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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 excessive rates of extinction, which is referred to as conservation biology. 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 pest, or reduce competition for resources, managing populations involves providing nourishment, or neutering 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. Wildlife contraception is the act of preventing reproduction in the wild, which subsequently decreases populations. An example of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Population
Population is a set of humans or other organisms in a given region or area. Governments conduct a census to quantify the resident population size within a given jurisdiction. The term is also applied to non-human animals, microorganisms, and plants, and has specific uses within such fields as ecology and genetics. Etymology The word ''population'' is derived from the Late Latin ''populatio'' (a people, a multitude), which itself is derived from the Latin word ''populus'' (a people). Use of the term Social sciences In sociology and population geography, population refers to a group of human beings with some predefined feature in common, such as location, Race (human categorization), race, ethnicity, nationality, or religion. Ecology In ecology, a population is a group of organisms of the same species which inhabit the same geographical area and are capable of Sexual reproduction, interbreeding. The area of a sexual population is the area where interbreeding is possi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphur Dioxide
Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a colorless gas with a pungent smell that is responsible for the odor of burnt matches. It is released naturally by volcanic activity and is produced as a by-product of metals refining and the burning of sulfur- bearing fossil fuels. Sulfur dioxide is somewhat toxic to humans, although only when inhaled in relatively large quantities for a period of several minutes or more. It was known to medieval alchemists as "volatile spirit of sulfur". Structure and bonding SO2 is a bent molecule with ''C''2v symmetry point group. A valence bond theory approach considering just ''s'' and ''p'' orbitals would describe the bonding in terms of resonance between two resonance structures. The sulfur–oxygen bond has a bond order of 1.5. There is support for this simple approach that does not invoke ''d'' orbital participation. In terms of el ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Culling
Culling is the process of segregating organisms from a group according to desired or undesired characteristics. In animal breeding, it is removing or segregating animals from a breeding stock based on a specific trait. This is done to exaggerate desirable characteristics, or to remove undesirable characteristics by altering the genetic makeup of the population. For livestock and wildlife, culling often refers to killing removed animals based on their characteristics, such as their sex or species membership, or as a means of preventing infectious disease transmission. In fruits and vegetables, culling is the sorting or segregation of fresh harvested produce into marketable lots, with the non-marketable lots being discarded or diverted into food processing or non-food processing activities. This usually happens at collection centres located at, or close to farms. Etymology The word ''cull'' comes from the Latin verb , meaning "to gather". The term can be applied broadly to m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vector (epidemiology)
In epidemiology, a disease vector is any living agent that carries and transmits an infectious pathogen such as a parasite or microbe, to another living organism. Agents regarded as vectors are mostly blood-sucking (Hematophagy, hematophagous) arthropods such as mosquitoes. The first major discovery of a disease vector came from Ronald Ross in 1897, who discovered the malaria pathogen when he dissected the stomach tissue of a mosquito. Arthropods Arthropods form a major group of pathogen vectors with mosquitoes, Fly, flies, Sandfly, sand flies, lice, fleas, ticks, and mites transmitting a huge number of pathogens. Many such vectors are haematophagous, which feed on blood at some or all stages of their lives. When the insects and ticks feed on blood, the pathogen enters the blood stream of the host. This can happen in different ways. The ''Anopheles'' mosquito, a vector for malaria, filariasis, and various arthropod-borne-viruses (arboviruses), inserts its delicate mouthpart under ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tick
Ticks are parasitic arachnids of the order Ixodida. They are part of the mite superorder Parasitiformes. Adult ticks are approximately 3 to 5 mm in length depending on age, sex, and species, but can become larger when engorged. Ticks are external parasites, living by feeding on the blood of mammals, birds, and sometimes reptiles and amphibians. The timing of the origin of ticks is uncertain, though the oldest known tick fossils are around 100 million years old, and come from the Cretaceous period. Ticks are widely distributed around the world, especially in warm, humid climates. Ticks belong to two major families: the Ixodidae, or hard ticks, and the Argasidae, or soft ticks. '' Nuttalliella'', a genus of tick from southern Africa, is the only member of the family Nuttalliellidae, and represents the most primitive living lineage of ticks. Adults have ovoid/pear-shaped bodies (idiosomas) which become engorged with blood when they feed, and eight legs. Their cephalotho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildlife Contraception
