PMID: 15248494Jul 14, 2004Paper

Performance of Uscana mukerjii (Mani) for the control of Callosobruchus maculatus (Fab.) and allied bruchid species

Indian Journal of Experimental Biology
Seema SoodP K Tewari

Abstract

Investigations have been carried out on the relative preference of U. mukerjii to four common species viz., C. maculatus, C. analis, C. chinensis and Zabrotes subfasciatus of store bruchids. Results show correspondence between the acceptance/contact ratio and the total number of eggs laid by the parasitoid for Callosobruchus species. U. mukerjii shows maximum preference on C. maculatus followed by C. analis, C. chinensis and Z. subfasciatus in the decreasing order. Z. subfasciatus has been the least preferred host having 2-3% parasitization in choice situation. Percentage emergence of the adults and females differ insignificantly from each other in Callosobruchus species. In no choice experiments, U. mukerjii laid sufficient number of eggs in the eggs of C. chinensis and Z. subfasciatus but less number of eggs in a choice situation due to competition with the preferred host. As is evident, U. mukerjii gives the first preference to primary host C. maculatus. Moreover, the congeneric species i.e C. analis and C. chinensis are given more preference than Z. subfasciatus.

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