Feeding ecology of two planktonic sculpins, Comephorus baicalensis and Comephorus dybowskii (Comephoridae), in Lake Baikal
- 103 Downloads
Planktonic sculpins (Comephorus baicalensis and Comephorus dybowskii) are endemic to Lake Baikal, and their migration behavior is characterized by their strange movements, which occur only vertically. We investigated their detailed food sources at each growth stage by stable isotope analyses in combination with stomach content analysis. At all growth stages, both fishes and amphipods were the main diet for C. baicalensis, whereas amphipods alone were the main diet for C. dybowskii. Our results indicate that the relationship between the two species shifts from a competitive interaction to a predator–prey interaction with the growth stages of C. baicalensis.
Key wordsLake Baikal Planktonic sculpin Stable isotope Comephorus Diet
Unable to display preview. Download preview PDF.
- Afanasyeva, EL 1977Biology of the Baikal Epishura (in Russian)NaukaNovosibirskGoogle Scholar
- Carpenter, SR, Kitchell, JF 1993The trophic cascade in lakesCambridge University PressCambridgeGoogle Scholar
- Kozhov, M 1963Lake Baikal and its lifeJunkRussiaGoogle Scholar
- Sideleva, VG 2003Resource of cottoid fishes and their role in the trophic system of the lakeSideleva, VG eds. The endemic fishes of Lake BaikalBackhuysLeiden133150Google Scholar
- Volrman, IB, Kontorin, VV 1983Biological association of fishes and seal in Baikal (in Russian)NaukaNovosibirskGoogle Scholar