicago Press, pp. 593–9.

Veltman, K. and van der Zanden, R. (2000) Biological control: fighting pests with pests. De Harpij. 19: 5–7 (in Dutch with English summary).

Verderber, S., Gardner, L., Islam, D., and Nakanishi, L. (1988) Elderly persons’ appraisal of the zoological environment, Environment and Behavior, 20: 492–507 [DOI: 10.1177/0013916588204007].

Vevers, G. (1976) London’s Zoo, London: Bodley Head.

Vickery, S. and Mason, G. (2004) Stereotypic behavior in Asiatic black and Malayan sun bears, Zoo Biology, 23: 409–30 [DOI: 10.1002/zoo.20027].

Vickery, S. S. and Mason, G. J. (2005) Stereotypy and perseverative responding in caged bears: further data and analyses, Applied Animal Behaviour Science, 91: 247–60 [DOI: 10.1016/j.applanim.2005.01.005].

Vié, J. C. (1996) Reproductive biology of captive Arabian oryx Oryx leucoryx in Saudi Arabia, Zoo Biology, 15: 371–81 [DOI: 10.1002/(SICI)1098-2361(1996)15:4<371::AID-ZOO2>3.3.CO;2-P].

Vignes, S., Newman, J. D., and Roberts, R. L. (2001) Mealworm feeders as environmental enrichment for common marmosets, Contemporary Topics in Laboratory Animal Science, 40(3): 26–9 [PubMed: 11353521].

Vining, J. (2003) The connection to other animals and caring for nature, Research in Human Ecology, 10(2): 87–99.

Visalberghi, E. and Anderson, J. (1993) Reasons and risks associated with manipulating captive primates’ social environments, Animal Welfare, 212: 3–15.

Visalberghi, E. and Vitale, A. F. (1990) Coated nuts as an enrichment device to elicit tool use in tufted capuchins (Cebus apella), Zoo Biology, 9: 65–71 [DOI: 10.1002/zoo.1430090108].

Vogelnest, L. and Ralph, H. K. (1997) Chemical immobilisation of giraffe to facilitate short procedures, Australian Veterinary Journal, 75: 180–2 [DOI: 10.1111/j.1751-0813.1997.tb10061.x] [PubMed: 9088507].

Voipio, H. M., Nevalainen, T., Halonen, P., Hakumaki, M., and Bjork, E. (2006) Role of cage material, working style and hearing sensitivity in perception of animal care noise, Laboratory Animals, 40: 400–9 [DOI: 10.1258/002367706778476334] [PubMed: 17018211].

Vonk, J. and MacDonald, S. E. (2002) Natural concepts in a juvenile gorilla (Gorilla gorilla gorilla) at three levels of abstraction, Journal of the Experimental Analysis of Behaviour, 78: 315–32 [DOI: 10.1901/jeab.2002.78-315].

Back to top

Waiblinger, S., Boivin, X., Pedersen, V., Tosi, M-.V., Janczak, A. M., Visser, E. K., and Jones, R. B. (2006) ‘Assessing the human–animal relationship in farmed species: a critical review’, Applied Animal Behaviour Science, 101: 185–242.

Waits, L. P., Talbot, S. L., Ward, R. H., and Shields, G. F. (1998) Mitochondrial DNA phylogeography of the North American brown bear and implications for conservation, Conservation Biology, 12: 408–17 [DOI: 10.1046/j.1523-1739.1998.96351.x].

Waitt, C. and Buchanan-Smith, H. M. (2001) What time is feeding? How delays and anticipation of feeding schedules affect stump-tailed macaque behaviour, Applied Animal Behaviour Science, 75: 75–85 [DOI: 10.1016/S0168-1591(01)00174-5].

Waitt, C., Buchanan-Smith, H. M., and Morris, K. (2002) The effects of caretaker–primate relationships on primates in the laboratory, Journal of Applied Animal Welfare Science, 5: 309–19 [DOI: 10.1207/S15327604JAWS0504_05] [PubMed: 16221081].

