Influence of cGMP on Feeding Potential of Predatory Coccinellid,Cryptolaemus montrouzieri Mulsant and Isolation of Partial foraging Gene |
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| Authors: | P D Kamala Jayanthi R Rajinikanth K V Ravishankar P Sangeetha Abraham Verghese D Lokeshwari |
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| Institution: | 1. Department of Entomology and Nematology, Indian Institute of Horticultural Research, Hesseraghatta Lake PO, Bangalore, Karnataka, India
2. Department of Biotechnology, Indian Institute of Horticultural Research, Hesseraghatta Lake PO, Bangalore, Karnataka, India
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| Abstract: | The cyclic guanomonophosphate (cGMP) dependent protein kinase (PKG) plays an important role in the food related behaviours of several insect species. Here we report the influence of cGMP dependent PKG on prey consumption of adult predatory coccinellid, Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae). The oral cGMP treatment (which increases PKG activity) enhanced the feeding potential of C. montrouzieri. The good foragers responded more positively to the cGMP treatment compared to the poor foragers. The cGMP levels estimated through ELISA were significantly (P?<?0.001) high in the digestive tissues of unfed as well as cGMP treated C. montrouzieri compared to normal fed beetles. This finding suggests that cGMP is involved in the higher feeding rates of C. montrouzieri and the partial foraging gene (~455 bp) which encodes the cGMP dependent PKG was isolated from genomic DNA of C. montrouzieri using gene specific primers. |
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