The hemolymph of chasmagnathus granulata dana,1851 (Decapoda - grapsidae) as a target tissue ofthe crustacean hyperglycemic hormone

The effect of crustacean hyperglycemic hormone (CHH) was investigated on the hemolymph of Chasmagnathus granulata, a meso-supralitoral crab from southern Brazil. Serum glucose increased significantly (P®0.05) after incubation of total hemolymph in the presence of the eyestalk extract of a member of the same species. Also glucose uptake from blood serum, not affected by eyestalk extract (P¼0.05) was observed after incubation of total hemolymph in the presence of glucose.The results that the hemolymph may be a target tissue of CHH and that this hormone may act by mobilizing carbohydrate reserves possibly from hematocytes.