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MALE AND FEMALE HETEROGAMETY IN POPULATIONS OF CHIRONOMUS TENTANS (DIPTERA: CHIRONOMIDAE)1

Published online by Cambridge University Press:  31 May 2012

Peter E. Thompson
Peter E. Thompson
Affiliation:
Department of Zoology, University of Georgia, Athens
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Abstract

Populations of Chironomus tentans from Iowa and Wisconsin show consistent polymorphisms for inversion sequences of chromosome 1 which are associated with sex. Male larvae from Iowa populations are invariably heterozygous for a sequence of the left arm which is never present in females. In a Wisconsin population, however, females are consistently heterozygous for a dominant sex factor, female determiner (Fd), linked to but not inseparable from an inversion sequence of the right arm. Two primary loci for sex determination appear to have evolved different dominance relations in these races.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 3 , March 1971 , pp. 369 - 372
Copyright
Copyright © Entomological Society of Canada 1971

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References

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