Habitat-specific locomotor variation among Chinese hook snout carp (Opsariichthys bidens) along a river.

ABSTRACT: The Wujiang River is a tributary of the upper Yangtze River that shows great variations in its flow regime and habitat condition. Dams have been built along the Wujiang River and have altered the habitats profoundly enough that they may give rise to reproductive isolation. To test whether the swimming performance and morphology of the Chinese hook snout carp (Opsariichthys bidens), varied among habitats and whether the possible differences had a genetic basis, we measured the steady and unsteady swimming performance, external body shape and genetic distance among fish collected from both the main and tributary streams of the upper, middle and lower reaches along the river. We also measured the routine energy expenditure (RMR), maximum metabolic rate (MMR), cost of transport (COT) and calcu

SUBMITTER: Fu SJ 

PROVIDER: S-EPMC3400668 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature