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Life Table of Spilosoma obliqua (Lepidoptera: Arctiidae) on Sunflower

Published online by Cambridge University Press:  19 September 2011

R. Varatharajan ,
S. Amar Singh ,
T. James Keisa ,
O. D. Singh  and
R. Selvasundaram
R. Varatharajan
Affiliation:
Department of Life Sciences, Manipur University, Imphal-795 003, India
S. Amar Singh
Affiliation:
Department of Life Sciences, Manipur University, Imphal-795 003, India
T. James Keisa
Affiliation:
Department of Life Sciences, Manipur University, Imphal-795 003, India
O. D. Singh
Affiliation:
Department of Life Sciences, Manipur University, Imphal-795 003, India
R. Selvasundaram
Affiliation:
UPASI Tea Research Institute, Coimbatore 642 127, Tamil Nadu, India
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Abstract

Life table statistics on the age-specific fecundity and survival of female Spilosoma obliqua Walker reared on sunflower showed a net reproductive rate of 513.6 eggs per female, with approximate generation time of 48.2 days. Its intrinsic rate of increase (rm) was 0.1295, meaning that its population could double in 5.35 days. Spilosoma obliqua on sunflower was parasitised by Apanteles obliquae, Glyptapanteles creatonoti and Carcelia sp.

Résumé

Les données statistiques de la table de vie sur l'âge spécifique de fécondité et la survie des femelles de Spilosoma obliqua Walker, élevées sur le tournesol ont montré un taux net de reproduction de 513,6 oeufs par femelle et une durée du cycle biologique s'a peu près 48,2 jours par génération. Le taux intrinsèque d'accroissement (rm) était de 0,1295, ce qui veut dire que la population de l'insecte pourrait doubler endéans 5,35 jours. Sur le tournesol, S. obliqua était parasité par Apanteles obliquae, Glyptapanteles creatonoti, et Carcelia sp.

Keywords

Spilosoma obliquaintrinsic rate of increasenatural enemiesSpilosoma obliquataux intrinsèque de reproductionennemis naturels
Type
Short Communication
Information
International Journal of Tropical Insect Science , Volume 18 , Issue 4 , December 1998 , pp. 383 - 385
Copyright
Copyright © ICIPE 1998

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References

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