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Genetic latitudinal adaptation of Drosophila melanogaster: new discriminative biometrical traits between European and equatorial African populations

Published online by Cambridge University Press:  14 April 2009

J. David ,
C. Bocquet  and
M. de Scheemaeker-Louis
J. David
Affiliation:
Laboratoire d'Entomologie expérimentale et de Génétique (associé au C.N.R.S.), Université Claude Bernard, 69621 Villeurbanne, France
C. Bocquet
Affiliation:
Laboratoire de Biologie et Génétique Evolvtives du C.N.R.S., 91190 Gif sur Yvette
M. de Scheemaeker-Louis
Affiliation:
Laboratoire de Biologie et Génétique Evolvtives du C.N.R.S., 91190 Gif sur Yvette
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Summary

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Five biometrical traits (thorax length, wing length and width, sternopleural and abdominal chaetae numbers) were measured on 13 equatorial African strains and 30 French strains. In all cases highly significant differences were observed between the two geographic groups. These results are added to previously known variations concerning adult weight and ovariole number. In each place, the genetic particularities of the wild populations seem to be maintained by the selective pressure from environmental conditions, resulting in a homeostatic focusing of the best fitted average genotype. Analysis within each group showed that variations between strains were in most cases poorly or not correlated, so that partial or total genetic independence between the various traits measured seems likely.

Type
Research Article
Information
Genetics Research , Volume 30 , Issue 3 , December 1977 , pp. 247 - 255
Copyright
Copyright © Cambridge University Press 1977

References

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