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Biologie d' Hippodamia variegata Goeze (Col., Coccinellidae) et possibilités de son utilisation contre Aphis gossypii Glov (Hom., Aphididae) sous serres de concombre
Author(s) -
Habi M. El,
Sekkat A.,
Jadd L. El,
Boumezzough A.
Publication year - 2000
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1046/j.1439-0418.2000.00467.x
Subject(s) - coccinellidae , biology , aphis gossypii , aphididae , aphid , horticulture , botany , toxicology , population , predator , homoptera , predation , pest analysis , ecology , demography , sociology
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°C and the threshold development temperature is about 11.22°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.