Combined Temperature-Salinity Effects on Grass Shrimp

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


Serial Information: Journal of the Environmental Engineering Division, 1977, Vol. 103, Issue 3, Pg. 381-388


Document Type: Journal Paper

Abstract: Standard (Sprague) static bioassay tests were used to determine the effects of temperature, salinity, and their interaction on grass shrimp (Crangon franciscorum) survival after 24 hr, 48 hr, 72 hr, and 96-hr exposure periods. All test organisms were collected from San Pablo Bay, Calif. Temperature and salinity had highly significant effects on survival and responses to changes in temperature and salinity were strongly interdependent. The optimal ranges of temperature and salinity for 90% survival at 96 hr were 14.5°C to 17.0°C and l8% to 20%. These values fall within the environmental fluctuations of the test organism's natural habitat. These results are in agreement with values reported for similar crustaceans. The interaction between effects of temperature and salinity appear to be an apparent inherent property of organisms.

Subject Headings: Temperature effects | Salinity | Vegetation | Organisms | Statics (mechanics) | Biological processes | Static tests | Bays

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