Effects of Temperature and Kelthane on Grass Shrimp

by Siamak Khorram, Staff Research Assoc.; Dept. of Land, Air and Water Resources, Water Sci. and Engrg. Section, Univ. of California, Davis, Calif.,
Allen W. Knight, Assoc. Prof.; Dept. of Land, Air and Water Resources, Water Sci. and Engrg. Section, Univ. of California, Davis, Calif.,


Serial Information: Journal of the Environmental Engineering Division, 1976, Vol. 102, Issue 5, Pg. 1043-1053


Document Type: Journal Paper

Abstract: Proportional continuous-flow bioassay tests were used to determine the effects of temperature and Kelthane (organochlorine) on grass shrimp Crangon survival for exposure periods of 24 hr, 48 hr, and 72 hr under laboratory conditions. All specimens were collected from San Pablo Bay, California. Both elevated temperature and Kelthane concentration had a significant inverse effect on Crangon survival, and the responses to an increase in temperature and Kelthane concentration were strongly interdependent. As temperature increased, the Kelthane concentration lethal to a given percentage of shrimp decreased, and, conversely, as Kelthane concentration increased, the temperature lethal to a certain percentage of population decreased. The results are in general agreement with values reported for other aquatic animals. Sublethal effects of Kelthane on Crangon were also observed. Feeding, molting, and motor control were affected by Kelthane.

Subject Headings: Temperature effects | Vegetation | Organic compounds | Aquatic habitats | Agreements and treaties | Bays | Biological processes | Animals | North America | California | United States

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