Wildlife contraceptives are contraceptives used to regulate the fertility of

wild animals Wildlife refers to undomesticated animal species, but has come to include all organisms that grow or live wild in an area without being introduced by humans. Wildlife was also synonymous to game: those birds and mammals that were hunted fo ...

. They are used to control population growth of certain wild animals.

Usage

White-tailed deer The white-tailed deer (''Odocoileus virginianus''), also known as the whitetail or Virginia deer, is a medium-sized deer native to North America, Central America, and South America as far south as Peru and Bolivia. It has also been introduced t ...

may be controlled with contraceptives in

suburb A suburb (more broadly suburban area) is an area within a metropolitan area, which may include commercial and mixed-use, that is primarily a residential area. A suburb can exist either as part of a larger city/urban area or as a separate ...

an areas, where they are sometimes a

nuisance Nuisance (from archaic ''nocence'', through Fr. ''noisance'', ''nuisance'', from Lat. ''nocere'', "to hurt") is a common law tort. It means that which causes offence, annoyance, trouble or injury. A nuisance can be either public (also "common") ...

. In parts of the United States, does are shot with darts containing a

contraceptive vaccine Immunocontraception is the use of an animal's immune system to prevent it from fertilizing offspring. Contraceptives of this type are not currently approved for human use. Typically immunocontraception involves the administration of a vaccine tha ...

, rendering them temporarily infertile.Schuerman, M
Birth Control for Deer?.
''Audubon'' February 8, 2002. The

Humane Society of the United States The Humane Society of the United States (HSUS) is an American nonprofit organization that focuses on animal welfare and opposes animal-related cruelties of national scope. It uses strategies that are beyond the abilities of local organizations. ...

runs a deer birth control program, but it is experimental; it may not be

cost-effective Cost-effectiveness analysis (CEA) is a form of economic analysis that compares the relative costs and outcomes (effects) of different courses of action. Cost-effectiveness analysis is distinct from cost–benefit analysis, which assigns a monetar ...

in the long run. It may cost $300 to $1000 per deer. One contraceptive vaccine used is

porcine zona pellucida Porcine zona pellucida (PZP) is the zona pellucida extracted from the ovaries of pigs which is used as a source of antigens for immunocontraception. The zona pellucida is a thick membrane that surrounds the unfertilised eggs of mammals. In order fo ...

(PZP), or derivatives. This form of

immunocontraception Immunocontraception is the use of an animal's immune system to prevent it from fertilizing offspring. Contraceptives of this type are not currently approved for human use. Typically immunocontraception involves the administration of a vaccine tha ...

prevents sperm from accessing an

ovum The egg cell, or ovum (plural ova), is the female reproductive cell, or gamete, in most anisogamous organisms (organisms that reproduce sexually with a larger, female gamete and a smaller, male one). The term is used when the female gamete is ...

. Another form of deer contraception, called GonaCon, produces antibodies to sex drive hormones in the deer, causing them to lose interest in mating. Similar forms of injectable contraceptive are being studied for use in

elk The elk (''Cervus canadensis''), also known as the wapiti, is one of the largest species within the deer family, Cervidae, and one of the largest terrestrial mammals in its native range of North America and Central and East Asia. The common ...

and

gray squirrel Gray squirrel or grey squirrel may refer to several species of squirrel indigenous to North America: *The eastern gray squirrel (''Sciurus carolinensis''), from the eastern United States and southeastern Canada; introduced into the United Kingdom, I ...

s.Dalhouse, D
Squirrel contraceptive research under way.
Clemson University News March 10, 2008.

Oral contraceptives Oral contraceptives, abbreviated OCPs, also known as birth control pills, are medications taken by mouth for the purpose of birth control. Female Two types of female oral contraceptive pill, taken once per day, are widely available: * The combin ...

may also be developed for

population control Population control is the practice of artificially maintaining the size of any population. It simply refers to the act of limiting the size of an animal population so that it remains manageable, as opposed to the act of protecting a species from ...

among a variety of animals, including

deer Deer or true deer are hoofed ruminant mammals forming the family Cervidae. The two main groups of deer are the Cervinae, including the muntjac, the elk (wapiti), the red deer, and the fallow deer; and the Capreolinae, including the re ...

