240:– both the quantity and the quality of food are important. The population growth and decline of species depends on the amount of their food availability. The more available food, the more the population grows to meet it. The less nutritious food, the less fertile a species of reproductive age becomes. Snails, for example, cannot reproduce successfully in an environment low in calcium, no matter how much food there is because they need this mineral for shell growth.
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Fumigants are used to suffocate animals underground. While this type of population control method poses ethical concerns, the World
Society for the Protection of Animals (WSPA) believes it is necessary when human health or the safety of other animals are at risk. To ensure this control method is humane, WSPA states that it must be painless, achieve rapid unconsciousness followed by death, minimize animal fear and distress, and be reliable and irreversible.
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said to remove the oestrous cycles from the females, which initially attracts the males; without the oestrous cycles, males are not interested in mating. Another type of vaccine that is being used in deer is called porcine zona pellucida (PZP). PZP works by blocking sperm with antibodies on the deer's egg surface.
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live-ammunition shooting, and chemical euthanization. Lethal trapping, egg/roost site manipulation, live-ammunition shooting, and chemical euthanization are methods used to eliminate animal populations and prevent reproduction, whereas live trapping captures species to remove them from a specific area.
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is used to regulate populations of animals in the wild and halt reproduction. For example, vaccines are currently being used in deer populations. GonaCon, which was developed by the US Department of
Agriculture, encourages the production of antibodies in the sex drive hormones. Specifically, it is
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Direct human impacts are not the only ways humans can control animal populations. Often times, humans are indirectly controlling animal populations, in other words, the humans are not aware that their actions are controlling animal populations. For example, new infrastructure and roads can lead to
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refers to the use of chemicals to cause an easy or painless death and is divided into three categories: acute toxins, anticoagulants and decalcifiers, and fumigants. Acute toxins only require a single dose to kill animals, whereas anticoagulants and decalcifiers require numerous doses over time.
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is a method used to capture a variety of animals. From small animals to large animals, this type of population control method uses barrel traps, restraining snares, and leg-hold devices. Just like the lethal trapping method, this tactic also needs to be regularly monitored to ensure no ethical
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is a method used to kill animals. This type of method is usually monitored in order to ensure no ethical or public concerns arise. While this tactic is most commonly used on small animals, populations of larger animals such as beavers and foxes are also controlled with this type of method.
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is the act of preventing reproduction in the wild, which subsequently decreases populations. An example of this includes the maintenance of deer populations with the use of vaccines. Other methods to maintain populations include lethal trapping, live trapping, egg/roost site manipulation,
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is used on birds to prevent them from nesting in prohibited areas. Water spray is popular in urban and agricultural areas as it uses sprinklers to emit surfactants. The surfactants then control bird populations by killing and preventing future birds from nesting.
252:– other organisms may require the same resources from the environment, and so reduce the growth of a population. For instance, all plants compete for light. Competition for territory and for mates can drastically reduce the growth of individual organisms.
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animals being displaced from their natural habitat. Their new habitats that they are forced to move to may not provide the same necessities to them that they require for survival. This will result in a decreasing population as a result of human actions.
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to prevent reproduction, culling individuals or the use of pesticides. Population control plays an important role in wildlife populations. Based on the species being dealt with, there are numerous ways populations of the wild are controlled.
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Population control can be influenced by a variety of factors. Humans can greatly influence the size of animal populations they directly interact with. It is, for example, relatively common (and sometimes even a legal requirement) to
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of a number of diseases and therefore pose a risk to humans. Efforts are also continuously being made to control wildlife populations near airports. Specifically, control measures have been approved for bald eagles and deer.
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When preventing reproduction fails to control populations, methods such as lethal trapping, live trapping, egg/roost site manipulation, live-ammunition shooting, and chemical euthanization are used to maintain populations.
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uses firearms to eliminate animals such as birds and bears. Because this type of population control method is restricted in many parts of the world, it is only to be used when other control methods have failed.
246:– as a prey population becomes larger, it becomes easier for predators to find prey. If the number of predators suddenly falls, the prey species might increase in number extremely quickly.
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While many abiotic and biotic factors influence population control, humans are notably influential against animal populations. Whether humans need to hunt animals for food, exterminate a
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Population control also plays a significant role in managing and controlling invasive species so that they are eliminated before becoming abundant and causing any ecological harm.
