Genetic evidence challenges the native status of a threatened freshwater fish (Carassius carassius ) in England

Jeffries, Daniel L., Copp, Gordon H., Maes, Gregory E., Lawson Handley, Lori, Sayer, Carl D., and Hänfling, Bernd (2017) Genetic evidence challenges the native status of a threatened freshwater fish (Carassius carassius ) in England. Ecology and Evolution, 7 (7). pp. 2871-2882.

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A fundamental consideration for the conservation of a species is the extent of its native range, that is, regions naturally colonized. However, both natural processes and human-mediated introductions can drive species distribution shifts. Ruling out the human-mediated introduction of a species into a given region is vital for its conservation, but remains a significant challenge in most cases. The crucian carp Carassius carassius (L.) is a threatened freshwater fish thought to be native to much of Europe. However, its native status in England is based only on anecdotal evidence. Here, we devise an approach that can be used to empirically test the native status of English fauna. We use this approach, along with 13 microsatellite loci, population structure analyses, and Approximate Bayesian Computation (ABC), to test hypotheses for the origins of C. carassius in England. Contrary to the current consensus, we find strong support for the human-mediated introduction of C. carassius into England during the 15th century. This result stimulates an interesting and timely debate surrounding motivations for the conservation of species. We discuss this topic, and the potential for continued conservation of C. carassius in England, despite its non-native origins.

Item ID: 51054
Item Type: Article (Research - C1)
ISSN: 2045-7758
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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. © 2017 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.

Funders: Fisheries Society of the British Isles (FSBI), Centre for Environment, Fisheries & Aquaculture Science (CEFAS), Flemish Agency for Nature and Forests (FANF)
Projects and Grants: FANF B&G/22/2003
Date Deposited: 10 Oct 2017 01:22
FoR Codes: 31 BIOLOGICAL SCIENCES > 3105 Genetics > 310599 Genetics not elsewhere classified @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960807 Fresh, Ground and Surface Water Flora, Fauna and Biodiversity @ 100%
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