Benthic animals and foods eaten by brook trout in Archuleta Creek, Colorado

On each of four dates in summer 1961, approximately 100 brook trout (Salvelinus fontinalis) were taken by flyrod from Archuleta Creek, a small mountain stream in south-central Colorado. Simultaneously benthic animals were sampled with a Surber sampler at three stations. Four habitats were sampled at...

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Bibliographic Details
Published in:Hydrobiologia 1966-01, Vol.27 (1-2), p.227-237
Main Authors: Reed, Edward B., Bear, George
Format: Article
Language:English
Subjects:
Freshwater
Salvelinus fontinalis
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Summary:On each of four dates in summer 1961, approximately 100 brook trout (Salvelinus fontinalis) were taken by flyrod from Archuleta Creek, a small mountain stream in south-central Colorado. Simultaneously benthic animals were sampled with a Surber sampler at three stations. Four habitats were sampled at each station. The riffle habitat yielded the greatest weight of bottom organisms, 50.05 grams (about 3 to 4 times as much as the head- and foot-pool areas respectively); mid-pools were the poorest habitat in weight of organisms, 3.89 grams. Approximately three fourths of the trout stomachs contained terrestrial insects which composed about 45 per cent of the volume of the stomach contents. Thus nearly one half of the trouts' support came from outside the aquatic ecosystem.
ISSN:0018-8158
1573-5117
DOI:10.1007/BF00161498