Hostname: page-component-848d4c4894-pftt2 Total loading time: 0 Render date: 2024-06-01T13:52:08.035Z Has data issue: false hasContentIssue false

Fertility Control: An Option for Non-Lethal Control of Wild Carnivores?

Published online by Cambridge University Press:  11 January 2023

F A M Tuyttens*
Affiliation:
Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK
D W Macdonald
Affiliation:
Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK
*
Contact for correspondence and requests for reprints

Abstract

Three types of fertility control, surgical sterilization, hormonal chemosterilization, and immunosterilization, are reviewed with regard to their potential for controlling problematic populations of carnivores. The fertility control agent and delivery protocol of choice may vary considerably according to: (i) the reason for control; (ii) the degree, urgency and duration of population reduction required; (iii) concerns about ethics and public opinion; and (iv) the status, population dynamics, social structure, mating system, size, behaviour and reproductive endocrinology of the target animals. Although they are often perceived and advocated as more preferable methods of population control than lethal approaches, it is important that wildlife managers as well as members of the public realize that the ethical acceptability of the various fertility control techniques may differ considerably - and that numerous questions regarding their effectiveness, humaneness and ecological safety remain unanswered.

Type
Research Article
Copyright
© 1998 Universities Federation for Animal Welfare

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Alexander, N J 1994 Vaccines for contraception: a summary. Reproduction Fertility and Development 6: 417419Google Scholar
Alexander, N J and Bialy, G 1994 Contraceptive vaccine development. Reproduction Fertility and Development 6: 273280Google ScholarPubMed
Allen, S H 1982 Bait consumption and diethylstilbesterol influence on north Dakota red fox reproductive performance. Wildlife Society Bulletin 10: 374374Google Scholar
Andelt, W F 1987 Coyote predation. In: Nowak, H, Baker, M E, Obbard, M E and Malloch, R (eds) Wild Furbearer Management and Conservation in North America pp 128140. Ministry of Natural Resources: Ontario, CanadaGoogle Scholar
Anderson, D J and Alexander, N J 1983 A new look at antifertility vaccines. Fertility and Sterility 40: 557571Google Scholar
Anderson, D J, Johnson, P M, Alexander, N J, Jones, W R and Griffin, P D 1987 Monoclonal antibodies to human trophoblast and sperm antigens: report of two WHO-sponsored workshops. Journal of Reproduction and Fertility 10: 231257Google ScholarPubMed
Asa, C S 1993 The development of contraceptive methods for captive wildlife. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Atkinson, S and Yochem, P K 1993 The use of GnRH agonists for fertility and behavior control in pinnipeds. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Avrech, O M, Golan, A, Weinraub, Z, Bukovsky, I and Caspi, E 1991 Mifepristone (RU 486) alone or in combination with a prostaglandin analogue for termination of early pregnancy: a review. Fertility and Sterility 56: 385393CrossRefGoogle ScholarPubMed
Balser, D C 1964 Management of predator populations with antifertility agents. Journal of Wildlife Management 28: 352358CrossRefGoogle Scholar
Bartlett, E 1997 Jumbo birth control drives bull elephants wild. New Scientist 2084: 5Google Scholar
Batcheler, C L 1968 Compensatory response of artificially controlled mammal populations. Proceedings of the New Zealand Ecological Society 15: 2532Google Scholar
Batista, M C, Bristow, T L, Mathews, J, Stokes, W S, Loriaux, L and Nieman, L K 1991 Daily administration of the progesterone antagonist RU 486 prevents implantation in the cycling guinea pig. American Journal of Obstetrics and Gynecology 165: 8287CrossRefGoogle ScholarPubMed
Baulieu, E E 1989 Contragestion with RU486: a new approach to postovulatory fertility control. Acta Obstetrica et Gynecologica Scandinavica Supplement 149: 58CrossRefGoogle ScholarPubMed
Benedetti, M S, Doster, P, Barone, D, Efthymiopoulos, C, Peretti, G and Roncucci, R 1990 In-vivo interaction of cabergoline with rat brain dopamine receptors laballed with [H-3JN-N propylnorapomorphine. European Journal of Pharmacology 187: 399408CrossRefGoogle Scholar
Bhatt, M H, Keenan, S P, Fleetham, J A and Calne, D B 1991 Pleuropulmonary disease associated with dopamine agonist therapy. Annals of Neurology 30: 613616CrossRefGoogle ScholarPubMed
Bickle, C A, Kirkpatrick, J F and Turner, J W 1991 Contraception in striped skunks with NORPLANT® implants. Wildlife Society Bulletin 19: 334338Google Scholar
Black, R E, Levine, M M, Clements, M L, Young, C R, Svennerholm, A M and Holmgren, J 1987 Protective efficacy in humans of killed whole-vibrio oral cholera vaccine with and without the ß-subunit of cholera toxin. Infection and Immunity 55: 8184CrossRefGoogle Scholar
Bomford, M 1990 A Role for Fertility Control in Wildlife Management? (Bureau of Rural Resources Bulletin No 7). Australian Government Publishing Service: Canberra, AustraliaGoogle Scholar
