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The Journal of Experimental Biology 205, 3241-3249 (2002)
Copyright © 2002 The Company of Biologists Limited

Temperature affects the ontogeny of sexually dimorphic cuticular hydrocarbons in Drosophila melanogaster

Fabrice Savarit1 and Jean-François Ferveur2,*

1 LEEC, CNRS- FRE 2413, Université Paris 13, 93430 Villetaneuse, France
2 CNRS-UMR 5548, Faculté des Sciences, Université de Bourgogne, 6 Boulevard Gabriel, 21000 Dijon, France

* Author for correspondence (e-mail: jean-francois.ferveur{at}u-bourgogne.fr)

Accepted 5 August 2002

Hydrocarbons on the cuticle of mature Drosophila melanogaster flies play a crucial role in mate recognition, and protect against dehydration. We measured the effect of temperature on mature cuticular hydrocarbons (CHs) by (i) rearing two control strains at different temperatures, (ii) shifting the temperature after metamorphosis and (iii) inducing a single heat-shock pulse in control and heat-sensitive transgenic strains, over a period of 3 days following adult eclosion. This study describes the time course of the events involved in the production of male- and female-predominant CHs. We also found that `immature' CHs, sexually monomorphic CHs on younger flies, were not affected by these treatments.

Key words: mate recognition, temperature, cuticle, cuticular hydrocarbon, Drosophila melanogaster, ontogeny, heat shock, biosynthesis, sex difference


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© The Company of Biologists Ltd 2002