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Morphological divergence and origin of sympatric populations of European whitefish ( Coregonus lavaretus L.) in Lake Femund, Norway
Author(s) -
ØSTBYE K.,
NÆSJE T. F.,
BERNATCHEZ L.,
SANDLUND O. T.,
HINDAR K.
Publication year - 2005
Publication title -
journal of evolutionary biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.289
H-Index - 128
eISSN - 1420-9101
pISSN - 1010-061X
DOI - 10.1111/j.1420-9101.2004.00844.x
Subject(s) - biology , coregonus lavaretus , sympatric speciation , coregonus , bay , ecology , range (aeronautics) , genetic divergence , sympatry , population , allopatric speciation , zoology , fishery , fish <actinopterygii> , genetic diversity , oceanography , materials science , demography , sociology , composite material , geology
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.