| Autor: |
Østbye, K., Næsje, T. F., Bernatchez, L., Sandlund, O. T., Hindar, K. |
| Předmět: |
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| Zdroj: |
Journal of Evolutionary Biology; May2005, Vol. 18 Issue 3, p683-702, 20p |
| Abstrakt: |
Combining morphological and genetic analysis, we compared patterns of diversification within and between morphs among sympatric European whitefish ( Coregonus lavaretus L.) populations in Lake Femund, Norway. Seven external populations, from potential colonization routes into Lake Femund were included. We found that deep-, shallow-, river- and bay spawning populations are distinct morphs in Lake Femund. Within morphs, populations range from being similar genetically (Fst = 0–0.005) among deep-spawning populations to being highly differentiated (Fst = 0.153) between bay-spawning populations. Between morphs, genetic differences ranged from a low (Fst = 0.008–0.022) between deep- and shallow-spawning populations to high difference (Fst = 0.125–0.143) between shallow- and bay-spawning populations. A higher proportion of molecular variance was seen among (3.9%) than within morphs (2.8%). The adaptive gene combinations behind the four morphs seem to have originated within the lake, although the lake could have been colonized from more than one source population. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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