Walker, S. (2001) Africa: national legislation and licensing in C. E. Bell (ed.), Encyclopedia of the World’s Zoos, Chicago, IL/London: Fitzroy Dearborn Publishers, pp. 14–15.

Ward, P. I., Mosberger, N., Kistler, C., and Fischer, O. (1998) The relationship between popularity and body size in zoo animals, Conservation Biology, 12: 1408–11 [DOI: 10.1046/j.1523-1739.1998.97402.x].

Ward, S. and Melfi, V. (2004) The influence of stockmanship on the behaviour of black rhinoceros (Diceros bicornis) in C. Macdonald (ed.), Proceedings of the Sixth Annual Symposium on Zoo Research, 8–9 July, Edinburgh: BIAZA, pp. 160–9.

Wardzynski, C., Arne, P., and Millemann, Y. (2005) Methods of restraint for zoo mammals, Point Veterinaire, 36: 46.

Warwick, C. (1990) Reptilian ethology in captivity: observations of some problems and an evaluation of their aetiology, Applied Animal Behaviour Science, 26: 1–13 [DOI: 10.1016/0168-1591(90)90082-O].

Washio, K., Misawa, S., and Ueda, S. (1989) Individual identification of non-human primates using DNA fingerprinting, Primate 30: 217–21 [DOI: 10.1007/BF02381306].

Wasser, S. K., Hunt, K. E., Brown, J. L., Cooper, K., Crockett, C. M., Bechert, U., Millspaugh, J. J., Larson, S., and Monfort, S. L. (2000) A generalized fecal glucocorticoid assay for use in a diverse array of non-domestic mammalian and avian species, General and Comparative Endocrinology, 120: 260–75 [DOI: 10.1006/gcen.2000.7557] [PubMed: 11121291].

Wasserman, F. E. and Cruikshank, W. W. (1983) The relationship between time of feeding and aggression in a group of captive hamadryas baboons, Primate 24: 432–5 [DOI: 10.1007/BF02381988].

Waterhouse, M. and Waterhouse, H. (1971) Population density and stress in zoo monkeys, The Ecologist, 1: 19–21.

Wathes, C. and Charles, D. (eds). (1994) Livestock Housing, Wallingford, Oxon: CABI Publishing.

Watson, J. B. (1928) The Psychological Care of Infant and Child, London: Allen Press.

Watson, P. F. and Holt, W. V. (2001) Organizational issues concerning the establishment of a genetic resource bank, in P. F. Watson and W. Holt (eds), Cryobanking the Genetic Resource: Wildlife Conservation for the Future?, London: Taylor & Francis, pp. 113–22.

Watters, J. V. and Meehan, C. L. (2007) Different strokes: can managing behavioral types increase post-release success?, Applied Animal Behaviour Science, 102: 364–79 [DOI: 10.1016/j.applanim.2006.05.036].

Watts, J. M. and Stookey, J. M. (1999) Effects of restraint and branding on rates and acoustic parameters of vocalization in beef cattle, Applied Animal Behaviour Science, 62: 125–35 [DOI: 10.1016/S0168-1591(98)00222-6].

Watts, P. C., Buley, K. R., Sanderson, S., Boardman, W., Ciofi, C., and Gibson, R. (2006) Parthenogenesis in Komodo dragons, Nature, 444: 1021–2 [DOI: 10.1038/4441021a] [PubMed: 17183308].

Wayne, R. K., Bruford, M. W., Girman, D., Rebholz, W. E. R., Sunnucks, P., and Taylor, A. C. (1994) Molecular genetics of endangered species in P. J. S. Olney, G. M. Mace, and A. T. C. Feistner (eds), Creative Conservation: Interactive Management of Wild and Captive Animals, London: Chapman & Hall, pp. 92–117.

WAZA (World Association of Zoos and Aquariums) (1999) Code of Ethics, Liebefeld-Berne: WAZA.