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154:. 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
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229:, or manipulation of the reproductive capability. The growth of a population may be limited by environmental factors such as food supply or
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concerns arise, as well as reduce animal distress. Specifically, this type of population control method is popular with capturing birds.
218:. Various humans activities (e.g. hunting, farming, fishing, industrialization, and urbanization) all impact various animal populations.
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population, including 54 cats and 118 dogs that were put to death due to a widespread disease outbreak that spread among the animals.
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This article is about population control in non-humans. For the practice among humans, see
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dogs. Spaying – removing the ovaries and uterus of a female animal – medical term =
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Lenker, George (2002-02-17). "Goal of Spay Day USA to control animal population".
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871:"Introduction: Population Biology, Evolution, and Control of Invasive Species"
273:– Higher temperatures speed up enzyme-catalyzed reactions and increase growth.
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838:"Methods for the euthanasia of dogs and cats: comparison and recommendations"
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755:, Duke University, Durham, NC, USA;2Cornell University, Ithaca, NY, USA
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is another option available to control animal populations. The annual
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is often used as a final resort to controlling animal populations. In
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214:. Neutering - removing the testes of a male animal – medical term =
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Lemoine, Debra (2009-08-03). "Animal
Control facility cleans up".
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Conservation biology : an evolutionary-ecological perspective
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233:. The main biotic factors that affect population growth include:
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299:– tissue growth can be reduced by the presence of, for example,
293:. light may also control breeding cycles in animals and plants.
843:. World Society for the Protection of Animals. Archived from
547:. Michael E. Soulé, Bruce A. Wilcox. Sunderland, Mass. 1980.
487:"Recovery from the most profound mass extinction of all time"
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is the practice of artificially maintaining the size of any
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Read "Airport
Wildlife Population Management" at NAP.edu
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744:"Human population numbers as a function of food supply"
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Proceedings of the Royal
Society B: Biological Sciences
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to promote the neutering of pets, especially those in
331:, the parish performed mass euthanasia on the entire
75:. Unsourced material may be challenged and removed.
933:Juan Carlos Senar, Montalovo Thomas, Jordi Pascual
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813:"Euthanasia - an overview | ScienceDirect Topics"
40:Population Control: Real Costs, Illusory Benefits
27:Practice of controlling size of animal population
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869:Allendorf, Fred W.; Lundquist, Laura L. (2003).
769:"Morgan Freeman on the 'Tyranny of Agriculture'"
708:Defusco, Russell P.; Unangst, Edward T. (2013).
485:Sahney, Sarda; Benton, Michael J (2008-04-07).
353:, so that the population remains controllable.
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303:, and reproductive success may be affected by
266:factors affecting population growth include:
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279:– affects the rate of energy production by
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135:Learn how and when to remove this message
38:. For the book by Steven W. Mosher, see
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187:Factors influencing population control
771:. Population Media. 11 February 2014.
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34:. For the Statik Selektah album, see
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73:adding citations to reliable sources
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594:Soulé, Michael E. (December 1985).
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596:"What Is Conservation Biology?"
221:Population control may involve
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416:Several efforts have been made
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345:event was established by the
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357:Wildlife population control
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162:, which is referred to as
36:Population Control (album)
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32:Human population planning
18:Animal population control
394:Live-ammunition shooting
193:Lotka–Volterra equations
158:from excessive rates of
965:Control of demographics
668:Magazine, Smithsonian.
347:Doris Day Animal League
503:10.1098/rspb.2007.1370
401:Chemical euthanization
362:Wildlife contraception
180:Wildlife contraception
817:www.sciencedirect.com
579:) CS1 maint: others (
297:Toxins and pollutants
875:Conservation Biology
674:Smithsonian Magazine
164:conservation biology
84:"Population control"
69:improve this article
751:Russel Hopfenburg,
466:Wildlife management
277:Oxygen availability
970:Population density
457:Trap–neuter–return
287:Light availability
212:ovariohysterectomy
148:Population control
729:978-0-309-22385-0
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271:Temperature
250:Competitors
216:orchiectomy
944:Categories
822:2022-03-01
799:Union-News
679:2022-03-25
670:"Oh Deer!"
649:2022-03-25
600:BioScience
472:References
461:feral cats
305:pollutants
262:Important
191:See also:
160:extinction
152:population
125:March 2013
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571:cite book
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339:Neutering
256:Parasites
244:Predators
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175:neutering
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437:Trapping
431:See also
411:Examples
309:estrogen
307:such as
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