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Proteolytic activity in the gut of red cotton bug, Dysdercus cingulatus Fabr. and its predator, Antilochus cocquebertii (Fabr.) (Heteroptera: Pyrrhocoridae)


, : Proteolytic activity in the gut of red cotton bug, Dysdercus cingulatus Fabr. and its predator, Antilochus cocquebertii (Fabr.) (Heteroptera: Pyrrhocoridae). Current Science, India 54(5): 252-253

Proteinase activity in the gut of Dysdercus cingulatus (collected from Bombax ceiba in India) and its predator Antilochus coquebertii was highest at pH 2.0 for both species (especially the males) and was absent in the predator at pH 7.0. As a pest of Malvaceae, D. cingulatus required enzymes that acted in acidic as well as in neutral pH in order to digest plant proteins, while its predator required enzymes that acted only at acidic optimum.

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