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 à 10°C pour 21 jours s’est avérée significativement supérieure que celles obtenues avec d’autres traitements.
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References
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Babu, T.R., Azam, K.M. Effect of Low Holding Temperature During Pupal Instar on Adult Emergence, Pre-Oviposition and Fecundity of Cryptolaemus montrouzieri Mulsant (Coccinellidae: Coleoptera). Int J Trop Insect Sci 9, 175–177 (1988). https://doi.org/10.1017/S1742758400005920
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DOI: https://doi.org/10.1017/S1742758400005920