Title

Effects of Heat Shock on Eggs of American Shad Alosa sapidissima (Wilson)

Authors

T SY Koo

Publication Date

1976

Publication Title

Proceedings of a Workshop on American Shad

Start Page

337

End Page

350

Abstract

Experiments simulating time-temperature histories of steam electric power plants were conducted to determine their effects on American shad eggs. Heat shocks ranged from 10 to 14.5ºC, exposure times ranged from 5 to 60 minutes. Effects were determined by egg mortality and hatchability. Test temperatures from 34.0ºC up were lethal. Lower test temperatures produced different results, depending on developmental stages, with beginning embryo stage more sensitive than late embryo stage. Results of this experiment were reviewed with those of previous workers, and a summarization of time-temperature tolerance level of shad eggs is presented.

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