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Effect of Low Holding Temperature During Pupal Instar on Adult Emergence, Pre-Oviposition and Fecundity of Cryptolaemus montrouzieri Mulsant (Coccinellidae: Coleoptera)

Published online by Cambridge University Press:  19 September 2011

T. Ramesh Babu  and
K. M. Azam
T. Ramesh Babu
Affiliation:
Seed Technology Research Project, Rajendranagar, Hyderabad-30, India
K. M. Azam
Affiliation:
Registrar, A.P. Agricultural University, Rajendranagar, Hyderabad-30, India
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Abstract

The effect of exposing 1, 3 and 5 days old pupae to 10°C for periods of 7, 14, 21 and 28 days on the emergence, pre-oviposition and fecundity of Cryptolaemus montrouzieri Mulsant was studied. The emergence was delayed significantly when 1 and 3 days old pupae were subjected to 10°C for 28 days when compared to 5 days old pupae. The initiation of oviposition was delayed with the prolongation of holding time. The fecundity of females emerging from 5 days old pupae subjected to 10°C for 21 days was found to be significantly higher than in any other treatment.

Résumé

L'effet d'exposer des pupes âgées d'un, de trois et de cinq jours à 10°C pour des périodes de 7, 14, 21 et 28 jours sur l'émergence, la préoviposition et la fécondité de Cryptolaemus montrouzieri Mulsant a été étudié. L'émergence a été significativement retardée lorsque des pupes âgées d'un et de trois jours ont été soumises à 10°C pour 28 jours par rapport aux pupes âgées de cinq jours. L'initiation de l'oviposition a été retardée avec la prolongation de l'exposition. La fécondité des femelles qui ont émergées des pupes âgées de cinq jours soumises â 10°C pour 21 jours s'est avérée significativement supérieure que celles obtenues avec d'autres traitements.

Keywords

Predatormealybuggrapevinetemperature
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 9 , Issue 2 , April 1988 , pp. 175 - 177
Copyright
Copyright © ICIPE 1988

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References

REFERENCES

Babu, T. R. and Azam, K. M. (1987) Biology of Cryptolaemus montrouzieri Mulsant (Coccinellidae: Coleoptera) in relation with temperature. Entomophaga 32 (in press).CrossRefGoogle Scholar
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