feral pig The feral pig is a domestic pig which has gone feral, meaning it lives in the wild. They are found mostly in the Americas and Australia. Razorback and wild hog are Americanisms applied to feral pigs or boar-pig hybrids. Definition A feral ...

coyote The coyote (''Canis latrans'') is a species of canis, canine native to North America. It is smaller than its close relative, the wolf, and slightly smaller than the closely related eastern wolf and red wolf. It fills much of the same ecologica ...

cougar The cougar (''Puma concolor'') is a large Felidae, cat native to the Americas. Its Species distribution, range spans from the Canadian Yukon to the southern Andes in South America and is the most widespread of any large wild terrestrial mamm ...

dog The dog (''Canis familiaris'' or ''Canis lupus familiaris'') is a domesticated descendant of the wolf. Also called the domestic dog, it is derived from the extinct Pleistocene wolf, and the modern wolf is the dog's nearest living relative. Do ...

s and

cat The cat (''Felis catus'') is a domestic species of small carnivorous mammal. It is the only domesticated species in the family Felidae and is commonly referred to as the domestic cat or house cat to distinguish it from the wild members of ...

s. One product that has success in

mice A mouse ( : mice) is a small rodent. Characteristically, mice are known to have a pointed snout, small rounded ears, a body-length scaly tail, and a high breeding rate. The best known mouse species is the common house mouse (''Mus musculus' ...

rats Rats are various medium-sized, long-tailed rodents. Species of rats are found throughout the order Rodentia, but stereotypical rats are found in the genus ''Rattus''. Other rat genera include ''Neotoma'' (pack rats), ''Bandicota'' (bandicoot ...

, and dogs originally went by the name

Mouseopause ContraPest is the first U.S. EPA registered contraceptive pest control tool designed to reduce fertility in brown and black rats, developed by the U.S. biotechnology company SenesTech. It is a flavored liquid, designed to be attractive to, and ...

, but was approved for commercial use under the name

ContraPest ContraPest is the first U.S. EPA registered contraceptive pest control tool designed to reduce fertility in brown and black rats, developed by the U.S. biotechnology company SenesTech. It is a flavored liquid, designed to be attractive to, and ...

. Another project is five-year development and trial of several oral contraceptives for gray squirrels in the UK. The project has been supported by the UK's

Department for Environment, Food and Rural Affairs The Department for Environment, Food and Rural Affairs (Defra) is a department of His Majesty's Government responsible for environmental protection, food production and standards, agriculture, fisheries and rural communities in the United K ...

and aims to "provide an effective, less labour intensive, non-lethal method for managing grey squirrels" by January 2024.

Pigeons Columbidae () is a bird family consisting of doves and pigeons. It is the only family in the order Columbiformes. These are stout-bodied birds with short necks and short slender bills that in some species feature fleshy ceres. They primarily ...

have been a target for experimental contraceptives for decades. An oral contraceptive is in use for the control of

Canada geese The Canada goose (''Branta canadensis''), or Canadian goose, is a large wild goose with a black head and neck, white cheeks, white under its chin, and a brown body. It is native to the arctic and temperate regions of North America, and it is o ...

. A slow-release hormonal contraceptive implant for female

Tasmanian devil The Tasmanian devil (''Sarcophilus harrisii'') (palawa kani: purinina) is a carnivorous marsupial of the family Dasyuridae. Until recently, it was only found on the island state of Tasmania, but it has been reintroduced to New South Wales in ...

s is under development. While it may seem counter-intuitive to develop contraceptives for an endangered animal, their use is intended to promote the wild behaviour of mating freely, but without certain females over-contributing to the next generation, which "can have long-term genetic consequences for the

insurance population Translocation in wildlife conservation is the capture, transport and release or introduction of species, habitats or other ecological material (such as soil) from one location to another. It contrasts with reintroduction, a term which is gener ...

". Contraceptive trials in male devils showed that their

testosterone Testosterone is the primary sex hormone and anabolic steroid in males. In humans, testosterone plays a key role in the development of male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristi ...

increased, instead of decreasing as other male mammals' testosterone does.

References

External links

Botstiber Institute for Wildlife Fertility Control
{{DEFAULTSORT:Wildlife Contraceptive Animal welfare Birth control Theriogenology

Usage

See also

References

Further reading

External links