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Life-tables and intrinsic rate of natural increase of Xanthopimpla stemmator Thunberg (Hymenoptera:Ichneumonidae) population on Chilo partellus pupae

Published online by Cambridge University Press:  19 September 2011

P. K. Nikam  and
C. D. Basarkar
P. K. Nikam
Affiliation:
Department of Zoology, Marathwada University, Aurangabad-431 004, India
C. D. Basarkar
Affiliation:
Department of Zoology, Marathwada University, Aurangabad-431 004, India
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Abstract

The pupal parasitoid Xanthopimpla stemmator Thunberg oviposits in the pupae of the spotted stalk borer (or sorghum stem borer) Chilo partellus (Swin). The adult parasitoid emerges from the pupal case, killing it in the process. Ten mated females of the parasitoid had an average longevity of 30 days (maximum 37 days and minimum 22 days). The number of progeny produced ranged from 71 to 115, with an average of 84.5. The male:female sex-ratio of their progeny averaged 1.14:1. The maximum mean progeny production per day (mx) was 1.9. The innate capacity for increase was 0.131 per female per day; and the population multiplied 43.43 times in the generation time of 28.78 days.

Keywords

Xanthopimpla stemmatorChilo partellusprogenyintrinsic rate of natural increase
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 2 , Issue 4 , December 1981 , pp. 209 - 212
Copyright
Copyright © ICIPE 1981

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