WAZA (World Association of Zoos and Aquariums) (2005) Building a Future for Wildlife: The World Zoo and Aquarium Conservation Strategy, Berne: WAZA.

WAZA (World Association of Zoos and Aquariums) (2006) Understanding Animals and Protecting Them: About the World Zoo and Aquarium Strategy, Liebefeld-Berne: WAZA.

WAZA (World Association of Zoos and Aquariums) (2008) ‘About WAZA’, available online at

Weary, D. M., Niel, L., Flower, F. C., and Fraser, D. (2006) Identifying and preventing pain in animals, Applied Animal Behaviour Science, 100: 64–76 [DOI: 10.1016/j.applanim.2006.04.013].

Webster, J. (1994) Animal Welfare: A Cool Eye Towards Eden, Oxford: Blackwell Science.

Webster, J. (2006) Animal sentience and animal welfare: what is it to them and what is it to us?, Applied Animal Behaviour Science, 100: 1–3 [DOI: 10.1016/j.applanim.2006.05.012].

Wechsler, B. (1991) Stereotypies in polar bears, Zoo Biology, 10: 177–88 [DOI: 10.1002/zoo.1430100209].

Wehnelt, S. and Wilkinson, R. (2005) Research, conservation and zoos: the EC Zoos Directive—a response to Rees, Oryx, 39: 132–3 [DOI: 10.1017/S0030605305000347].

Wehnelt, S., Hosie, C., Plowman, A., and Feistner, A. (2003) Zoo Research Guidelines: Project Planning and Behavioural Observations, London: BIAZA.

Wehnelt, S., Bird, S., and Lenihan, A. (2006) Chimpanzee forest exhibit at Chester Zoo, International Zoo Yearbook, 40: 313–22 [DOI: 10.1111/j.1748-1090.2006.00313.x].

Wei, F., Feng, Z., Wang, Z., Zhou, A. and Hu, J. (1999) Use of the nutrients in bamboo by the red panda (Ailurus fulgens), Journal of Zoology, 248: 535–41 [DOI: 10.1111/j.1469-7998.1999.tb01053.x].

Weipkema, P. and Koolhaas, J. (1993) Stress and animal welfare, Animal Welfare, 26: 195–218.

Weiss, E. and Wilson, S. (2003) The use of classical and operant conditioning in training Aldabra tortoises (Geochelone gigantea) for venipuncture and other husbandry issues, Journal of Applied Animal Welfare Science, 6: 33–8 [DOI: 10.1207/S15327604JAWS0601_03] [PubMed: 12795857].

Weller, S. H. and Bennett, C. L. (2001) Twenty-four hour activity budgets and patterns of behavior in captive ocelots (Leopardus pardalis), Applied Animal Behaviour Science, 71: 67–79 [DOI: 10.1016/S0168-1591(00)00169-6] [PubMed: 11179560].

Wells, D. L. (2005) A note on the influence of visitors on the behaviour and welfare of zoo-housed gorillas, Applied Animal Behaviour Science, 93: 13–17.

Wells, D. L. and Egli, J. M. (2004) The influence of olfactory enrichment on the behaviour of captive black-footed cats, Felis nigripes, Applied Animal Behaviour Science, 85: 107–19 [DOI: 10.1016/j.applanim.2003.08.013].

Wemelsfelder, F. (1999) The problem of animal subjectivity and its consequences for the scientific measurement of animal suffering in F. Dolins (ed.), Attitudes to Animals: Views in Animal Welfare, Cambridge: Cambridge University Press, pp. 37–53.

Wemelsfelder, F. and Birke, L. (1997) Environmental challenge in M. C. Appleby and B. O. Hughes (eds) Animal Welfare, Wallingford, Oxon: CABI Publishing, pp. 35–47.

Wendeln, M. C., Runkle, J. R., and Kalko, E. K. V. (2000) Nutritional values of 14 fig species and bat feeding preferences in Panama, Biotropica, 32: 489–501 [DOI: 10.1111/j.1744-7429.2000.tb00495.x].

