Domestication - Genetic Pollution

Genetic Pollution

Animals of domestic origin and feral ones sometimes can produce fertile hybrids with native, wild animals which leads to genetic pollution in the naturally evolved wild gene pools, many times threatening rare species with extinction. Cases include the mallard duck, wildcat, wild boar, the rock dove or pigeon, the Red Junglefowl (Gallus gallus) (ancestor of all chickens), carp, and more recently salmon. Another example is the dingo, itself an early feral dog, which hybridizes with dogs of European origin. On the other hand, genetic pollution seems not to be noticed for rabbits. There is much debate over the degree to which feral hybridization compromises the purity of a wild species. In the case of the mallard, for example, some claim there are no populations which are completely free of any domestic ancestor.

Read more about this topic:  Domestication

Other articles related to "genetic pollution, genetic":

pollution" class="article_title_2">Gene Flow Between Species - Genetic Pollution
... can be threatened with extinction through genetic pollution, potentially causing uncontrolled hybridization, introgression and genetic swamping ...
Introduced Birds - Genetic Pollution
... wild species can be seriously threatened with extinction through the process of genetic pollution i.e ... uncontrolled hybridization, introgression and genetic swamping which leads to homogenization or replacement of local genotypes as a result of either a numerical and/or fitness advantage of introduced plant ...
Genetic Pollution - Controversial Term
... Whether genetic pollution or similar terms, such as "genetic deterioration", "genetic swamping", "genetic takeover" and "genetic aggression", are an ... gene flow from invasive species be termed genetic mixing since " "Mixing" need not be value-laden, and we use it here to denote mixing of gene pools whether or not associated with a decline in ... such as Patrick Moore, an ex-member and cofounder of Greenpeace, questions if the term genetic pollution is more political than scientific ...
Risks To Food Security - Hybridization, Genetic Engineering and Loss of Biodiversity
... intentional and unintentional cross-pollination and crossbreeding (genetic pollution), formerly huge gene pools of various wild and indigenous breeds have collapsed causing widespread genetic ... This has resulted in loss of genetic diversity and biodiversity as a whole ... A genetically modified organism (GMO) is an organism whose genetic material has been altered using the genetic engineering techniques generally known as recombinant DNA technology ...
Invasive Plant Species - Impact - Biodiversity - Genetic Pollution
... Native species can be threatened with extinction through the process of genetic pollution ... Genetic pollution is unintentional hybridization and introgression, which leads to homogenization or replacement of local genotypes as a result of either a numerical or fitness ... Genetic pollution can operate either through introduction or through habitat modification, bringing previously isolated species into contact ...

Famous quotes containing the words pollution and/or genetic:

    Like the effects of industrial pollution ... the AIDS crisis is evidence of a world in which nothing important is regional, local, limited; in which everything that can circulate does, and every problem is, or is destined to become, worldwide.
    Susan Sontag (b. 1933)

    We cannot think of a legitimate argument why ... whites and blacks need be affected by the knowledge that an aggregate difference in measured intelligence is genetic instead of environmental.... Given a chance, each clan ... will encounter the world with confidence in its own worth and, most importantly, will be unconcerned about comparing its accomplishments line-by-line with those of any other clan. This is wise ethnocentricism.
    Richard Herrnstein (1930–1994)