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Has habitat heterogeneity promoted phenotypic and ecological sub‐structuring among a Coregonus lavaretus population in a large Scottish lake?
Author(s) -
Etheridge E. C.,
Harrod C.,
Bean C. W.,
Adams C. E.
Publication year - 2010
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2010.02827.x
Subject(s) - coregonus lavaretus , biology , ecology , sympatric speciation , population , habitat , fishery , fish <actinopterygii> , demography , sociology
Differences in stable‐isotope values, morphology and ecology in whitefish Coregonus lavaretus were investigated between the three basins of Loch Lomond. The results are discussed with reference to a genetic investigation to elucidate any substructuring or spawning site fidelity. Foraging fidelity between basins of Loch Lomond was indicated by δ 13 C and δ 15 N values of C. lavaretus muscle tissue. There was, however, no evidence of the existence of sympatric morphs in the C. lavaretus population. A previous report of two C. lavaretus ‘species’ in Loch Lomond probably reflects natural variation between individuals within a single mixed population.