Reference : The impact of sperm precedence in malathion resistance transmission in populations of th...
Scientific journals : Article
Life sciences : Entomology & pest control
http://hdl.handle.net/2268/26120
The impact of sperm precedence in malathion resistance transmission in populations of the red flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)
English
Haubruge, Eric mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Entomologie fonctionnelle et évolutive > >]
Arnaud, Ludovic [> > > >]
Mignon, Jacques mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Entomologie fonctionnelle et évolutive > >]
1997
Journal of Stored Products Research
Pergamon Press - An Imprint of Elsevier Science
33
2
143-146
Yes (verified by ORBi)
International
0022-474X
[en] malathion ; insecticide resistance ; Tribolium castaneum ; sperm precedence ; sperm competition
[en] Malathion resistance in the red flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) is actually a worldwide problem, and studies on resistance transmission are needed to improve insecticide resistance management. Females of Tribolium castaneum commonly mate with several males, and the last batch of male sperm preferentially fertilizes subsequent eggs. This phenomenon, a particular form of sexual selection, helps to increase resistance transmission in populations of stored product insects. We confirmed the last male sperm precedence and, in the absence of further matings, examined the evolution of mixed susceptible and malathion-resistant progeny during a 3-month period. The proportion of resistant phenotypes in female progeny was 99.6 and 3%, respectively, after the first mating with a resistant male and the second mating with a susceptible one. When females thus mated twice were isolated from males, the proportion of the resistant phenotype increased to 34.1% after 30 days. From 72 days onwards, this proportion ranged from 14.2 to 29.7%. (C) 1997, Published by Elsevier Science Ltd.
http://hdl.handle.net/2268/26120

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