Bomford, M and O'Brien, P 1990 Ecological principles of population management using fertility control. Presentation at the Fertility Control in Wildlife Conference, 21-24 November 1990, Melbourne, AustraliaGoogle Scholar
Bowen, R A, Olson, P N and Behrendt, M D 1985 Efficacy and toxicity of estrogens commonly used to terminate canine pregnancy. Journal of the American Veterinary Medicine Association 186: 783788Google ScholarPubMed
Boyle, D B 1994 Disease and fertility control in wildlife and feral animal populations: options for vaccine delivery using vectors. Reproduction Fertility and Development 6: 393400CrossRefGoogle Scholar
Braakman, A, Okkens, A C and van Haaften, B 1993 Medical methods to terminate pregnancy in the dog. Compendium on Continuing Education for the Practising Veterinarian 15: 15051512Google Scholar
Bradley, M P 1994 Experimental strategies for the development of an immunocontraceptive vaccine for the European red fox, Vulpes vulpes. Reproduction Fertility and Development 6: 307317CrossRefGoogle ScholarPubMed
Bradley, M P and Reed, K C 1990 fertility control of animal populations: a prospective study of gonads, gametes and genes. Presentation at the Fertility Control in Wildlife Conference, 21-24 November 1990, Melbourne, AustraliaGoogle Scholar
Brooks, J E and Bowerman, AM 1971 Estrogenic steroid used to inhibit reproduction in wild Norway rats. Journal of Wildlife Management 35: 444449CrossRefGoogle Scholar
Brown, R G, Kimmins, W C, Mezei, M, Parsons, J, Pohajdak, B and Bowen, W D 1996 Birth control in grey seals. Nature 379: 3031CrossRefGoogle Scholar
Brushman, H H, Linhart, S B, Balser, D S and Sparks, F 1967 A technique for producing antifertility tallow baits for predatory animals. Journal of Wildlife Management 32: 183184CrossRefGoogle Scholar
Buergelt, C P and Kollias, G V 1987 Proliferative disease in the uterus of two large Felidae receiving melengstrol acetate. In: Proceedings of the 34th Annual Meeting of the American College of Veterinary Pathology, 9-13 November 1987, Monterey, California p 32. American College of Veterinary Pathologists: Pittsburgh, USAGoogle Scholar
Caro, T M 1986 Indirect costs of play: cheetah cubs reduce maternal hunting success. Animal Behaviour 35: 295297CrossRefGoogle Scholar
Caughley, G, Pech, R and Grice, D 1992 Effect of fertility control on a population's productivity. Wildlife Research 19: 623627Google Scholar
Clinn, D R, Conley, A J and Evans, L E 1985 Bromocryptine as an abortifacient in the bitch. Proceedings of the Third Annual Medical Forum, 1-4 June 1985, San Diego, California ρ 137. American College of Veterinary Internal Medicine: Denver, USAGoogle Scholar
Concannon, P 1980 Effects of hypophysectomy and of LH administration on luteal phase plasma progesterone levels in the beagle bitch. Journal of Reproduction and Fertility 58: 407410CrossRefGoogle ScholarPubMed
Concannon, P W and Meyers-Wallen, V N 1991 Current and proposed methods for contraception and termination of pregnancy in dogs and cats. Journal of the American Veterinary Medicine Association 98: 12141225Google Scholar
Concannon, P W, Weinstein, P, Whaley, S and Frank, D 1987 Suppression of luteal function in dogs by luteinizing hormone antiserum and by bromocriptine. Journal of Reproduction and Fertility 81: 175180Google ScholarPubMed
Concannon, P W, Yeager, A, Frank, D and Iyampillai, A 1990 Termination of pregnancy and induction of premature luteolysis by the antiprogestagen, mifepristone, in dogs. Journal of Reproduction and Fertility 88: 99104CrossRefGoogle ScholarPubMed
Connell, N, Stover, C K and Jacobs, W R 1992 Old microbes with new faces: molecular biology and the design of new vaccines. Current Opinion in Immunology 4: 442448Google ScholarPubMed
Cooper, ERA, Jones, A R and Jackson, H 1974 Effects of alpha-chlorohydin and related compounds on the reproductive organs and fertility of the male rat. Journal of Reproduction and Fertility 38: 379386CrossRefGoogle ScholarPubMed
Couzinet, B and Schaison, G 1988 Mifegyne (mifepristone), a new antiprogestagen with potential therapeutic use in human fertility control. Drugs 35: 187191CrossRefGoogle Scholar
Cowley, M 1993 Reproductive control of foxes. Unpublished BSc Honours dissertation, Monash University, AustraliaGoogle Scholar
Croxatto, H B, Salvatierra, A M, Croxatto, H D and Fuentealba, B 1993 Effects of continuous treatment with low dose mifepristone throughout one menstrual cycle. Human Reproduction 8: 201207Google ScholarPubMed
Curtis, P D, Stout, R J and Myers, L A 1995 Citizen task force strategies for suburban deer management: the Rochester experience. In: McAnich J B (ed) Urban Deer: a Manageable Resource? pp 143-149. (Proceedings of The 55th Midwest Fish and Wildlife Conference, 12-14 December, St Louis, Missouri.)Google Scholar
de Almeida, M H 1987 Nuisance furbearer damage control in urban and suburban araes. In: Novak, M, Baker, J A, Obbard, M E and Malloch, B (eds) Wild Furbearer Management and Conservation in North America pp 128140. Ministry of Natural Resources: Ontario, CanadaGoogle Scholar
