CYCLIC NUCLEOTIDE CYCLASE VARIATION DURING DEVELOPMENT OF INSECT CERATITIS-CAPITATA

Guanylate and adenylate cyclase activities were estimated in homogenates of the insect C. capitata at various stages of development. Guanylate cyclase activity was notably higher than adenylate cyclase activity in agreement with cyclic nucleotide and the cyclic nucleotide-dependent protein kinase ratios reported in arthropod tissues. Variations in enzyme activities during development were coincident at adult development, while at other biological stages, as the larval development and puparium formation, the most significant changes affected activity of guanylate cyclase.