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MATING ABILITY IN NEODIPRION SERTIFER (HYMENOPTERA: DIPRIONIDAE)

Published online by Cambridge University Press:  31 May 2012

L. A. Lyons
L. A. Lyons
Affiliation:
Great Lakes Forest Research Centre, Canadian Forestry Service, Sault Ste. Marie, Ontario
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Abstract

Laboratory tests showed that the mating frequency of males of Neodiprion sertifer (Geoff.) averaged 4.28 and varied from 0 to 11. A few adults of both sexes did not mate, despite repeated opportunities. As many virgin as mated females oviposited, but virgins laid 19% fewer eggs. Progeny sex ratios were independent of the number of previous matings by the parental male, but apparently were inversely related to the male’s mating ability and may have been determined paternally.

Résumé

Des essais en laboratoire ont démontré que la moyenne de la fréquence d’accouplement des mâles de Neodiprion sertifer (Geoff.) était 4.28 et variait de 0 à 11. Cependant, malgré plusieurs occasions, quelques adultes des deux sexes ne se sont pas accouplés. Autant de femelles vierges que de femelles fécondées ont pondu mais les vierges ont pondu 19% moins d’oeufs. Les sex ratio de la progéniture ne dépendaient aucunement du nombre d’accouplements antérieurs du mâle parent, mais étaient apparemment inversement reliés à la puissance d’accouplement du mâle et auraient pu être déterminées par le mâle.

Type
Articles
Information
The Canadian Entomologist , Volume 108 , Issue 3 , March 1976 , pp. 321 - 326
Copyright
Copyright © Entomological Society of Canada 1976

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