Effects of an introduced piscivorous fish on native benthic fishes in a coastal river

Jason L. White; Bret C. Harvey

doi:10.1046/j.1365-2427.2001.00724.x

Treesearch

Effects of an introduced piscivorous fish on native benthic fishes in a coastal river

Informally Refereed

Authors:

Jason L. White, Bret C. Harvey

Year:

2001

Type:

Miscellaneous Publication

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.1046/j.1365-2427.2001.00724.x

Source:

Freshwater Biology 46(7): 987-995.

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Abstract

We used field surveys to compare the density and mesohabitat-scale distribution of the native coastrange sculpin (Cottus aleuticus) and the prickly sculpin (C. asper) in coastal rivers in northwestern California, U.S.A., with and without an introduced piscivorous fish, the Sacramento pikeminnow, Ptychocheilus grandis. We also measured mortality of tethered prickly sculpin in a field experiment including river, habitat type (pools versus riffles) and cover as factors

Keywords

PSW4351, sculpin, cottidae, field experiment, introduced species, predation, Ptychocheilus grandi

Citation

White, Jason L.; Harvey, Bret C. 2001. Effects of an introduced piscivorous fish on native benthic fishes in a coastal river. Freshwater Biology 46(7): 987-995.