Population control - wikipedia Population control This article is about population control in non-humans. For the practice among humans, see Human population planning. Population control is the practice of artificially altering the size of any population. It typically 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 excessive rates of extinction, which is referred to as conservation biology. Contents 1 Factors influencing population control 2 Methods for active population control 3 Examples 4 See also 5 References Factors influencing population control This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( March 2013 ) 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 spay or neuter dogs. Spaying -- removing the ovaries and uterus of a female animal -- medical term = ovariohysterectomy. Neutering - removing the testes of a male animal -- medical term = orchiectomy. Various humans activities ( e.g. hunting, farming, fishing, industrialization, and urbanization ) all impact various animal populations. Population control may involve culling, translocation, or manipulation of the reproductive capability. The growth of a population may be limited by environmental factors such as food supply or predation. The main biotic factors that affect population growth include : Food -- both the quantity and the quality of food are important. Snails, for example, can not reproduce successfully in an environment low in calcium, no matter how much food there is because they need this mineral for shell growth. Predators -- 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. Competitors -- other organisms may require the same resources from the environment, and so reduce the growth of a population. For example, all plants compete for light. Competition for territory and for mates can drastically reduce the growth of individual organisms. Parasites -- These may cause disease, and slow down the growth and reproductive rate of organisms within a population. Important Abiotic factors affecting population growth include : Temperature -- Higher temperatures speed up enzyme - catalyzed reactions and increase growth. Oxygen availability -- affects the rate of energy production by respiration. Light availability -- for photosynthesis. light may also control breeding cycles in animals and plants. Toxins and pollutants -- tissue growth can be reduced by the presence of, for example, sulphur dioxide, and reproductive success may be affected by pollutants such as estrogen like substances. Methods for active population control Animal euthanasia is often used as a final resort to controlling animal populations. In Tangipahoa Parish, Louisiana, the parish performed mass euthanasia on the entire animal shelter population, including 54 cats and 118 dogs that were put to death due to a widespread disease outbreak that spread among the animals. Neutering is another option available to control animal populations. The annual Spay Day USA event was established by the Doris Day Animal League to promote the neutering of pets, especially those in animal shelters, so that the population remains controllable. Examples Several efforts have been made to control the population of ticks, which act as vectors of a number of diseases and therefore pose a risk to humans. See also Animal trapping Conservation biology Culling Human population planning Hunting Malthusianism Overpopulation in wild animals Sterilization ( surgical procedure ) Trap - neuter - return for feral cats Wildlife contraceptives Wildlife management References Jump up ^ Lemoine, Debra ( 2009 - 08 - 03 ). `` Animal Control facility cleans up ''. The Advocate. Jump up ^ Lenker, George ( 2002 - 02 - 17 ). `` Goal of Spay Day USA to control animal population ''. Union - News. Retrieved from `` https://en.wikipedia.org/w/index.php?title=Population_control&oldid=841888675 '' Categories : Animal culling Birth control Population density Hidden categories : Articles needing additional references from March 2013 All articles needing additional references Talk Contents About Wikipedia Tiếng Việt Edit links This page was last edited on 18 May 2018, at 18 : 40. About Wikipedia

Question: the main aspect of population management is to control population growth why
Answer: remains manageable