Wildlife refers to undomesticated animals and uncultivated plant species which can exist in their natural habitat, 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 for sport. Wildlife can be found in all ecosystems. Deserts, plains, grasslands, woodlands, forests, and other areas including the most developed urban areas, all have distinct forms of wildlife. While the term in popular culture usually refers to animals that are untouched by human factors, most scientists agree that much wildlife is affected by human activities. Some wildlife threaten human safety, health, property and quality of life. However, many wild animals, even the dangerous ones, have value to human beings. This value might be economic, educational, or emotional in nature. Humans have historically tended to separate civilization from wildlife in a number of ways, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doris Day Animal League
The Doris Day Animal League was an animal advocacy group based in Washington, D.C. It established the annual observance Spay Day USA in 1994, which the group uses to bring attention to the pet overpopulation A pet, or companion animal, is an animal kept primarily for a person's company or entertainment rather than as a working animal, livestock, or a laboratory animal. Popular pets are often considered to have attractive/ cute appearances, int ... problem in the United States. In 2021, the Doris Day Animal League (DDAL) merged with the Humane Society Legislative Fund. References External links Official websiteGuide to the Doris Day Animal League Records 1978-2006 Animal welfare organizations based in the United States Doris Day 1994 establishments in Washington, D.C. {{Veterinary-med-stub Non-profit organizations based in Washington, D.C. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spay Day USA
World Spay Day advocates spaying, or neutering, advocating it "as a proven means of saving the lives of companion animals, community (feral and stray) cats, and street dogs who might otherwise be put down in a shelter or killed on the street." It is an event held on the last Tuesday in February each year. History The event first started as Spay Day USA, an annual event created by Doris Day and the Doris Day Animal League (DDAL) in 1995, to promote spays and neuters across the country to help the problem of homeless pets. After the DDAL's merger with the Humane Society of the United States (HSUS) in 2006, the tradition continued under the auspices of the HSUS as World Spay Day. In 2002, the event's goal was to spay and neuter 200,000 pets across the United States. The Doris Day Animal Foundation (DDAF) reports that since 2008, they have granted HSUS $385,000 for spays and neuters of 9,421 animals in 39 states: 6388 cats, 3007 dogs, and 26 rabbits. Many other organizations and indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutering
Neutering, from the Latin ('of neither sex'), is the removal of a non-human animal's sex organ, reproductive organ, either all of it or a considerably large part. The male-specific term is castration, while spaying is usually reserved for female animals. Colloquially, both terms are often referred to as fixing. In male horses, castrating is referred to as gelding. An animal that has not been neutered is sometimes referred to as entire or intact. Often the term ''neuter[ing]'' is used to specifically mean castration, e.g. in phrases like "spay and neuter". Neutering is the most common method for animal Sterilization (medicine), sterilization. humane society, Humane societies, animal shelters, and rescue groups urge pet owners to have their pets neutered to prevent the births of unwanted Litter (zoology), litters, which contribute to the Overpopulation of domestic pets, overpopulation of unwanted animals in the rescue system. Many countries require that all adopted cats and dogs be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Shelter
An animal shelter or pound is a place where stray, lost, abandoned or surrendered animals – mostly dogs and cats – are housed. The word "pound" has its origins in the animal pounds of the agricultural communities, where stray livestock would be penned or impounded until they were claimed by their owners. While no-kill shelters exist, it is sometimes policy to Animal euthanasia, euthanize animals that are not claimed quickly enough by a previous or new owner. In Europe, of the 30 countries included in a survey, all but six (Austria, the Czech Republic, Germany, Greece, Italy and Poland) permitted euthanizing non-adopted animals. Terminology The shelter industry has terminology for their unique field of work, and though there are no exact standards for consistent definitions, many words have meanings based on their usage. ''Animal control service, Animal control'' has the municipal function of picking up stray dogs and cats, and investigating reports of animal abuse, d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tangipahoa Parish, Louisiana
Tangipahoa Parish () is a parish located on the southeastern border of the U.S. state of Louisiana. As of the 2020 census, the population was 133,157. The parish seat is Amite City, while the largest city is Hammond. Southeastern Louisiana University is located in Hammond. Lake Pontchartrain borders the southeastern side of the parish. The name ''Tangipahoa'' comes from an Acolapissa word meaning "ear of corn" or "those who gather corn." The parish was organized in 1869 during the Reconstruction era. Tangipahoa Parish comprises the Hammond, LA Metropolitan Statistical Area, which is also included in the Baton Rouge–Hammond, LA Combined Statistical Area. It is one of what are called the Florida Parishes, at one time part of West Florida. History Tangipahoa Parish was created by Louisiana Act 85 on March 6, 1869, during the Reconstruction era. The parish was assembled from territories taken from Livingston Parish, St. Helena Parish, St. Tammany Parish, and Washingt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
