Hormonal control of pheromone responsiveness in the male black cutwormAgrotis ipsilon |
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Authors: | C Gadenne M Renou L Sreng |
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Institution: | (1) Station de Zoologie-Apidologie, Institut National de la Recherche Agronomique, F-84143 Montfavet cedex, France;(2) Laboratoire des médiateurs chimiques, Institut National de la Recherche Agronomique, domaine de Brouessy, F-78114 Magny-les-Hameaux, France;(3) Laboratoire de Communication chimique, Centre National de la Recherche Scientifique, 31 chemin Joseph Ayguier, F-13402 Marseille cedex 9, France |
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Abstract: | In Lepidoptera, reproduction is linked to chemical communication between conspecific partners. When exposed to the female sex pheromone, males respond by exhibiting typical sexual behaviour which leads to mating. Here we show that presence of the juvenile hormone producing gland (corpora allata) of the male black cutworm,Agrotis ipsilon, is necessary for pheromone responsiveness. Allatectomized males do not show any sexual behaviour, although their antennal olfactory system is functional. Allatectomized males implanted with active corpora allata recover full pheromone receptivity. It is suggested that reproductive processes are synchronized in males and females through endocrine control; timing of the mating activity could serve as an adaptive strategy linked to the migratory behaviour of this species. |
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Keywords: | Lepidoptera Noctuidae Agrotis ipsilon black cutworm juvenile hormone allatectomy pheromone reception sexual behaviour tenoxycarb KK-42 |
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