Effect of some selected insecticides on the activity of invertase at different stages of pentatomid bug, Cyclopelta siccifolia W.
##plugins.themes.bootstrap3.article.main##
Abstract
The invertase enzyme which has been reported to occur in the digestive tract of several insects is believed to be an important enzyme for digestion and utilization of sucrose by insects. In the present investigation the effect of different insecticides such as Endosulfan, Monocrotophos, Methomyl, Phosphomidon and Carbaryl on invertase activity has been carried out at different stages of Pentatomid bug Cyclopelta siccifolia W. with lethal concentrations of respective insecticides. The data revealed that maximum decrease in Invertase activity was detected with (45%) at 24 hours. In case of II instar nymphs the least activity was observed with Carbaryl and it was -75.20% at 24 hours. In IV instar nymphs endosulfan showed its supremacy by reducing the activity by -8.5% in comparison with control. The overall results revealed that the activity of invertase varies with different insecticide treatments and it has been concluded that least activity was recorded with Carbaryl at II instar stage compared to other insecticides.
##plugins.themes.bootstrap3.article.details##
##plugins.themes.bootstrap3.article.details##
Ishaaya, I. and Swirski, E. (1970). Invertase and amylase activity in the armored scales Chrysomphalus aonidum and Aonidiella aurantii. J. Insect. Physiol., 16: 1599-1606.
Kurappasamy, R.C., Ecanthezhiyan and Parasarthi, K. (2001). Inhibitory effects of Annona squamota (Annonaceae) on the digestive enzymes of Pheropsophus hilaris (fabr.) (Coleoptera: Carabidae). Environmental and Ecology,19:584-587.
Lomte, V.S. and Patil. (1989). Effects of some common pesticides on the digestive enzymes of armyworm Mythimia separata. Indian J. Inv. Zool and Aqua. Biol., 1(2): 58-67.
Rekha, S., Misahuddin and Ehteshamudin, S. (2000). Effect of phosphomidon on the alkaline phophotase activity in the haemolymph and sap feeding insect pest Aspongopus janus, Chrysocoris stollii and Deysdescus cingulatus. Environment and Ecology, 18:323-325.
Vatsala, E. and Chocklingam. (1986). Effects of insecticides on the inhibition of digestive enzymes in Spodotera litura. Proc. Nat. Insect. Physiol.Ecol and Behv., 50: 25-29.
Wigglesworth, V.B. (1963). The principles of insect physiology, Chappman and Hall, London.
This work is licensed under Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) © Author (s)
