Related Experiment Video
Updated: Jun 6, 2026

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
Published on: July 20, 2017
Has habitat heterogeneity promoted phenotypic and ecological sub-structuring among a Coregonus lavaretus population
E C Etheridge1, C Harrod, C W Bean
1Scottish Centre for Ecology and the Natural Environment, Institute of Biomedical and Life Sciences, Glasgow University, Rowardennan, Glasgow G63 0AW, UK. mail@gallowayfisheriestrust.org
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.
Related Concept Videos
Speciation Rates
Freshwater Microbial Ecology
Conservation of Small Populations
Hybrid Zones
Osmoregulation in Fishes
Formation of Species

