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Some aspects of the biology of Cinara cupressi Buckton (Homoptera: Lachnidae) when bred under laboratory condition

Published online by Cambridge University Press:  19 September 2011

B. M. Khaemba  and
F. M. E. Wanjala
B. M. Khaemba
Affiliation:
Moi University, Department of Zoology, P. O. Box 3900, Eldoret
F. M. E. Wanjala
Affiliation:
Moi University, Department of Zoology, P. O. Box 3900, Eldoret
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Abstract

Investigations on the biology of Cinara cupressi, a voracious aphid of cypress trees in Kenya, showed that the aphid produced four nymphal instars within a fortnight under laboratory conditions of 22°C and 89% r.h. Reproduction was two nymphs per female adult per day for 12 days of reproduction. Nymphal multiplication was brisk, but was drastically countered by mortality which was highest in the first, third and fourth instars. This led to a mere nymphal survival of 11.0% at most under laboratory conditions.

Résumé

Des recherches entreprises sur la biologie du Cinara cupressi, puceron vorace des cyprés au Kenya, révélant que le puceron produit quatre stades de développement des nymphes en quartorze jours selon des conditions de laboratoire: 22°C et 89% d'humidité relative. La production consiste en deux nymphes par femelles adultes par jour pendant les douze jours de production. La multiplication des nymphes est très important, mais elle set suivie d'un haut taux de mortalite qui est le plus élevé dans le premiere, le troisieme stade. Nous pouvons conclure que le pourcentage de la survie des nymphes e élevé seulment à 11.0%, au grand maximum, sous les conditions de laboratoire énoncées ci-dessus.

Keywords

Cinara cupressicypress treesnymphsinstarsdurationmortality
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 14 , Issue 5-6 , December 1993 , pp. 693 - 695
Copyright
Copyright © ICIPE 1993

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References

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