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EARLY DIFFERENTIAL MORTALITY IN NEODIPRION SERTIFER (HYMENOPTERA: DIPRIONIDAE)

Published online by Cambridge University Press:  31 May 2012

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

In Neodiprion sertifer (Geoff.), mortality is greater in males than in females in the egg stage and probably also among early larvae, but in the late larval period females are more susceptible. The evidence consists of the difference in mortality between all-male and mixed (male + female) colonies, as well as the relationship of secondary sex ratio to preceding mortality and the number of survivors per colony. The effect of differential mortality on estimation of the primary sex ratio is discussed.

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Type
Articles
Information
The Canadian Entomologist , Volume 106 , Issue 1 , January 1974 , pp. 1 - 10
Copyright
Copyright © Entomological Society of Canada 1974

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