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Animal captivity is the confinement of domestic and wild animals. [1] More specifically, animals that are held by humans and prevented from escaping are said to be in captivity . [ 2 ] The term animal captivity is usually applied to wild animals that are held in confinement, but this term may also be used generally to describe the keeping of ...
USFWS staff with two red wolf pups bred in captivity. Captive breeding, also known as captive propagation, is the process of keeping plants or animals in controlled environments, such as wildlife reserves, zoos, botanic gardens, and other conservation facilities.
Selection favors different traits in captive populations than it does in wild populations, so this may result in adaptations that are beneficial in captivity but are deleterious in the wild. [10] This reduces the success of re-introductions, so it is important to manage captive populations in order to reduce adaptations to captivity.
The genetic basis of this adaptation is selection of rare, recessive alleles that are deleterious in the wild but preferred in captivity. [11] Consequently, animals adapted to captivity show reduced stress tolerance, increased tameness, and loss of local adaptations. [30] Plants also can show adaptations to captivity through changes in drought ...
In small systems, the fish are often fed commercial fish food, and their waste products can help fertilize the fields. In larger ponds, the pond grows water plants and algae as fish food. Some of the most successful ponds grow introduced strains of plants, as well as introduced strains of fish. [32] Control of water quality is crucial.
Kiska, a young female orca, was captured in 1978 off the Iceland coast and taken to Marineland Canada, an aquarium and amusement park. Orcas are social animals that live in family pods with up to ...
In 2016, aquaculture was the source of 96.5 percent by volume of the total 31.2 million tonnes of wild-collected and cultivated aquatic plants combined. Global production of farmed aquatic plants, overwhelmingly dominated by seaweeds, grew in output volume from 13.5 million tonnes in 1995 to just over 30 million tonnes in 2016. [24]
Filled with live plants, substrates, and glimmering schools of fish, a perfectly curated aquarium is an awe-inspiring art form. But the best aquarium pets that aren’t fish prove that our finned ...
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