在本体发生过程中的温度大小反应是独立于祖先的热环境
Gerard Martínez-De León1, Micha Fahrni1, Madhav P Thakur1
1Institute of Ecology and Evolution, University of Bern, Bern, Switzerland.
PeerJ
|May 27, 2024
概括
科伦博拉的温度大小反应在几代人中都很弱,其发展主要受到直接环境条件的影响. 这表明,无论繁殖模式如何,每一代都会重新设置热反应.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 环境科学 环境科学
背景情况:
- 变暖通常会减少成年人的体型 (温度大小规则),但跨代的影响尚不清楚.
- 在Collembola中研究跨世代的温度大小反应.
研究的目的:
- 测试两个科伦博拉物种的温度大小反应,跨越本体遗传阶段和两代.
- 为了确定热环境跨代不匹配是否会影响温度大小响应.
- 评估生殖模式 (无性与性) 在表型可塑性中的作用.
主要方法:
- 使用了两种来自不同温度 (15°C或20°C) 的Collembola物种 (Folsomia candida,Proisotoma minuta).
- 后代 (F1) 在发育过程中暴露于温度 (15°C,20°C,25°C,30°C).
- 测量了卵子直径,成熟时的身体长度和F2卵子直径.
主要成果:
- 对于两种物种的世代内和跨世代可塑性,温度尺寸反应都很弱.
- 蛋和幼的发育显示出更高的温度敏感性和轻微的跨代影响.
- 塑料反应在特征和物种之间有不一致的变化,不支持再生模式作为塑性预测因素.
结论:
- 温度大小反应似乎在这些科伦博拉物种中每一代都会重置.
- 现型可塑性不仅仅是通过繁殖模式来解释的.
- 测量整个本体发生的多个特征对于理解热反应至关重要.
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