Biology of Hippodamia variegata Goeze (Col., Coccinellidae) and its suitability against Aphis gossypii Glov (Hom., Aphididae) on cucumber under greenhouse conditions

Biology of Hippodamia variegata Goeze (Col., Coccinellidae) and its suitability against Aphis gossypii Glov (Hom., Aphididae) on cucumber under greenhouse conditions. Research work carried out in the laboratory has shown that temperature has a great effect on the development and the amount of feedin...

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Bibliographic Details
Published in:Journal of applied entomology (1986) 2000-12, Vol.124 (9-10), p.365-374
Main Authors: Habi, ME, Sekkat, A, Jadd, LE, Boumezzough, A
Format: Article
Language:fre
Subjects:
Aphididae
Aphis gossypii
Coccinellidae
Cucumis sativus
Hippodamia variegata
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Summary:Biology of Hippodamia variegata Goeze (Col., Coccinellidae) and its suitability against Aphis gossypii Glov (Hom., Aphididae) on cucumber under greenhouse conditions. Research work carried out in the laboratory has shown that temperature has a great effect on the development and the amount of feeding of Hippodamia variegata. The optimum temperature for its development and voracity approaches 26 degree C and the threshold development temperature is about 11.22 degree C. Investigations on its use in cucumber greenhouses against Aphis gossypii, the release of larvae and adult forms had shown satisfactory results. The efficiency level of this ladybird is a function of the ratio predator/prey and on the level of the aphid population at the moment of the ladybird release. The effect of density of the prey on the fecundity and the settlement of this ladybird under greenhouse conditions were also studied. The biological features and the efficiency of this ladybird are discussed.
ISSN:0931-2048
DOI:10.1046/j.1439-0418.2000.00467.x