The HABRI Central Team continues to monitor emerging research and information about the COVID-19 pandemic. Visit our collection of resources, https://habricentral.org/features/covid-19
Administering GonaCon super( TM) to white-tailed deer via hand-injection versus syringe-dart
Contributor(s):: Evans, Charles S., DeNicola, Anthony J., Eisemann, John D., Eckery, Douglas C., Warren, Robert J.
Regulation of tree squirrel populations with immunocontraception: a fox squirrel example
Contributor(s):: Krause, Sara K., Kelt, Douglas A., Van Vuren, Dirk H., Gionfriddo, James P.
Survival analysis and computer simulations of lethal and contraceptive management strategies for urban deer
Contributor(s):: Grund, M. D.
Investigating potential effects of the contraceptive Implanon on the behavior of free-ranging adult female Barbary macaques
Contributor(s):: Maijer, A. M., Semple, S.
In recent years, the use of hormonal contraception in captive, free-ranging, and wild mammal populations has increased, but the effects on these nonhuman animals' behavior and the associated welfare impacts remain poorly understood. This study of free-ranging adult female Barbary macaques (...
A review of population control methods in captive-housed primates
Contributor(s):: Wallace, P. Y., Asa, C. S., Agnew, M., Cheyne, S. M.
The success of breeding primates in captivity has led to a surplus number of animals in collections. This review examines published journals and key books to investigate the various methods of primate population control. Hormonal, surgical and separation methods are discussed and evaluated with...
Absence of effects from immunocontraception on seasonal birth patterns and foal survival among barrier island wild horses
Contributor(s):: Kirkpatrick, J. F., Turner, A.
Despite a large body of safety data, concern exists that porcine zonae pellucidae (PZP) immunocontraception - used to manage wild horse populations - may cause out-of-season births with resulting foal mortality. Our study at Assateague, Maryland indicated the effects of immunocontraception on...
Assessment: effects of porcine zona pellucida immunocontraception on oestrous cyclicity in feral horses
Contributor(s):: Powell, D. M., Monfort, S. L.
The following study used noninvasive faecal hormone monitoring to assess whether contraception with porcine zona pellucida (PZP) had an impact on oestrous cycle characteristics in a herd of feral horses living on Assateague Island, Maryland. The study assayed longitudinal faecal samples,...
Preliminary Evaluation of Porcine Zona Pellucida (PZP) Immunocontraception for Behavioral Effects in Feral Horses (Equus caballus)
| Contributor(s):: Powell, David M.
Evaluates the behavioral effects of immunocontraception, a novel method of population control, on feral horses. Behavior of sexually mature mares after administration of Porcine zona pellucida (PZP) immunocontraception; Differences between PZP-treated and untreated mares in general activity...
Utilization of matrix population models to assess a 3-year single treatment nonsurgical contraception program versus surgical sterilization in feral cat populations
| Contributor(s):: Budke, C. M., Slater, M. R.
This study constructed matrix population models to explore feral cat population growth for a hypothetical population (a) in the absence of intervention; (b) with a traditional surgical sterilization-based trap, neuter, and return program; and (c) with a single treatment 3-year nonsurgical...
Behavior of feral horses in response to culling and GnRH immunocontraception
| Contributor(s):: Ransom, J. I., Powers, J. G., Garbe, H. M., Oehler, M. W., Sr., Nett, T. M., Baker, D. L.
Wildlife management actions can alter fundamental behaviors of individuals and groups, which may directly impact their life history parameters in unforeseen ways. This is especially true for highly social animals because changes in one individual's behavior can cascade throughout its social...
ISFM guidelines on population management and welfare of unowned domestic cats (Felis catus)
| Contributor(s):: Sparkes, A. H., Bessant, C., Cope, K., Ellis, S. L., Finka, L., Halls, V., Hiestand, K., Horsford, K., Laurence, C., MacFarlaine, I., Neville, P. F., Stavisky, J., Yeates, J., Isfm,
Humane wildlife solutions : the role of immunocontraception
| Contributor(s):: Rutberg, Allen Theodore
Fertility control of California ground squirrels using GnRH immunocontraception
| Contributor(s):: Paul B. Nash, David K. James, Lucia T. Hui, Lowell A. Miller
Population of wildlife, such as California ground squirrels, can grow to the extent that they come in conflict with humans. Contraception is a method of population management under investigation that may be useful in situations where neither leaving the animals uncontrolled nor lethal control are...
Unintended consequences of bovine brucellosis management on demand for elk hunting in northwestern Wyoming
| Contributor(s):: Kauffman, M. E., Rashford, B. S., Peck, D. E.
Animal control, birth control, and community education: impacts on the Colorado Springs pet population, 1970-1984
| Contributor(s):: Arkow, P.
The practical side of immunocontraception: zona proteins and wildlife
| Contributor(s):: Kirkpatrick, J. F., Rowan, A., Lamberski, N., Wallace, R., Frank, K., Lyda, R.
Minimizing harm in possum control operations and experiments in New Zealand
| Contributor(s):: Morris, M. C., Weaver, S. A.
Pest control operations and experimentation on sentient animals such as the brushtail possum can cause unnecessary and avoidable suffering in the animal subjects. Minimizing animal suffering is an animal welfare goal and can be used as a guide in the design and execution of animal experimentation...
Immunocontraception decreases group fidelity in a feral horse population during the non-breeding season
| Contributor(s):: Nunez, C. M. V., Adelman, J. S., Mason, C., Rubenstein, D. I.
The behavioral effects of the immunocontraceptive agent porcine zona pellucida (PZP) have not been adequately studied. Important managerial decisions for several species, including the wild horse (Equus caballus), have been based on this limited research. We studied 30 horses on Shackleford...
Influences of immunocontraception on time budgets, social behavior, and body condition in feral horses
| Contributor(s):: Ransom, J. I., Cade, B. S., Hobbs, N. T.
Managers concerned with shrinking habitats and limited resources for wildlife seek effective tools for limiting population growth in some species. Fertility control is one such tool, yet little is known about its impacts on the behavioral ecology of wild, free-roaming animals. We investigated...
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 ). (Special issue: Primates in zoos)
| Contributor(s):: Plowman, A. B., Jordan, N. R., Anderson, N., Condon, E., Fraser, O.
In response to overpopulation, management actions were taken over a 5-year period to reduce group size and slow the population growth rate of hamadryas baboons at Paignton Zoo Environmental Park. Management involved three planned removals of several individuals and implantation of all adult...