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Ovisite preference of Goniozus nephantidis Mues. (Hymenoptera: Bethylidae)

Published online by Cambridge University Press:  19 September 2011

O. K. Remadevi ,
T. O. Sasidharan  and
U. C. Abdurahiman
O. K. Remadevi
Affiliation:
Entomology Laboratory, Institute of Wood Science & Technology, 18th Cross, Malleswaram, Bangalore 560 003, India
T. O. Sasidharan
Affiliation:
Silkworm Seed Technology Laboratory, Kodathi, Bangalore 5600035, India
U. C. Abdurahiman
Affiliation:
Department of Zoology, University of Calicut, Kerala 673635, India
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Abstract

The ovisite preference of Goniozus nephantidis (Hymenoptera: Bethylidae) was studied in relation to its hosts, Opisina arenosella, the coconut pest and Corcyra cephalonica, the flour pest. In both hosts, eggs were laid on all the segments except the first thoracic and the last four abdominal segments. Among the abdominal segments, the most preferred were segments 2 and 3 in the case of O. arenosella and 4 and 5 in the case of C. cephalonica. The percentages of eggs located intrasegmentally were 91.35 and 86.19; those of eggs located intersegmentally were 8.65 and 13.80 in the case of O. arenosella and C. cephalonica respectively. The left side was preferred in each host. In most of the egg clutches on O. arenosella, the head end faced the caudal end of the host; on Corcyra cephalonica, the head end faced the head end of the host.

Résumé

La préférence pour le lieu de ponte de Goniozus nephantidis (Hymenoptera: Bethylidae) a été étudiée en relation avec ses hôles Opisina arenosella, le ravageur de noix de coco, et Corcyra cephalonica, le ravageur de farine. Chez les deux nôtes, des oeufs ont été pondues sur tous les segments, sauf le premier segment thoracique et les 4 derniers segments abdominaux. Parmi les segments abdominaux, les plus préferés étaient le 2eme et 4eme dans le cas de O. arenosella, et le 4eme et 5eme dans le cas de C. cephalonica. Les pourcentages d'oeufs qui se trouvaient en position intrasegmentaire étaient de 91,35 et 86,19; ceux qui se trouvaient en position intersegmentaire étaient de 8,65 et 13,80 dans le cas de O. arenosella et C. cephalonica respectivement. Chez les deux hôtes, le côté gauche était préféré. Dans la plupart d'amas d'oeufs, l'extrémité antérieure faisait face à l'extrémité caudale de l'hôte chez O. arenosella; chez C. cephalonica, l'extrémité antérieure d'oeufs faisait face à l'extrémité antérieure de l'hôte.

Keywords

Bethylidaebiological controlCorcyra cephalonicaGoniozus nephantidisOpisina arenosellaovisite preferenceBethylidaelutte biologiqueCorcyra cephalonicaGoniozus nephantidisOpisina arenosellalieu de ponte préférentiel
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 15 , Issue 4-5 , October 1994 , pp. 439 - 443
Copyright
Copyright © ICIPE 1994

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