The Effects of Siltation on Embryonic Mortality of Trout
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Date
1980-07
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Ohio State University. Water Resources Center
Abstract
In this research project, we tested the hypothesis that siltation in streams eliminates natural reproduction by increasing mortality during embryonic development. We knew that several environmental factors (temperature, dissolved oxygen, and flow rates) affected
embryonic development. These factors all change with siltation in streams, but the interaction of these factors with silt needed more experimentation. If we could determine the extent to which silt
alone affected embryo mortality, we could design procedures to improve trout reproduction in silted streams. In the first 18 months of our project, we tried to define the critical period of susceptibility
of trout embryos to siltation. Our findings were that siltation alone did not influence embryonic development. During the remaining
six months of the project we explored the effects of siltation on spawning behavior and initiated a new project to determine
the feasibility of selecting trout strains, which would be more tolerant to the marginal conditions in Northeastern Ohio
Description
(print) 28 leaves : ill. ; 28 cm.