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Responses of Brook Trout and Creek Chubs to Turbidity
Author(s) -
Gradall Kenneth S.,
Swenson William A.
Publication year - 1982
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1982)111<392:robtac>2.0.co;2
Subject(s) - trout , fontinalis , turbidity , fishery , salvelinus , environmental science , biology , ecology , fish <actinopterygii>
The influence of red‐clay turbidity on behavior and distribution of brook trout Salvelinus fontinalis and creek chubs Semotilus atromaculatus was measured in the laboratory. Creek chubs preferred highly turbid water (56.6 formazin turbidity units—FTU) over moderately turbid water (5.8 FTU) but brook trout did not show a preference. In moderately turbid water, both species were more active, and used overhead cover less, than in clear water. The results indicate turbidity may represent an important isolating mechanism that promotes production of creek chubs.