Pheromones, mate recognition and courtship stimulation in the Drosophila melanogaster species sub-group

Jean-Marc Jallon氏 セミナーのご案内です。
  • 1998/7/1 
  •  

Jean-Marc Jallon


University of Paris-Orsay

Female fruitflies of certain species of Drosophila possess cuticular hydrocarbons which act as contact pheromones, capable of inducing male courtship. In three species of the D. melanogaster species subgroup (D. melanogaster, D. sechellia and D. erecta) adult males and females have hydrocarbons of different lengths and structures. In four other species (D. simulans, D. mauritiana, D. yakuba and D. teissieri) there is no qualitative differencc between the sexes. Observations of courtships showed that hydrocarbons act as courtship-inducing pheromones in all the species studied here. Males can be induced to court other flies, regardless of sex or species, if the hydrocarbons of the courted fly correspond to the main female cuticular hydrocarbon of the species of the courting male. Males from species that do not show a hydrocarbon dimorphism responded mainly to the principal hydrocarbon of their species. Males from the dimorphic species tended to respond to a wider range of hydrocarbons, and also showed high levels of courtship with young flies of both sexes and all species, whose hydrocarbons had some structural similarities to those of homotypic adult females.

 

  • 日時: 1998年8月7日(金)午後4時-5時30分
  • 場所: 東北大学片平南キャンパス 情報科学片平SKK棟 3階セミナー室
  • 連絡: 東北大学情報科学 塚原保夫・磯野邦夫
    電話022-2217-5047 FAX:022-263-9858
    e-mail:isono@biology.is.tohoku.ac.jp
  • ご案内:
    片平南キャンパスの通信研究所の南となりで一番町側から入ると南端にあります。ちょうど仙台七夕の最終日で交通が混雑するかもしれませんが駐車もできます。

 
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