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 cyprès 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 mortalité qui est le plus élevé dans le premiere, le troisième 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.
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Khaemba, B.M., Wanjala, F.M.E. Some Aspects of The Biology of Cinara Cupressi Buckton (Homoptera: Lachnidae) when Bred Under Laboratory Condition. Int J Trop Insect Sci 14, 693–695 (1993). https://doi.org/10.1017/S1742758400018130
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DOI: https://doi.org/10.1017/S1742758400018130