Madras Agricultural Journal
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LIFE TABLES AND INTRINSIC RATE OF NATURAL INCREASE OF Trichospilus pupivora POPULATION ON DIFFERENT HOSTS

Abstract

                                The present study deals with life tables and intrinsic rates of natural increase of Trichospilus pupivora Ferr. a pupal parasitoid of Opisina arenosella walker. The maximum mean progeny production per day was on Ergolis merione Cr., (86.20). The innate capacity increase ranged from 0.288 to 0.308 per female per day depending on the hosts used. The maximum multiplication of the population also occurred on the same host. The population multiplied 118.31 times in mean generation time of 15.55 days.

Key words : Life table, Pupal Parasitoid, Trichospilus pupivora

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