Deraedt, R, Bonnat, C, Busighy, M and Philibert, D 1985 Pharmokinetics of RU 486. In: Baulieu, E E and Segal, S (eds) The Antiprogesterin Steroid RU 486 and Human Fertility Control pp 120135. Plenum Press: New York, USAGoogle Scholar
Djiane, J and Kelly, P A 1993 Prolactin. In: Thibault, C, Levasseur, M C and Hunter, R H F (eds) Reproduction in Mammals and Man pp 121133. Ellipses: Paris, FranceGoogle Scholar
Dunbar, B S 1983 Antibodies to zona pellucida antigens and their role in fertility. In: Wegmann T G and Gill T J (eds) Immunology of Reproduction pp 505-534. Oxford University Press: Oxford, UKGoogle Scholar
Dunbar, B S 1993 Contraception in domestic and wildlife animal populations. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Eberhardt, L L 1977 Optimal policies for conservation of large mammals, with special reference to marine ecosystems. Environmental Conservation 74: 205212Google Scholar
Eberhardt, L L 1988 Testing hypotheses about populations. Journal of Wildlife Management 52: 5056CrossRefGoogle Scholar
Epifano, O and Dean, J 1994 Biology and structure of the zona pellucida: a target for immunocontraception. Reproduction Fertility and Development 6: 319330CrossRefGoogle ScholarPubMed
Ericsson, R J and Baker, V F 1970 Male antifertility compounds: biological properties of U-5879 and U-15,646. Journal of Reproduction and Fertility 21: 267276CrossRefGoogle Scholar
Farnsworth, N R and Waller, D P 1982 Current status of plant products reported to inhibit sperm. Research Frontiers in Fertility Regulation 2: 116Google ScholarPubMed
Faulkner, L C, Pineda, M H and Reimers, T J 1975 Immunization against gonadotropins in dogs. In: Neischlag, E (ed) Immunization with Hormones in Reproduction pp 199214. North Holland Publishing: Amsterdam, The NetherlandsGoogle Scholar
Fitzgerald, G, Saunders, L and Wilkinson, R 1996 Public perceptions and issues in the present and future management of possums. Technical Paper 96/4. Ministry of Agriculture and Fisheries: Wellington, New ZealandGoogle Scholar
Fowler, C W 1981 Density dependence as related to life history strategy. Ecology 62: 602610CrossRefGoogle Scholar
Freshman, J L, Olson, P N and Amann, R P 1990 The effects of methyltestosterone on reproductive function in male greyhounds. Theriogenology 33: 10571073CrossRefGoogle ScholarPubMed
Gao, Y and Short, R V 1993 The control of rodent populations. Oxford Reviews of Reproductive Biology 15: 265310Google ScholarPubMed
Gao, Y and Short, R V 1994a Fertility control in laboratory rats and mice after feeding with the antigestagen RU486. Journal of Reproduction and Fertility 101: 477481CrossRefGoogle ScholarPubMed
Gao, Y and Short, R V 1994b Fertility control in wild mice after feeding with RU486 or methyl testosterone. Journal of Reproduction and Fertility 101: 483487CrossRefGoogle ScholarPubMed
Gardner, H M, Hueston, W D and Donovan, E F 1985 Use of mibolerone in wolves and three Panthera species. Journal of the American Veterinary Medicine Association 187: 11931194Google ScholarPubMed
Garrott, R A 1993 Prospects for effective management of wildlife populations by the manipulation of reproductive rates. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Garrott, R A 1995 Effective management of free-ranging ungulate populations using contraception. Wildlife Society Bulletin 23: 445452Google Scholar
Gill, R B and Miller, M W 1993 Physiological, ethological, philosophical and policy issues of wildlife contraception. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Ginsberg, J R and Macdonald, D W 1990 Foxes, Wolves, Jackals, and Dogs: an Action Plan for the Conservation of Canids. IUCN: Gland, SwitzerlandGoogle Scholar
Gonzalez, A, Allen, A F, Post, K, Mapletoft, R J and Murphy, B D 1989 Immunological approaches to contraception in dogs. Journal of Reproduction and Fertility, Supplement 39: 189198Google ScholarPubMed
Goulet, E A and Sadlier, R M F S 1974 The effects of a chemosterilant (mestranol) on population and behaviour in the Richardson's ground squirrel (Spermophilus richardsoni) in Alberta. Proceedings of the Vertebrate Control Conference 6: 90100Google Scholar
Griffin, P D 1994 Immunization against HCG. Human Reproduction 9: 267272CrossRefGoogle ScholarPubMed
Gwatkin, R B L, Anderson, O F and Williams, D T 1980 Large scale isolation of bovine and pig zonae pellucidae: chemical, immunological and receptor properties. Gamete Research 3: 217231CrossRefGoogle Scholar
Harris, S and Saunders, G 1993 The control of canid populations. Symposium of the Zoological Society of London 65: 441464Google Scholar
Hassan, T, Falvo, R E, Chandrashekar, V, Schanbacher, D and Awoniyi, C 1985 Active immunization against LHRH in the male mongrel dog. Biology of Reproduction 2(Supplement 1): 222236Google Scholar
Herr, J, Wright, R M, John, E, Foster, J, Kays, T and Flickenger, C J 1990 Identification of human acrosomal antigen SP-10 in primates and pigs. Biology of Reproduction 42: 377382Google ScholarPubMed
