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Effect of juvenile hormone analogues on the reproduction and longevity of mustard aphid, Lipaphis erysimi (Kalt.)

Published online by Cambridge University Press:  19 September 2011

Gursharan Singh  and
H. S. Sidhu
Gursharan Singh
Affiliation:
Department of Processing and Agricultural Structures, College of Agricultural Engineering, Punjab Agricultural University, Ludhiana-141004 (Pb.), India
H. S. Sidhu
Affiliation:
Department of Processing and Agricultural Structures, College of Agricultural Engineering, Punjab Agricultural University, Ludhiana-141004 (Pb.), India
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Abstract

Effects of topical application of two juvenile hormone analogues (JHAs), R-20458 (6, 7-epoxy-1(p-ethylphenoxy)-3, 7-dimethyl-2-octene) and ZR-512 (ethyl 3, 7, 11-trimetnyl-2, 4-dodecadienoate) on reproduction and longevity of mustard aphid, Lipaphis erysimi (Kalt.) were investigated. Doses of the JHAs as high as 2 μg per aphid failed to reduce the fecundity of the aphid though initial reduction in the daily reproduction was observed. Also, the doses which induced morphogenetic abnormalities at the third-instar, could not affect embryogenesis.

Résumé

Les effets de l'application journalière de deux hormones analogues à JH, R-20458 (6, 7-epoxy-1 (p-ethylphenoxy)-3, 7-dimethyl-2-octene) et ZR-512 (ethyl 3, 7, 11-trimethyl-2, 7-dodecadienate) sur la reproduction et la longevité du Lipaphis erysimi (Kalt) ont étè analyse. Les doses de deux hormones analogues à JH de 2μg par aphide n'ont pas reduit la fecondité des aphides, bien qu' une reduction initiale journalière fut observée. Les doses provoquant des deformations morphogenetiques aux larves du 3eme stage n'ont eu aucun effet sur l'embryogenèse.

Keywords

luvenile hormone analogues (JHAs)reproductionnymphal-adult intermediatesmustard aphidHormones analogues à JHreproductionnympheadultesaphides
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 11 , Issue 1 , February 1990 , pp. 69 - 72
Copyright
Copyright © ICIPE 1990

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References

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