压力高的体温作为对繁殖的母性影响
Ecological and evolutionary physiology
|December 16, 2024
概括
父母的热压力会对棕色鱼后代的生存和生长产生负面影响. 蛋化温度也会影响后代的发育,但对母亲的影响更为有害.
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:
- 全球气温上升给许多物种带来了热压力.
- 了解环境压力的代际影响对于人口的反应至关重要.
- 母亲的影响和对胚胎的直接环境影响可以塑造后代的表型.
研究的目的:
- 量化母体和卵子热应激对棕色 (Anolis sagrei) 生殖生理学和发育的影响.
- 要确定母体或卵体验的热应激是否对后代产生明显的后果.
- 为了研究热应激跨代的潜在附加效应.
主要方法:
- 在繁殖过程中将母棕色鱼暴露在热应激中.
- 在化过程中将棕色蛋暴露在热应激中.
- 量化后代的大小,生长速度,发育时间,化后的存活率和质量.
主要成果:
- 孕产妇的热应激导致卵子较小,后代较小,后代生长率降低.
- 蛋热应激减少了后代的发育时间和后代质量.
- 幼的生存和生长受到母亲的热应激的负面影响,而不是蛋的热应激.
- 热应激对不同的后代特征产生了特定的,主要是负面的影响,这取决于母体还是卵体验了热应激.
结论:
- 母亲在生殖过程中经历的热应激对后代的健康有显著的负面影响.
- 化期间卵体验的热压力也会影响发育,但比母亲的压力要小.
- 爬行动物中的母体热效应可能对后代有害,影响各种表型特征和健康代理.
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