Hobbs, N T and Kirchner, T B 1993 Efficacy of contraceptive regimes for regulating vertebrate population growth: a general model. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Holland, M K and Jackson, R J 1994 Virus-vectored immunocontraception for control of wild rabbits: identification of target antigens and construction of recombinant viruses. Reproduction Fertility and Development 6: 631 -642CrossRefGoogle Scholar
Hone, J 1992 Rate of increase and fertility control. Journal of Applied Ecology 29: 695698CrossRefGoogle Scholar
Howard, W E 1967 Biocontrol and chemosterilants. In: Kilgore, W W and Doutt, R L (eds) Pest Control-Biological, Physical and Selected Chemical Methods pp 343386. Academic Press: London, UKGoogle Scholar
Hughes, S and Rogers, M 1994 Tuberculosis Vaccine Develoment: A Feasibility Study of Vaccination of the Badger (Meles meles) against Mycobacterium bovis. Appendix 1 of Report CPB 498 of Steering Committee for Tuberculosis Vaccine Development for the Department of Agriculture, Food and Forestry and the Department of Agriculture for Northern IrelandGoogle Scholar
Hutchinson, J S M 1993 Controlling Reproduction. Chapman and Hall: London, UKGoogle Scholar
Jackson, H 1973 Chemical methods of male contraception. American Scientist 61: 188193Google ScholarPubMed
Jackson, W F 1953 Management of canine mismating with diethylstilbestrol. California Veterinarian (Nov/Dec): 22:-29Google Scholar
Jöchle, W 1991 Pet population control in Europe. Journal of the American Veterinary Medicine Association 198: 12251230Google ScholarPubMed
Jöchle, W, Arbeiter, K, Post, K, Ballabio, R and D'Ver, A S 1989 Effects of pseudo-pregnancy, pregnancy and interoestrous intervals of pharmacological suppression of prolactin secretion in female dogs and cats. Journal of Reproduction and Fertility, Supplement 39: 199207Google Scholar
Jöchle, W and Jöchle, M 1988 Interruption of pregnancies in the queen with a prolactin inhibitor, cabergoline. Rivista di Zootecnia e Veterinaria 16: 8588Google Scholar
Jöchle, W and Jöchle, M 1993 Reproduction in a feral cat population and its control with a prolactin inhibitor, cabergoline. Journal of Reproduction and Fertility, Supplement 47: 419424Google Scholar
Johnson, E and Tait, A J 1983 Prospects for the chemical control of reproduction in the grey squirrel. Mammal Review 13: 167172CrossRefGoogle Scholar
Johnston, D H, Bachman, P, Calder, L L, Crosgrey, S J, Fielding, C M, Fong, D W, Lawson, K F, Macinnes, C D, Nunan, C P, Pedde, M J, Pond, B A, Tinline, R R and Voigt, D R 1993 Techniques for the distribution of biological agents to wild carnivore populations by aircraft. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Kilgore, W W 1967 Chemosterilants. In: Kilgore, W W and Doutt, R L (eds) Pest Control: Biological, Physical, and Selected Chemical Methods pp 197239. Academic Press: London, UKGoogle Scholar
Kirkpatrick, J F, Calle, P P, Kalk, P, Kolter, L, Zimmerman, W, Goodrowe, K, Liu, I K M, Turner, J W, Bernoco, M and Rutberg, A T 1993 Immunocontraception in zoo animals: vaccination against pregnancy. In: Proceedings of the American Association of Zoo Veterinarians Annual Meeting, 10-15 October 1993, St Louis, Missouri, pp 290292. AAZV: Media, Pennsylvania, USAGoogle Scholar
Kirkpatrick J F, Liu I K M and Turner J W Jr 1990 Remotely-delivered immuno-contraception in feral horses. Wildlife Society Bulletin 18: 326330Google Scholar
Kirkpatrick J F and Turner J W Jr 1985 Chemical fertility control and wildlife management. BioScience 35: 485491CrossRefGoogle Scholar
Kirkpatrick, J F and Turner, J W 1991 Reversible contraception in nondomestic animals. Journal of Zoo Wildlife Medicine 22: 392408Google Scholar
Knipling, E F 1959 Sterile male method of population control. Science 130: 902904CrossRefGoogle ScholarPubMed
Knipling, E F and McGuire, J U 1972 Potential role of sterilization for suppressing rat populations. A theorethical appraisal. Technical Bulletin, No 1455. Agricultural Research Service: US Department of Agriculture, Maryland, USAGoogle Scholar
Koch, E 1996 Villagers slam ‘Pill for elephants’. New Scientist 2058: 9Google Scholar
Kollias, G V, Calderwood-Mays, M B and Short, G 1984 Diabetes mellitus and abdominal adencarcinoma in a jaguar receiving megestrol acetate. Journal of the American Veterinary Medicine Association 185: 13831386Google Scholar
Kreeger, T J 1993 Overview of delivery systems for the administration of contraceptives to wildlife. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
LaChance, L E, Schmidt, C H and Bushland, R C 1967 Radiation-induced sterilization. In: Kilgore, W W and Doutt, R L (eds) Pest Control: Biological, Physical, and Selected Chemical Methods pp 147196. Academic Press: London, UKGoogle Scholar
Ladd, A, Prabhu, G, Tsong, Y Y, Probst, T, Chung, W and Thau, R B 1988 Active immunization against gonadotropin-releasing hormone combined with androgen supplementation is a promising antifertility vaccine for males. American Journal of Reproductive Immunology and Microbiology 17: 121 -127CrossRefGoogle ScholarPubMed
Ladd, A, Tsong, Y Y, Prabhu, G and Thau, R 1989 Effects of long-term immunization against LHRH and androgen treatment on gonadal function. Journal of Reproductive Immunology 15: 85101Google ScholarPubMed
