From the Cover: Evolution of moth sex pheromones via ancestral genes.

Roelofs WL; Liu W; Hao GJiao HRooney APLinn CE Jr

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From the Cover: Evolution of moth sex pheromones via ancestral genes.

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Mate finding in most moth species involves long-distance signaling via female-emitted sex pheromones. There is a great diversity of pheromone structures used throughout the Lepidoptera, even among closely related species. The conundrum is how signal divergence has occurred. With strong normalizing selection pressure on blend composition and response preferences, it is improbable that shifts to pheromones of diverse structures occur through adaptive changes in small steps. Here, we present data supporting the hypothesis that a major shift in the pheromone of an Ostrinia species occurred by activation of a nonfunctional desaturase gene transcript present in the pheromone gland. We also demonstrate the existence of rare males that respond to the new pheromone blend. Their presence would allow for asymmetric tracking of male response to the new blend and, thus, evolution of an Ostrinia species with structurally different sex pheromone components.

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《Proceedings of the National Academy of Sciences of the United States of America》 |2002年第21期|13621-13626|共6页
作者
Roelofs WL; Liu W; Hao GJiao HRooney APLinn CE Jr;
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作者单位

Department of Entomology, Cornell University, Geneva, NY 14456;

and Department of Biological Sciences, Mississippi State University, Mississippi State, MS 39762.;

artners.org;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
Pheromones; Gender; Moths; Evolution; desaturase; 信息素类; 蛾; 进化;

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From the Cover: Evolution of moth sex pheromones via ancestral genes.

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