性倾向的表型可塑性会在不断变化的环境条件下影响性变态模式
Giulia Cordeschi1, Daniele Canestrelli2, Daniele Porretta3
1Department of Environmental Biology, Sapienza University of Rome, Via Dei Sardi 70, Rome, Italy.
Scientific reports
|January 9, 2024
概括
环境条件可以改变蚊子的性二态性. 温度上升和盐度下降破坏了Aedes mariae的发育时间和体型之间的联系,挑战了现有的进化假设.
科学领域:
- 进化生物学 进化生物学
- 生态生态学 生态生态学
- 动物生理学 动物生理学
背景情况:
- 性二态,包括发育时间 (性双成熟) 和身体大小 (性大小二态) 的差异,在动物中很常见.
- 一个一致的模式将较短的发育时间与许多物种中较小的身体尺寸联系在一起.
- 由环境因素驱动的表型可塑性,显著影响了ectotherm的生长和发展.
研究的目的:
- 调查表型可塑性如何影响发育时间和身体尺寸的性二态之间的关联.
- 探索以塑性为主导的蚊子Aedes mariae的生态进化过程,由于其岩石池息地而成为理想的模型.
主要方法:
- 在Aedes mariae的整个本体发生过程中跟踪发育时间,体型和体质.
- 在自然变化的环境条件下的地中海岩池中观察蚊子幼虫.
主要成果:
- 在雄性和雌性Aedes mariae.之间观察到发育时间和身体尺寸的可塑性差异.
- 在特定的环境条件下 (温度升高,盐度降低) 性双成熟和性尺寸变态之间的典型关联被溶解了.
- 研究结果表明,环境条件显著调节性二态化模式.
结论:
- 这项研究挑战了有关发展时间和身体大小相关性双形性变异演变的当前假设.
- 现型可塑性在塑造性二态性方面发挥着至关重要的作用,并且必须考虑其条件依赖性.
- 未来关于性二态的进化研究应该纳入表型可塑性的影响.
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