| Abstract: | Histochemical techniques described by McManus (1960) have been applied in the fishes, Notopterus notopterus and Colisa fasciatus, for the study of Glucose-60phosphatase and adenosine triphosphatase in the four stages of gonads in different seasons. It has been observed that the activity of adenosine triphosphatase is more intense in comparison to the activity of Glucose-6-phosphatase in all the stages i.e. I (immature), II (maturing), III (mature) and IV (spent) of the gonads in both the fishes. The general tendency of the adenosine triphosphatase and Glucose-6-phosphatase distribution in the gonads are much more remarkable in stage II in comparison to stage I, III and IV. The stage I seems to be the stage of synthesis of these enzymes. In stage III and IV, these enzymes show the tendency of declination with the time period. The possible role of these enzymes seems to be the transport of glucose across the cell membrane involving phosphorylation and dephosphorylation which depend on the different stages of gonad maturation. |
