title: Has habitat heterogeneity promoted phenotypic and ecological sub-structuring among a Coregonus lavaretus population in a large Scottish lake?
abstract: 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 δ¹³C and δ¹⁵N 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.
authors.affiliation: Scottish Centre for Ecology and the Natural Environment, Institute of Biomedical and Life Sciences, Glasgow University, Rowardennan, Glasgow G63 0AW, UK. mail@gallowayfisheriestrust.org
authors.forename: E C
authors.initials: EC
authors.lastname: Etheridge
authors.forename: C
authors.initials: C
authors.lastname: Harrod
authors.forename: C W
authors.initials: CW
authors.lastname: Bean
authors.forename: C E
authors.initials: CE
authors.lastname: Adams
mesh_terms: D000818:Animals; D002247:Carbon Isotopes / Q000378:metabolism; D017753:Ecosystem; D005247:Feeding Behavior; D005260:Female; D006257:Head / Q000033:anatomy & histology; D008297:Male; D018895:Microsatellite Repeats; D009587:Nitrogen Isotopes / Q000378:metabolism; D010641:Phenotype; D012487:Salmonidae / Q000033:anatomy & histology / Q000502:physiology*; D012606:Scotland
chemical_list: D002247:Carbon Isotopes; D009587:Nitrogen Isotopes