Abstract
1. Selected enzymes of the stomach-hepatopancreas of adult brown shrimp ( Penaeus sp.) were assayed following exposure of the shrimp to 10 ppm crude oil for 24 hr. 2. Empire Mix crude oil caused no effects on activities of any of the enzymes studied. 3. Saudi Arabian crude oil caused decreases in the specific activities of alkaline phosphatase, γ-glutamyl transpeptidase and leucine aminopeptidase, and increases in the activities of glutamic pyruvic transaminase, glutamic-oxaloacetic transaminase, lactic dehydrogenase and α-hydroxybutyric dehydrogenase. These effects suggest that exposure to this oil causes increases in anaerobic metabolism and changes in protein metabolism and the endoplasmic reticulum. No indications of tissue damage were observed.
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