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Host-induced augmented reproduction in spotted bollworm, Earias Vittella (fabricius) (Lepidoptera: Noctuidae)

Published online by Cambridge University Press:  19 September 2011

A. J. Tamhankar ,
K. K. Gothi  and
G. W. Rahalkar
A. J. Tamhankar
Affiliation:
Nuclear Agriculture Division Bhabha Atomic Research Centre, Trombay Bombay 400 085, India
K. K. Gothi
Affiliation:
Nuclear Agriculture Division Bhabha Atomic Research Centre, Trombay Bombay 400 085, India
G. W. Rahalkar
Affiliation:
Nuclear Agriculture Division Bhabha Atomic Research Centre, Trombay Bombay 400 085, India
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Abstract

Mating and oviposition of Earias vittella was studied in the absence or presence of the host (okra fruit) or the host odour. When the host was accessible, there was a significant increase in the frequency of copulation, the number of spermatophores transferred and the number of eggs oviposited. Availability of host odour, instead of the host, gave similar results. Further, in general, the number of eggs oviposited by a female was significantly correlated with its mating frequency.

Résumé

On a etudié l'accouplement et la ponte d'Earias vittella en présence ou en absence de I'hote (gombo) ou quand les adultes ont recu I'odeur de I'hôte. Quand I'hôte était accessible, il y avait une augmentation significative dans la fréquence de copulation, le nombre de spermatophores transferés et le nombre d'ouefs pondus. La disponibilité de I'odeur de I'hôte au lieu de I'hôte, a donné les mêmes resultats.

De plus, en générate, le nombre d'oeufs pondus par la femelle était en corrélation significative avec la frequence de son accouplement.

Keywords

Spotted bollwormEarias vittellamating frequencyfecundityhosthost-odourokra fruit.
Type
Research Artilces
Information
International Journal of Tropical Insect Science , Volume 14 , Issue 3 , June 1993 , pp. 371 - 375
Copyright
Copyright © ICIPE 1993

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References

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