Lavaud, J 1989 Emploi d'un antagoniste de la progesterone, le RU38346, abortif chez la chienne. Pratique Medicale 24: 253258Google Scholar
Linde-Forsberg, C, Kindahl, H and Madej, A 1992 Termination of mid-term pregnancy in the dog with oral RU486. Journal of Small Animal Practice 33: 331336CrossRefGoogle Scholar
Linhart, S B 1993 The current status of bait delivery systems for free-ranging carnivores and ungulates. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Linhart, S B, Brushman, H H and Balser, D S 1968 Field evaluation of an antifertility agent, stilbestrol, for inhibiting coyote reproduction. Transactions North American Wildlife Conference 33: 316326Google Scholar
Linhart, S B and Enders, R K 1964 Some effects of diethylstilbestrol on reproduction in captive red foxes. Journal of Wildlife Management 28: 358363Google Scholar
Linneham, R M and Edwards, J L 1991 Endometrial adenocarcinoma in a Bengal tiger (Panthera tigris bengalensis) implanted with melengestrol acetate. Journal of Zoo Wildlife Medicine 22: 130134Google Scholar
Loague, P 1993 Pest control and animal welfare. New Zealand Journal of Zoology 20: 253256CrossRefGoogle Scholar
MacNab, J 1985 Carrying capacity and related slippery shiboleths. Wildlife Society Bulletin 13: 403410Google Scholar
MacWhirter, R B 1991 Effects of reproduction on activity and foraging behaviour of adult female Columbian ground squirrels. Canadian Journal of Zoology 69: 22092216CrossRefGoogle Scholar
Mahi-Brown, C A, Huang, T T F Jr and Yamagimachi, R 1982 Infertility in bitches by active immunization with porcine zonae pellucidae. Journal of Experimental Zoology 222: 8995CrossRefGoogle ScholarPubMed
Mahi-Brown C A, Yanagimachi R, Hoffman J C and Huang T T F Jr 1985 Fertility control in the bitch by active immunization with porcine zonae pellucidae: use of different adjuvants and patterns of estradiol and progesterone levels in estrous cycles. Biology of Reproduction 32: 761772CrossRefGoogle Scholar
Maresh, G A and Dunbar, B S 1987 Antigenic comparison of five species of zona pellucidae. Journal of Experimental Zoology 244: 299307CrossRefGoogle Scholar
Marks, C A, Nijk, M, Gigliotti, F, Busana, F and Short, R V 1996 Field assessment of a cabergoline baiting campaign for reproductive control of the red fox (Vulpes vulpes). Wildlife Research 23: 161168CrossRefGoogle Scholar
Marsh, R E 1988 Chemostcrilants for rodent control. In: Prakash, I (ed) Rodent Pest Management pp 353367. CRC Press: Florida, USAGoogle Scholar
Marsh, R E and Howard, W E 1969 Evaluation of mestranol as a reproductive inhibitor of Norway rats in garbage dumps. Journal of Wildlife Management 33: 133138CrossRefGoogle Scholar
Marsh, R E and Howard, W E 1973 Prospects of chemosterilant and genetic control of rodents. Bulletin of the World Health Organisation 48: 309316Google ScholarPubMed
McDonald, M 1980 Population control of feral cats using megestrol acetate. Veterinary Record 106: 129CrossRefGoogle Scholar
McRae, G I, Roberts, B B, Worden, A C, Bajka, A and Vickery, B H 1985 Long-term reversible suppression of oestrus in bitches with nafarelin acetate, a potent LHRH agonist. Journal of Reproduction and Fertility 74: 389397CrossRefGoogle ScholarPubMed
McShea, W J, Monfort, S L, Haki, S, Kirkpatrick, J F, Liu, I K M, Turner, J W Jr, Chassy, L and Munson, L 1997 Immunocontraceptive efficacy and the impact of contraception on the reproductive behaviors of white-tailed deer. Journal of Wildlife Management 61: 560569CrossRefGoogle Scholar
Michalek, S M, Childers, N K, Katz, J, Dertzbaugh, M, Zhang, S, Russel, M W, Macrina, F L, Jackson, S and Mestecky, J 1992 Liposomes and conjugate vaccines for antigen delivery and induction of mucosal immune responses. In: Ciardi, J E (ed) Genetically Engineered Vaccines pp 191198. Plenum Press: New York, USACrossRefGoogle Scholar
Millar, R P, Tobler, C, King, J A and Arimura, A 1984 Region-specific antisera in molecular biology of neuropeptides: application in quantitation structural characterization and metabolism of luteinizing hormonereleasing hormone. In: Soreq, H (ed) Molecular Biology Approach to the Neurosciences pp 221230. John Wiley: New York, USAGoogle Scholar
Miller, L A, Thompson, R D, Johns, B E and Crane, K A 1993 Comparative efficacy of two immunocontraceptive vaccines for controlling reproduction in wild Norway rats. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Muller, L I, Warren, R J and Evans, D L 1997 Theory and practice of immunocontraception in wild mammals. Wildlife Society Bulletin 25: 504514Google Scholar
Munson, L 1993 Adverse effects of contraceptives in carnivores, primates and ungulates. In: Proceedings of the American Association of Zoo Veterinarians Annual Meeting, 10-15 October 1993, St Louis, Missouri pp 284288. AAZV: Media, Pennsylvania, USAGoogle Scholar
N az, R K, Sacco, A, Singb, O, Pal, R and Talwar, G P 1995 Development of contraceptive vaccines for humans using antigens derived from gametes (spermatozoa and zona pellucida) and hormones (human chorionic gonadotrophin): current status. Human Reproduction Update 1: 118CrossRefGoogle Scholar