Westneat, D. F. and Stewart, I. R. K. (2003) Extra-pair paternity in birds: causes, correlates, and conflict, Annual Review of Ecology, Evolution, and Systematics, 34: 365–96 [DOI: 10.1146/annurev.ecolsys.34.011802.132439].

Wharton, D. (2007) Research by zoos in A. Zimmerman, M. Hatchwell, L. A. Dickie, and C. West (eds), Zoos in the 21st Century, Cambridge: Cambridge University Press, pp. 178–91.

Wheater, R. (1995) World Zoo Conservation Strategy: a blueprint for zoo development, Biodiversity and Conservation, 4: 544–52 [DOI: 10.1007/BF00222513].

Wheler, C. L. and Fa, J. E. (1995) Enclosure utilization and activity of round island geckos (Phelsuma guentheri), Zoo Biology, 14: 361–9 [DOI: 10.1002/zoo.1430140407].

Whitaker, B. R. (1999) Preventive medicine programs for fish in M. E. Fowler and R. E. Miller (eds), Zoo and Wild Animal Medicine: Current Therapy (4th edn), Philadelphia, PA: W. B. Saunders, pp. 163–81.

White, B. C., Houser, L. A., Fuller, J. A., Taylor, S., and Elliott, J. L. L. (2003) Activity-based exhibition of five mammalian species: evaluation of behavioral changes, Zoo Biology, 22: 269–85 [DOI: 10.1002/zoo.10085].

White, P. A. (2005) Maternal rank is not correlated with cub survival in the spotted hyena, Crocuta crocuta, Behavioral Ecology, 16: 606–13 [DOI: 10.1093/beheco/ari033].

Whitehead, G. K. (1972) Deer of the World, London: Constable.

Whitehead, M. (1995) Saying it with genes, species and habitats: biodiversity education and the role of zoos, Biodiversity and Conservation, 4: 664–70 [DOI: 10.1007/BF00222521].

Whiten, A., Goodall, J., McGrew, W. C., Nishida, T., Reynolds, V., Sugiyama, Y., Tutin, C. E. G., Wrangham, R. W., and Boesch, C. B. (1999) Chimpanzee cultures, Nature, 399: 682–5 [DOI: 10.1038/21415] [PubMed: 10385119].

Whitford, H. L. and Young, R. J. (2004) Trends in the captive breeding of threatened and endangered birds in British zoos, 1988–1997, Zoo Biology, 23: 85–9 [DOI: 10.1002/zoo.10122].

Whiting, M. J., Stuart-Fox, D. M., O’Connor, D., Firth, D., Bennett, N. C., and Blomberg, S. P. (2006) Ultraviolet signals ultra-aggression in a lizard, Animal Behaviour, 72: 353–63 [DOI: 10.1016/j.anbehav.2005.10.018].

Whitney, R. and Wickings, E. (1987) Macaques and other old world simians in T. Poole (ed.), The UFAW Handbook on the Care and Management of Laboratory Animals, New York, NY: Churchill Livingston, pp. 599–627.

Wielebnowski, N. (1996) Reassessing the relationship between juvenile mortality and genetic monomorphism in captive cheetahs, Zoo Biology, 15: 353–69 [DOI: 10.1002/(SICI)1098-2361(1996)15:4<353::AID-ZOO1>3.0.CO;2-A].

Wielebnowski, N. (1998) Contributions of behavioral studies to captive management and breeding of rare and endangered mammals in T. Caro (ed.), Behavioral Ecology and Conservation Biology, New York, NY/London: Oxford University Press, pp. 130–62.

Wielebnowski, N. (1999) Behavioral differences as predictors of breeding status in captive cheetahs, Zoo Biology, 18: 335–49 [DOI: 10.1002/(SICI)1098-2361(1999)18:4<335::AID-ZOO8>3.0.CO;2-X].

