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SEX RATIOS AT EMERGENCE OF TWO SPECIES OF HIGH-ARCTIC AEDES (DIPTERA: CULICIDAE)

Published online by Cambridge University Press:  31 May 2012

H. V. Danks  and
Philip S. Corbet
H. V. Danks
Affiliation:
Entomology Research Institute, Canada Department of Agriculture, Ottawa, Ontario and Department of Biology, University of Waterloo, Waterloo, Ontario
Philip S. Corbet
Affiliation:
Entomology Research Institute, Canada Department of Agriculture, Ottawa, Ontario and Department of Biology, University of Waterloo, Waterloo, Ontario
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Abstract

Sex ratios at emergence of Aedes impiger and A. nigripes in the Hazen Camp area (81°49′ N., 71°18′ W.), northern Ellesmere Island, N.W.T., are given from trap records, mainly for 1963.

There is a marked predominance of females in trap catches from temporary ponds, and an overall slight predominance of females (but with marked pond-to-pond variation) in permanent ponds. The nature of these inter-pond differences favours the inference that, before emergence, males normally survive less well than females, especially under the conditions existing in temporary ponds as they dry up.

Type
Articles
Information
The Canadian Entomologist , Volume 105 , Issue 4 , April 1973 , pp. 647 - 651
Copyright
Copyright © Entomological Society of Canada 1973

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