Nettles, V F 1997 Potential consequences and problems with wildlife contraceptives. Reproduction Fertility and Development 9: 137144CrossRefGoogle ScholarPubMed
Neville, P F and Remfry, J 1984 Effect of neutering on two groups of feral cats. Veterinary Record 114: 447450CrossRefGoogle ScholarPubMed
Newton, J R 1995 Classification and comparison of oral contraceptives containing new generation progestogens. Human Reproduction Update 1: 231263CrossRefGoogle ScholarPubMed
Nie, G, Butt, A R, Salamonsen, L A and Findlay, J K 1997 Hormonal and non-hormonal agents at implantation as targets for contraception. Reproduction Fertility and Development 9: 6576CrossRefGoogle ScholarPubMed
Nijk, M 1992 Antigestagens for fertility control in the cats. Unpublished PhD thesis, Monash University, AustraliaGoogle Scholar
Niswender, G D, Schwall, R H, Fitz, T A, Farin, C E and Sawyer, H R 1985 Regulation of luteal function in domestic ruminants: new concepts. Recent Progress in Hormone Research 41: 101151Google ScholarPubMed
Okkens, A C, Bevers, M M, Dieleman, S J and Willemse, A H 1985 Shortening of the interoestrous interval and the lifespan of the corpus luteum of the cyclic dog by bromocriptine treatment. Veterinary Quarterly 7: 173176CrossRefGoogle Scholar
Oleyar, C M and McGinnes, B S 1974 Field evaluation of diethylstilbestrol for suppressing reproduction in foxes. Journal of Wildlife Management 38: 101 -106CrossRefGoogle Scholar
Olson, P N and Johnston, S D 1993 New developments in small animal population control. Journal of the American Veterinary Medicine Association 202: 904909Google ScholarPubMed
Onclin, K, Silva, L D M, Donnay, I and Verstegen, J P 1993 Luteotrophic action of prolactin in dogs and the effects of a dopamine agonist, cabergoline. Journal of Reproduction and Fertility, Supplement 47: 403409Google ScholarPubMed
Oogjes, G 1997 Ethical aspects and dilemmas of fertility control of unwanted wildlife: an animal welfarist's perspective. Journal of Reproduction Fertility and Development 9: 163168CrossRefGoogle ScholarPubMed
Orford, H J L, Perrin, M R and Berry, H H 1988 Contraception, reproduction and demography of free-ranging Etosha lions (Panthera leo). Journal of Zoology 216: 717733CrossRefGoogle Scholar
Ownby, C L and Shivers, C A 1972 Antigens of the hamster ovary and effects of anti-ovary serum on eggs. Biology of Reproduction 6: 310318CrossRefGoogle ScholarPubMed
Perry, B D 1989 The oral immunization of animals against rabies. In: Raw, M E and Hill, F W G (eds) Veterinary Annual, 1989, 29th edition. Butterworth Scientific: London, UKGoogle Scholar
Pianka, E R 1970 On r- and I-selection. American Naturalist 104: 592597CrossRefGoogle Scholar
Post, K, Evans, L E and Jöchle, W 1988 Effect of prolactin suppression with cabergoline on the pregnancy of the bitch. Tijdschrift voor Diergeneeskunde 113 (Supplement 1): 118S-120SGoogle Scholar
Primakoff, P, Lathrop, W, Wool man, L, Cowan, A and Myles, D 1988 Fully effective contraception in the male and female guinea pigs immunized with the sperm protein PH-20. Nature 335: 543546CrossRefGoogle ScholarPubMed
Raphael, B L, Huntress, S L and Curro, T G 1990 Reproductive disorders associated with progestin implants in a group of exotic felids. Proceedings of the American Association of Zoo Veterinarians Annual Meeting, 21-26 October 1990, South Padre Island, Texas pp 282283. AAZV: Media, PennsylvaniaGoogle Scholar
Remfry, J 1978 Control of feral cat populations by long-term adminidtration of megestrol acetate. Veterinary Record 103: 403404CrossRefGoogle Scholar
Rhim, S H, Millar, S E, Robey, F, Luo, A-M, Lou, Y-H, Allen, P, Dean, J and Tung, K S K 1992 Autoimmune disease of the ovary induced by an 8 amino acid zona pellucida peptide. Journal of Clinical Investigation 89: 2835CrossRefGoogle Scholar
Robinson, A J and Holland, M K 1995 Testing the concept of virally vectored immunosterilisation for the control of wild rabbit and fox populations in Australia. Australian Veterinary Journal 72: 6568CrossRefGoogle ScholarPubMed
Romagnoli, S E, Camillo, F, Cela, M, Johnston, S D, Grassi, F, Ferdeghini, M and Aria, G 1993 Clinial use of prostaglandin F2a to induce early abortion in bitches: serum progesterone, treatment outcome and interval to subsequent oestrus. Journal of Reproduction and Fertility, Supplement 47: 425431Google Scholar
Roser, K F and Evans, J W 1983 Luteal luteinizing hormone receptors during the postovulatory period in the mare. Biology of Reproduction 29: 499510CrossRefGoogle ScholarPubMed
Rotchild, I 1981 The regulation of the mammlaian corpus luteum. Recent Progress in Hormone Research 37: 183298Google Scholar
Rowley, L 1968 Studies on the resurgence of rabbit populations after poisoning. CSIRO Wildlife Research 13: 5969CrossRefGoogle Scholar
Ruprecht, C E 1993 Considerations for the delivery of immunocontraceptive vaccines to free-ranging carnivores. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Sankai, T, Endo, T, Kanayama, K, Sakuma, Y, Umezu, M and Masaki, J 1991 Antiprogesterone compound, RU486 administration to terminate pregnancy in dogs and cats. Journal of Veterinary Medical Science 53: 10691070CrossRefGoogle ScholarPubMed
