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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.

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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References

Carne, P. B. 1969. On the population dynamics of the eucalypt-defoliating sawfly Perga affinis affinis Kirby (Hymenoptera). Aust. J. Zool. 17: 113–141.Google Scholar
Ghent, A. W. 1960. A study of the group-feeding behaviour of larvae of the jack pine sawfly, Neodiprion pratti banksianae Roh. Behaviour 16: 110–148.CrossRefGoogle Scholar
Henson, W. R. 1965. Individual rearing of larvae of Neodiprion sertifer (Geoffroy) (Hymenoptera: Diprionidae). Can. Ent. 97: 773–779.CrossRefGoogle Scholar
Lyons, L. A. 1964. The European pine sawfly, Neodiprion sertifer (Geoff). (Hymenoptera: Diprionidae). A review with emphasis on studies in Ontario. Proc. ent. Soc. Ont. 94: 5–37.Google Scholar
Lyons, L. A. 1967. Variation in sex ratio and prolonged diapause in Neodiprion swainei Midd. associated with larval mortality. Bi-mon. Res. Notes 23(6): 42–43.Google Scholar
Lyons, L. A. and Griffiths, K. J.. 1962. Observations on the development of Neodiprion sertifer (Geoff.) within the cocoon (Hymenoptera: Diprionidae). Can. Ent. 94: 994–1001.Google Scholar
Smith, S. G. and Wallace, D. R.. 1971. Allelic sex determination in a lower hymenopteran, Neodiprion nigroscutum Midd. Can. J. Genet. Cytol. 13: 617–621.CrossRefGoogle Scholar
Sullivan, C. R. 1965. Laboratory and field investigations on the ability of eggs of the European pine sawfly, Neodiprion sertifer (Geoffroy) to withstand low winter temperatures. Can. Ent. 97: 978–993.Google Scholar
Wilkes, A. 1959. Effects of high temperatures during postembryonic development on the sex ratio of an arrhenotokous insect, Dahlbominus fuliginosus (Nees) (Hymenoptera: Eulophidae). Can. J. Genet. Cytol. 1: 102–109.Google Scholar