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| Content Provider | Springer Nature Link |
|---|---|
| Author | Klemetsen, A. |
| Copyright Year | 2013 |
| Abstract | In the search for the most variable non-human vertebrate on Earth, intraspecific variation of ten variable traits was compared among ten highly variable species. Mammals, birds and many reptiles, amphibians and fishes were excluded because most of the variation is among, and not within species. The focus was on northern fishes, where high intraspecific variation is well documented. The ten selected species were European whitefish Coregonus lavaretus, chinook salmon Oncorhyncus tshawytscha, sockeye salmon O. nerka, rainbow trout O. mykiss, atlantic salmon Salmo salar, brown trout S. trutta, arctic charr Salvelinus alpinus, brook charr S. fontinalis, dolly varden charr S. malma and threespine stickleback Gasterosteus aculeatus. Variation included not only size and phenotype, but also ecology, behaviour and life history. The traits were geographic range, migration, habitat, adult size, colour, body form, polymorphism, diet, reproduction and genetics. Arctic charr came on top in the final ranking, followed by dolly varden charr and rainbow trout. The two least variable were chinook salmon and threespine stickleback. It is proposed that arctic charr, which is also the northernmost fish on Earth, has evolved its unique variability in range, size, phenotype, ecology and life history by adapting to the extreme and highly unpredictable ecological conditions of arctic and other northern lakes for many glacial periods. |
| Starting Page | 781 |
| Ending Page | 791 |
| Page Count | 11 |
| File Format | |
| ISSN | 00329452 |
| Journal | Journal of Ichthyology |
| Volume Number | 53 |
| Issue Number | 10 |
| e-ISSN | 15556425 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2013-12-28 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | intraspecific vertebrate variation northern fishes postglacial lakes Zoology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Aquatic Science |
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