Saunders, G and Mcllroy, J 1996 The effect of imposed sterility on the survival, fecundity, territoriality and social structure of foxes. Paper presented at the Fourth International Conference on Fertility Control for Wildlife Management, 8-11 July 1996, Great Keppel Island, Queensland, AustraliaGoogle Scholar
Seal, US 1991 fertility control as a tool for regulating captive and free-ranging wildlife populations. Journal of Zoo Wildlife Medicine 22: 1 -5Google Scholar
Seal, U S, Barton, R, Mather, L, Oberding, K, Plotka, E D and Gray, C W 1976 Hormonal contraception in captive female lions (Panthera leo). Journal of Zoo Animal Medicine 7: 117Google Scholar
Seal, U S, Plotka, E D and Gray, C W 1978 Baseline haematology, serum chemistry and hormone data for captive tigers (Panthera tigris) and lions (Panthera leo). In: International Tiger Studbook. Zoologischer Garten: Leipzig, GermanyGoogle Scholar
Shellam, G R 1994 The potential of murine cytomegalovirus as a viral vector for immunocontraception. Reproduction Fertility and Development 6: 401409CrossRefGoogle ScholarPubMed
Sherwin, B 1990 Genetic implications of reduced fertility. Presentation at the Fertility Control in Wildlife Conference, 21-24 November 1990, Melbourne, AustraliaGoogle Scholar
Shivers, C A, Sieg, P M and Kitchen, H 1981 Pregnancy prevention in the dog: potential for an immunological approach. Journal of the American Animal Hospital Association 17: 823828Google Scholar
Singer, P 1997 Neither human nor natural: ethics and feral animals. Reproduction Fertility and Development 9: 157162CrossRefGoogle Scholar
Skinner, S M, Mills, T, Kirchick, H J and Dunbar, BS 1984 Immunization with zona pellucida proteins results in abnormal ovarian differentiation and inhibition of gonadotrophin-induced steroid secretion. Endocrinology 115: 24182432CrossRefGoogle Scholar
Skinner, S M, Niu, E M, Bundman, D S, Lo, C and Dunbar, B S 1987 Use of immunoaffinity purified antibodies to zona pellucida to compare alloimmunization of male and female rabbits. Journal of Reproductive Immunology 12: 8192CrossRefGoogle ScholarPubMed
Smith, P, Moore, H D and Cowan, D P 1995 Review of the Potential of Immunocontraceptives for Wildlife Management in the UK, Project No. VC0403. Countryside Division, MAFF: UKGoogle Scholar
Sokolowski, J H and Zimbelman, R G 1976 Evaluation of selected compounds for estrus control of the bitch. American Journal of Veterinary Research 37: 939941Google ScholarPubMed
Spradbury, J P 1994 Screw-worm fly: a tale of two species. Agricultural Zoology Review 6: 162Google Scholar
Stellflug, J N, Gates, N L and Sasser, R G 1978 reproductive inhibitors for coyote population control: developments and current status. Proceedings of the Vertebrate Pest Conference 8: 185189Google Scholar
Stelmasiak, T, Rawlin, G T and Waddington, J N 1993 Modification of behavior in captive kangaroos by immunisation against luteinizing hormone releasing hormone (LH-RH). Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Stelmasiak, T and Van Mourik, S 1990 Contraception: the concept and practical applications in wildlife management. Presentation at the Fertility Control in Wildlife Conference, 21-24 November 1990, Melbourne, AustraliaGoogle Scholar
Stenseth, N C 1981 How to control pest species: application of models from the theory of island biogeography in formulating pest control strategies. Journal of Applied Ecology 18: 773794CrossRefGoogle Scholar
Stevens, V C 1986 Current status of antifertility vaccines using gonadotropin immunogens. Immunology Today 7: 369374CrossRefGoogle ScholarPubMed
Stevens, V C 1990 Studies on various delivery systems for a human chorionic gonadotrophin vaccine. In: Alexander, N J, Griffin, D, Spieler, J M and Waites, S M (eds) Gamete Interaction: Prospectives for Immunocontraception pp 549563. Wiley Press: New York, USAGoogle Scholar
Storm, G L and Sanderson, G C 1969 Effect of medroxy-progesterone acetate (Provera) on productivity in captive foxes. Journal of Mammalogy 50: 147149CrossRefGoogle Scholar
Stout, R, Knuth, B A and Curtis, P D 1997 Preferences of suburban landowners for deer management techniques; a step towards better communication. Wildlife Society Bulletin 25(2): 348359Google Scholar
Sturtevant, J 1970 Pigeon control by chemosterilization: population model from laboratory results. Science 170: 322324CrossRefGoogle ScholarPubMed
Sutherland, O R W, Cowan, P E and Orwin, J 1996 Biological control of possums, Trichosurus vulpecula, and rabbits, Orcytolagus cuniculus, in New Zealand. Wildlife Biology 2: 165170CrossRefGoogle Scholar
Swahn, M and Bygdeman, M 1989 Termination of early pregnancy with RU486 (mifepristone) in combination with a prostaglandin analogue (sulprostone). Acta Obstetrica et Gynecologica Scandinavica 68: 293300CrossRefGoogle ScholarPubMed
Swinton, J, Tuyttens, F A M, Macdonald, D W and Cheeseman, C L 1997 Social perturbation and bovine tuberculosis in badgers: fertility control and lethal control compared. Philosophical Transactions of the Royal Society of London B 352: 619631CrossRefGoogle Scholar
