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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

REFERENCES

Anonymous (1990a) The battle for control and elimination of cypress aphid in Kenya. Kenya Farmer No. 21 p.Google Scholar
Anonymous (1990b) Aphids. What the farmers can do. Kenya Times. Focus 5 (IP).Google Scholar
Anonymous (1991) Status of Cyprus aphid Cinara cupressi in Kenya.Google Scholar
Derek, B. W., Wood, P., Smith, J. P. and Sian, G. (1984) A Guide to Species Selection for Tropicaland Sub Tropical Plantations. Litho Service, Oxford.Google Scholar
Dixon, A. F. G. (1985) Aphid Ecology. Chapman and Hall, London.Google Scholar
Hill, D. S. (1975) Agricultural Insect Pests of the Tropics and their Possible Control. Cambridge University Press, UK.Google Scholar
Nyaga, C. R. J. (1990) A provisional strategy for the management of the cypress aphid. Kenya Forest Department Technical Order No. 55.Google Scholar
Odera, J. A. (1990) Know and prevent entry of the cypress aphid Cinara cupressi into Kenya. Kenya Forest Research Institute Technical Note No. 7.Google Scholar
Odera, J. A. (1991) Some opportunities for managing aphids of softwood plantations in Malawi. Assistance to Forestry Sector Malawi. MLL/86/020. Rome, FAO.Google Scholar
Taylor, L. R. (1975) Longevity, fecundity and size control of reproductive potential in a polymorphic migrant, Aphis fabae Scop. J. Animal Ecol. 44, 135–163.CrossRefGoogle Scholar