Wielebnowski, N., Fletchall, N., Carlstead, K., Busso, J., and Brown, J. (2002) Non-invasive assessment of adrenal activity associated with husbandry and behavioral factors in the North American clouded leopard population, Zoo Biology, 21: 77–98 [DOI: 10.1002/zoo.10005].

Wiese, R., Willis, K., Lacy, R., and Ballou, J. (2003) AZA Studbook Analysis and Population Management Handbook, Bethesda, MD: AZA.

Wiesner, C. S. and Iben, C. (2003) Influence of environmental humidity and dietary protein on pyramidal growth of carapaces in African spurred tortoises (Geochelone sulcata), Journal of Animal Physiology and Animal Nutrition, 87: 66–74 [DOI: 10.1046/j.1439-0396.2003.00411.x] [PubMed: 14511150].

Wiggs, R. B. and Lobprise, H. B. (1997) Exotic animal oral disease and dentistry in R. B. Wiggs and H. B. Lobprise (eds), Veterinary Dentistry: Principles and Practice, Oxford: Blackwell Publishing, pp. 538–58.

Wilcken, J. and Lees, C. (1998) Managing Zoo Populations: Compiling and Analysing Studbook Data, Sydney: ARAZPA.

Wildt, D., Ellis, S., Janssens, D., and Buff, J. (2003) Toward more efficient reproductive science for conservation in W. Holt, A. Pickard, J. Rodger, and D. Wildt (eds), Reproductive Science and Integrated Conservation, Cambridge: Cambridge University Press, pp. 2–20.

Wilkinson, R. (2000) An overview of captive-management programmes and regional collection planning for parrots, International Zoo Yearbook, 37: 36–58 [DOI: 10.1111/j.1748-1090.2000.tb00705.x].

Williams, E. S. (2003) Plague in M. E. Fowler (ed.), Zoo and Wild Animal Medicine (3rd edn), Philadelphia, PA: Elsevier (Saunders), pp. 705–9.

Williams, E. S., Yuill, T., Artois, M., Fischer, J., and Haigh, J. A. (2002) Emerging infectious diseases in wildlife, OEI Scientific and Technical Review, 21: 139–57.

Williams, L. E. and Abee, C. R. (1988) Aggression with mixed age-sex groups of Bolivian squirrel monkeys following single animal introductions and new group formations, Zoo Biology, 7: 139–45 [DOI: 10.1002/zoo.1430070207].

Willmer, P., Stone, G., and Johnston, I. (2000) Environmental Physiology of Animals, Oxford: Blackwell Science.

Wilson, A. C. and Stanley Price, M. R. (1994) Reintroduction as a reason for captive breeding in P. J. S. Olney, G. M. Mace, and A. T. C. Feistner (eds), Creative Conservation: Interactive Management of Wild and Captive Animals, London: Chapman & Hall, pp. 243–64.

Wilson, D. E. and Reader, D. M. (eds). (2005) Mammal Species of the World, Baltimore, MD/London: John Hopkins University Press.

Wilson, E. O. (1975) Sociobiology: The New Synthesis, Cambridge, MA: Belknap Publishing.

Wilson, E. O. (1984) Biophilia, Cambridge, MA: Harvard University Publishing.

Wilson, E. O. (ed.). (1988) BioDiversity, Washington DC: National Academy.

Wilson, M., Kelling, A., Poline, L., Bloomsmith, M., and Maple, T. (2003) Post-occupancy evaluation of Zoo Atlanta’s Giant Panda Conservation Center: staff and visitor reactions, Zoo Biology, 22: 365–82 [DOI: 10.1002/zoo.10102].

Wilson, M. L., Bloomsmith, M. A., and Maple, T. L. (2004) Stereotypic swaying and serum cortisol concentrations in three captive African elephants (Loxodonta africana), Animal Welfare, 13: 39–43.

Wilson, S. C., Mitlohner, F. M., Morrow-Tesch, J., Dailey, J. W., and McGlone, J. J. (2002) An assessment of several potential enrichment devices for feedlot cattle, Applied Animal Behaviour Science, 76: 259–65 [DOI: 10.1016/S0168-1591(02)00019-9].