Taussig, M J 1993 Uteroglobin as an immunocontraceptive vaccine for rabbits. Presentation at the Vertebrate Control Review Meeting, 20 November 1993, London. MAFF: UKGoogle Scholar
Taverne M A M, Weyden G C van der and Oord H A van 1989 Pregnancy and parturition in dogs: approached from some diagnostic, patho-physiological and therapeutic points of view. In: Christiansen, L J (ed) Proceedings of a Symposium on Reproduction in the Dog pp 7188. The Royal Veterinary Agricultural University: Copenhagen, DenmarkGoogle Scholar
Travis, H F and Schaible, P J 1962 Effects of diethylstilbestrol fed periodically during gestation of female mink upon reproductive and kit performance. American Journal of Veterinary Research 23: 359361Google ScholarPubMed
Tribe, A and Booth, R 1990 Fertility control in Australian zoos. Presentation at the Fertility Control in Wildlife Conference, 21-24 November 1990, Melbourne, AustraliaGoogle Scholar
Turner, J W Jr, Liu, I K M and Kirkpatick, J F 1992 Remotely delivered immuno-contraception in captive white-tailed deer. Journal of Wildlife Management 56: 154157Google Scholar
Tuyttens, F A M and Macdonald, D W (in press) Sterilisation as an alternative strategy to control wildlife diseases: bovine tuberculosis in European badgers as a case study. Biodiversity and Conservation 7:Google Scholar
Tyndale-Biscoe, C H 1991 Fertlity control in wildlife. Reproduction Fertility and Development 3: 339343CrossRefGoogle Scholar
Tyndale-Biscoe, C H 1994 Virus-vectored immunocontraception of feral mammals. Reproduction Fertility and Development 6: 281287CrossRefGoogle ScholarPubMed
Tyndale-Biscoe, C H and Jackson, R 1990 Viral vectored immunosterilisation: a new concept in biological control of wild animals. Presentation at the Fertility Control in Wildlife Conference, 21-24 November 1990, Melbourne, AustraliaGoogle Scholar
Van Look, P F A and von Hertzen, H 1995 Clinical uses of antiprogestogens. Human Reproduction Update 1: 1934CrossRefGoogle ScholarPubMed
Vertebrate Biocontrol Centre 1994 The Cooperative Research Centre for Biological Control of Vertebrate Pest Populations: Annual Report 1993-1994. VBC: Lyneham, AustraliaGoogle Scholar
Verstegen, J P L, Onclin, K, Silva, L D M and Concannon, P 1994 Early termination of anestrus and induction of fertile estrus in dogs by the dopamine super-agonist cabergoline. (Abstract from the twenty-seventh Annual Meeting of the Society for the Study of Reproduction, Ann Arbor, Michigan, USA, July 24-27, 1994). Biology of Reproduction 50 (Supplement 1): 157Google Scholar
Verstegen, J P L, Onclin, K, Silva, L D M and Donnay, I 1993 a Abortion induction in the cat using prostaglandin F and a new anti-prolactinic agent, cabergoline. Journal of Reproduction and Fertility, Supplement 47: 411417Google Scholar
Verstegen, J P L, Onclin, K, Silva, L D M, Wouters-Ballmann, P, Donnay, I, Delahaut, P and Ectors, F 1993b Induction de l'avortement chez la chatte par la Cabergoline, agoniste dopaminergique anti-prolactinique specifique. Annales de Médecine Vétérinaire 137: 251259Google Scholar
Vickery, B, McRae, G, Briones, W, Worden, A, Seidenberg, R, Schanbacher, B D and Falvo, R 1984a Effects of an LHRH agonist upon sexual function in male dogs. Journal of Andrology 5: 2842CrossRefGoogle ScholarPubMed
Vickery, B H, McRae, G I, Goodpasture, J C and Sanders, L M 1989 Use of potent LHRH analogues for chronic contraception and pregnancy termination in dogs. Journal of Reproduction and Fertility, Supplement 39: 175187Google ScholarPubMed
Vickery, B H, Nestor, J J and Hafez, ESE 1984b LHRH and its Analogs: Contraceptive and Therapeutic Applications. MTP Press: Lancaster, UKCrossRefGoogle Scholar
Warren, R J 1995 Should wildlife biologists be involved in wildlife contraception research and management? Wildlife Society Bulletin 23: 441444Google Scholar
Wichtel, J J, Whitacre, M D and Yates, D J 1990 Comparison of the effects of PGF2-alpha and bromocriptine in pregnant beagle bitches. Theriogenology 33: 829836CrossRefGoogle Scholar
William, O and McKegg, J 1987 Nuisance furbearer management programs for urban areas. In: Novak, M, Baker, J A, Obbard, M E and Malloch, B (eds) Wild Furbearer Management and Conservation in North America pp 128140. Ministry of Natural Resources: Ontario, CanadaGoogle Scholar
Williams, C K 1997 Development and use of virus-vectored immunocontraception. Reproduction Fertility and Development 9: 169178CrossRefGoogle ScholarPubMed
World Health Organization 1993 WHO Informal Consultation on Reproductive Control of Carnivores, Geneva, June 1993. World Health Organization: Geneva, SwitzerlandGoogle Scholar
Zemlicka, D E 1993 Evaluation of tubal ligation and vasectomy on pair-bond and territorial display behaviors in captive coyotes. Presentation at the Symposium on Contraception in Wildlife Management, 26-28 October 1993, Denver, Colorado, USAGoogle Scholar
Ziecik, A, Shaw, H J and Flint, A F F 1980 Luteal LH receptors during the estrous cycle and early pregnancy in the pig. Journal of Reproduction and Fertility 60: 129137Google ScholarPubMed