Effects of sublethal doses (16.56 ppm and 8.34 ppm) of Cypermethrin on gonads of female and male Chrotogonus trachypterus were studied respectively. The changes in the level of total protein, cholesterol, alkaline phosphatase, acid phosphatase and ATPase at time intervals of 12, 24 and 48 hrs. of treatment were evaluated. Cypermethrin led to significant and highly significant increase at 12, 24 and 48 hrs. respectively after treatment in male while in female non significant increase at 12 hrs., highly significant (P<0.001) increase at 24 hrs. and more significant (P<0.01) at 48 hrs. were observed. Cholesterol levels Sincreased highly significant (P<0.001) after 12, 24 and 48 hrs. treatment in both the sexes. Alkaline phosphatase activity more significantly (P<0.01) decrease at 12 hrs., highly significant (P<0.001) after 24 and 48 hrs. in male while in female highly significant (P<0.001) decrease was observed as duration increased. Acid phosphatase activity increased non significantly by at 12, 24 hrs. followed with highly significant (P<0.001) increase at 48 hrs. in male and in female this level increased highly significant (P<0.001) as duration increased. ATPase activity was increased highly significant (P<0.001) at 12, 24, 48 hrs. in both sexes. It is concluded that the following biochemical activity as the protein level continue increase, increased cholesterol, alkaline phosphatase decrease, acid phosphatase increase and ATPase increase so affecting the insect reproductive physiology through the process of gametogenesis in gonads as well as controlling fertility by inhibition of production of sperm and ova. Enhance the applied utility of Cypermethrin in pest management.
Acid phosphatase, Alkaline phosphatase, ATPase, Cholesterol, Chrotogonus trachypterus, Cypermethrin, Protein
