Influence of maximum water temperature on occurrence of Lahontan cutthroat trout within streams

J. Dunham; R. Schroeter; B. Rieman

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Influence of maximum water temperature on occurrence of Lahontan cutthroat trout within streams

Informally Refereed

Authors:

J. Dunham, R. Schroeter, B. Rieman

Year:

2003

Type:

Miscellaneous Publication

Station:

Rocky Mountain Research Station

Source:

North American Journal of Fisheries Management 23:1042-1049.

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Abstract

We measured water temperature at 87 sites in six streams in two different years (1998 and 1999) to test for association with the occurrence of Lahontan cutthroat trout Oncorhynchus clarki henshawi. Because laboratory studies suggest that Lahontan cutthroat trout begin to show signs of acute stress at warm (>22°C) temperatures, we focused on the maximum daily temperature. The maximum daily temperature associated with the occurrence of Lahontan cutthroat trout ranged from 18.9°C to 28.5°C. Occurrence was more likely at colder (

Keywords

cutthroat trout, Oncorhynchus clarki henshawi, maximum water temperature, thermal tolerance

Citation

Dunham, J., R. Schroeter and B. Rieman. 2003. Influence of maximum water temperature on occurrence of Lahontan cutthroat trout within streams. North American Journal of Fisheries Management 23:1042-1049.