Wilson, S. F. (1982) Environmental influences on the activity of captive apes, Zoo Biology, 115: 201–9 [DOI: 10.1002/zoo.1430010304].

WIN (Wildlife Information Network). (2008). Gateway to WILDPRO, available online at.

Winne, C., Willson, J., Andrews, K., and Reed, R. (2006) Efficacy of marking snakes with disposable medical cautery units, Herpetological Review, 31: 52–4.

Winter, Y., Lopez, J., and Von Helversen, O. (2003) Ultraviolet vision in a bat, Nature, 425: 612–14 [DOI: 10.1038/nature01971].

Wishart, G. J. (2001) The cryopreservation of germplasm in domestic and non-domestic birds in P. F. Watson and W. V. Holt (eds) Cryobanking the Genetic Resource: Wildlife Conservation for the Future?, London: Taylor & Francis, pp. 179–200.

Wojciechowski, S. (2001) Is enrichment still good the next day? Overcoming the challenges of providing daily enrichment to multiple animal groups in a colony-type situation in M. Hawkins, K. E.Worley and B. Hammond (eds), Fifth International Conference On Environmental Enrichment, 4–9 November, Sydney, The Shape of Enrichment, Inc., pp. 211–20.

Wolf, R. and Tymitz, B. (1981) Studying visitor perceptions of zoo environments: a naturalistic view, International Zoo Yearbook, 21: 49–53 [DOI: 10.1111/j.1748-1090.1981.tb01943.x].

Wolfe, B. A. (2003) Toxoplasmosis in M. E. Fowler and M. E. Miller (eds), Zoo and Wild Animal Medicine (5th edn), Philadelphia, PA: Elsevier (Saunders), pp. 745–9.

Wolters, S. and Zuberbuhler, K. (2003) Mixed-species associations of Diana and Campbell’s monkeys: the costs and benefits of a forest phenomenon, Behaviour, 140: 371–85 [DOI: 10.1163/156853903321826684].

Wood, W. (1998) Interactions among environmental enrichment, viewing crowds and zoo chimpanzees, Zoo Biology, 17: 211–30 [DOI: 10.1002/(SICI)1098-2361(1998)17:3<211::AID-ZOO5>3.0.CO;2-C].

Woodfine, T., Gilbert, T., and Engel, H. (2005) A summary of past and present initiatives for the conservation and reintroduction of addax and scimitar-horned oryx in North Africa in B. Hiddinga (ed.), Proceedings of the EAZA Conference, 21–25 September, Kolmarden, Amsterdam: EAZA Executive Office, pp. 208–11.

Woolcock, D. (2000) Husbandry and management of kea Nestor notabilis at Paradise Park, Hayle, International Zoo Yearbook, 37: 146–52 [DOI: 10.1111/j.1748-1090.2000.tb00715.x].

Woollard, S. (1998) The development of zoo education, International Zoo News, 45: 422–6.

Woollard, S. (1999) A review of zoo education in the United Kingdom and Ireland, International Zoo News, 46: 20–4.

Woollard, S. (2001) Teachers’ evaluation of zoo education, International Zoo News, 48: 240–5.

Woolverton, W., Ator, N., Beardsley, P., and Carroll, M. (1989) Effects of environmental conditions on the psychological well-being of primates: a review of literature, Life Sciences, 4414: 901–17 [DOI: 10.1016/0024-3205(89)90489-X].

Wormell, D., Brayshaw, M., Price, E., and Herron, S. (1996) Pied tamarins Saguinus bicolor bicolor at the Jersey Wildlife Preservation Trust: management, behaviour and reproduction, Dodo: Journal of the Wildlife Preservation Trust, 32: 76–97.

