Temperature surpasses the effects of velocity and turbulence on swimming performance of two invasive non-native fish species.

ABSTRACT: Global climate change continues to impact fish habitat quality and biodiversity, especially in regard to the dynamics of invasive non-native species. Using individual aquaria and an open channel flume, this study evaluated the effects of water temperature, flow velocity and turbulence interactions on swimming performance of two lentic, invasive non-native fish in the UK, pumpkinseed (Lepomis gibbosus) and topmouth gudgeon (Pseudorasbora parva). Burst and sustained swimming tests were conducted at 15, 20 and 25°C. Acoustic Doppler velocimetry was used to measure the flume hydrodynamic flow characteristics. Both L. gibbosus and P. parva occupied the near-bed regions of the flume, conserving energy and seeking refuge in the low mean velocities flow areas despite th

SUBMITTER: Muhawenimana V 

PROVIDER: S-EPMC8074586 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature