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Amir H Tourani¹, Alihan Katlav¹, James M Cook¹

¹Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.

Evolution letters

|February 6, 2026

概括

带有Cardinium的雌性花会避开带有Wolbachia的雄性,使用化学线索来检测不兼容的伴侣. 这种宿主-内共生体相互作用影响交配偏好和害虫控制策略.

科学领域:

节肢动物生物学
微生物生态学微生物生态学
进化遗传学的进化遗传学

背景情况:

像Wolbachia和Cardinium这样的母亲遗传的内共生体在关节动物中很普遍.
一些内共生体诱导细胞质不相容性 (CI),一种生殖操纵,有利于内共生体传播,但伤害未感染的雌性.
宿主-内共生体在繁殖上的冲突可以塑造宿主交配行为,尽管这在拥有多个内共生体的宿主中研究较少.

研究的目的:

调查凯利 (Pezothrips kellyanus) 的伴侣选择和化学交流,这是一个携带Cardinium和Wolbachia的害虫.
确定不同的内共生体组合如何影响雌性交配偏好和雄性交配成功.
分析皮质碳化合物 (CHC) 形状及其在介导伴侣识别中的作用.

主要方法:

行为测试用于评估不同内生生体状态的雌性与雄性的交配偏好.
气色谱-质谱 (GC-MS) 用于分析男性的皮质碳化合物概况.
对雌性内生体感染的实验性操纵.

主要成果:

仅感染 Cardinium (C) 的雌性更喜欢携带兼容 C 或无内生体的雄性,而不是携带 Cardinium 和 Wolbachia (CW) 的不兼容的雄性.
拥有两种内共生体 (CW) 的雌性没有表现出交配偏好.
没有内共生体的雌性也没有表现出偏好,尽管面临CI风险.
雄性交配的成功主要与雌性受体性有关,而不是雄性内生体状态.
在具有不同内生生体关联的雄性之间发现了不同的CHC概况,CW雄性表现出tridecane.

结论:

感染的雌性可以检测和避免Wolbachia诱导的CI使用不兼容的CW雄性化学线索.
内生生体相互作用通过化学和行为修饰显著影响宿主性选择.
这些发现对于理解关节动物种群动态和开发基于内生生物的新型害虫管理策略至关重要.

关键词:

选择性交配选择性的交配化学通信是一种化学通信.皮质的碳化合物皮质的碳化合物作为一个内生生体,它是内生生体.选择伴侣选择伴侣选择交生生物与宿主之间的冲突

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