WRI/IUCN/UNEP/FAO/UNESCO (World Resources Institute/The World Conservation Union/United Nations Environment Programme in consultation with the Food and Agriculture Organization and the United Nations Education, Scientific and Cultural Organization). (1992) Global Biodiversity Strategy: Guidelines for Action to Save, Study and Use Earth’s Biotic Wealth Sustainably and Equitably, Washington DC: WRI.

Wyatt, T. D. (2003) Pheromones and Animal Behaviour, Cambridge: Cambridge University Press.

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Xiao, J., Wang, K., and Wang, D. (2005) Diurnal changes of behavior and respiration of Yangtze finless porpoises (Neophocaena phocaenoides asiaeorientalis) in captivity, Zoo Biology, 24: 531–41 [DOI: 10.1002/zoo.20070].

Xu, Y., Fang, S., and Li, Z. (2007) Sustainability of the South China tiger: implications of inbreeding depression and introgression, Conservation Genetics, 8: 1199–207 [DOI: 10.1007/s10592-006-9276-9].

Back to top

Yalowitz, S. S. (2004) Evaluating visitor conservation research at the Monterey Bay Aquarium, Curator, 47: 283–98.

Yates, K. and Plowman, A. (2004) Hoof overgrowth in Hartmann’s mountain zebra is a consequence of diet, substrate, and behaviour in C. Macdonald (ed.), Proceedings of the Sixth Annual Symposium on Zoo Research, 8–9 July, Edinburgh: BIAZA, pp. 305–12.

Young, R. J. (1998) Behavioural studies of guenons Cercopithecus spp at Edinburgh Zoo, International Zoo Yearbook, 36: 49–56 [DOI: 10.1111/j.1748-1090.1998.tb02883.x].

Young, R. J. (2003) Environmental Enrichment for Captive Animals, Oxford: Blackwell Science.

Young, R. J. and Cipreste, C. F. (2004) Applying animal learning theory: training captive animals to comply with veterinary and husbandry procedures, Animal Welfare, 13: 225–32.

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Zhang, G. Q., Swaisgood, R. R., Wei, R. P., Zhang, H. M., Han, H. Y., Li, D. S., Wu, L. F., White, A. M., and Lindburg, D. G. (2000) A method for encouraging maternal care in the giant panda, Zoo Biology, 19: 53–63 [DOI: 10.1002/(SICI)1098-2361(2000)19:1<53::AID-ZOO6>3.0.CO;2-9].

Ziegler, G. (1995) An alternative to processed meat diets: carcass feeding at Wildlife Safari, The Shape of Enrichment, 4: 1–5.

Ziegler, T. (2002) Selected mixed-species exhibits of primates in German zoological gardens, Primate Reports, 64: 7–71.

Zimmermann, A. and Wilkinson, R. (2007) The conservation mission in the wild: zoos as conservation NGOs? in A. Zimmerman, M. Hatchwell, L. Dickie, and C. West (eds), Zoos in the 21st Century: Catalysts for Conservation?, Conservation Biology Series No. 15, Cambridge: Cambridge University Press, pp. 303–22.

Zimmerman, A., Hatchwell, M., Dickie, L., and West, C. (2007) Zoos in the 21st Century: Catalysts for Conservation?, Conservation Biology series No. 15, Cambridge: Cambridge University Press.

Zimmermann, M. (1986) Behavioural investigations of pain in animals in I. J. H. Duncan and V. Molony (eds), Assessing Pain in Farm Animals, Luxembourg: Commission of the European Communities, pp. 16–27.

Zippel, K. (2005) ‘Zoos play a vital role in amphibian conservation’, AmphibiaWeb, available online at.

Zippel, K., Lacy, R., and Byers, O. (eds) (2006) CBSG/WAZA Amphibian Ex Situ Conservation Planning Workshop Final Report, Apple Valley, MN: IUCN, The SSC Conservation Breeding Specialist Group.

ZSL (Zoological Society of London) Living Conservation. (2005) Annual Report of the Zoological Society of London 2004–2005, London: ZSL123456, 7890.

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