在多虫入侵昆虫中,温度取代了最佳卵置决定的营养线索
Wendy Destierdt1,2, Gwenaëlle Deconninck1,3, José E Crespo4
1Institut de Recherche sur la Biologie de l'Insecte, UMR 7261, CNRS - Université de Tours, 37200 Tours, France.
The Journal of experimental biology
|January 9, 2026
概括
雌性斑点翼多索菲拉优先考虑热性最佳的卵巢位置,即使在营养上是不理想的,也会影响它们的入侵成功. 沃尔巴基亚感染进一步影响后代的表现和卵子的分布.
科学领域:
- 行为生态学 行为生态学
- 昆虫生理学 昆虫生理学
- 进化生物学 进化生物学
背景情况:
- 多虫使用多个线索来选择卵巢位置,经常面临温度和营养等相互矛盾的信号.
- 侵袭性果Drosophila suzukii (斑点翼) 在繁殖过程中面临着不同的环境条件.
研究的目的:
- 为了研究Drosophila suzukii雌性在温度和营养线索不匹配时如何做出排卵决定.
- 为了确定Wolbachia感染对这些卵置选择和后代表现的影响.
主要方法:
- 在不同温度下对各种水果杂质进行量化的雌性表现 (卵数,发育时间,存活率,质量).
- 在基板温度和水果质量的独立变化下评估卵置偏好.
- 进行了多选项实验,结合热量和营养线索,以确定卵置的关键驱动因素.
主要成果:
- 温度和水果质量都显著影响了后代的表现.
- 雌性始终优先考虑热量最佳的地点,而不是营养优越的地点,支持温度偏好-性能假设.
- 沃尔巴基亚感染提高了后代的生存率,缩短了发育时间,导致了更均的卵子分布,而热偏好仍然存在.
结论:
- 德洛索菲拉 (Drosophila suzukii) 的入侵成功可能部分归因于其选择在可变条件下最大限度地提高后代表现的卵置点的能力.
- 响应相互矛盾的环境约束的行为灵活性对于个人健康和人口持续性至关重要.
- 了解这些复杂的决策过程对于预测和管理入侵物种至关重要.
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