Scholarlink

<p>Animal species exhibit variation in the mating frequency of females. Theories suggest that the cost–benefit balance between males and females underlies the evolution of mating frequency. However, determining which sex is responsible for the differences in mating frequencies observed between species is usually difficult. <i>Drosophila prolongata</i> serves as a unique study system in which mating frequency once underwent a drastic decline during its evolutionary history. Behavioural analyses have suggested that physiological changes in either males or females could account for this evolutionary shift. To disentangle these mechanisms, we adopted an experimental approach examining the female response to the injection of male extract. In <i>D. prolongata</i>, a reduction of female receptivity was detected 7&#xa0;days after the injection of male extract, whereas in <i>D. melanogaster</i>, receptivity recovered to a normal level within 3 days. When extracts of heterospecific males were injected, <i>D. prolongata</i> females showed a comparable level of response to <i>D. melanogaster</i> extract, whereas <i>D. melanogaster</i> females showed a weaker response to <i>D. prolongata</i> extract. Although the contribution of male-side factors cannot be excluded, these results support the mechanism in which females are involved in the evolution of mating frequency in <i>D. prolongata</i>.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Contribution of female-side evolution to the extended postmating refractory period in Drosophila prolongata and D. rhopaloa

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月28日

查看全文
  • Motoharu Ito,
  • Takashi Matsuo

摘要

Animal species exhibit variation in the mating frequency of females. Theories suggest that the cost–benefit balance between males and females underlies the evolution of mating frequency. However, determining which sex is responsible for the differences in mating frequencies observed between species is usually difficult. Drosophila prolongata serves as a unique study system in which mating frequency once underwent a drastic decline during its evolutionary history. Behavioural analyses have suggested that physiological changes in either males or females could account for this evolutionary shift. To disentangle these mechanisms, we adopted an experimental approach examining the female response to the injection of male extract. In D. prolongata, a reduction of female receptivity was detected 7 days after the injection of male extract, whereas in D. melanogaster, receptivity recovered to a normal level within 3 days. When extracts of heterospecific males were injected, D. prolongata females showed a comparable level of response to D. melanogaster extract, whereas D. melanogaster females showed a weaker response to D. prolongata extract. Although the contribution of male-side factors cannot be excluded, these results support the mechanism in which females are involved in the evolution of mating frequency in D. prolongata.