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在一个合作繁殖的鱼中,卵介导的母性影响
Maria Reyes-Contreras1, Bonnie de Vries2, J C van der Molen3
1Division of Behavioural Ecology, Institute of Ecology and Evolution, University of Bern, Wohlenstrasse 50A, 3032, Hinterkappelen, Switzerland.
Scientific reports
|June 16, 2023
概括
母亲的社会环境并没有改变鱼类的卵子皮质类固醇水平. 胚胎修改了母亲的信号,表明后代的经验塑造了社会现象型,而不是母亲的影响.
科学领域:
- 行为生态学 行为生态学
- 生殖生物学 生殖生物学
- 鱼类生物学 鱼类生物学
背景情况:
- 通过卵子传播的母体影响,可以塑造后代的表型.
- 环境线索会影响母亲的影响,但胚胎可以修改这些信号.
- 了解母亲和胚胎角色之间的相互作用对于社会现象型的发展至关重要.
研究的目的:
- 为了研究母亲和胚胎在塑造后代社会现象型中的作用,在Neolamprologus pulcher.
- 为了确定母体的社会环境是否会影响卵子介导的母体效应.
- 检查胚胎如何处理与皮质类固醇代谢产物相关的母体信号.
主要方法:
- 操纵了Neolamprologus pulcher.的母性社会环境 (小群与大群).
- 卵子中的卵子质量,离合体大小和皮质类固醇代谢物度的比较.
- 分析受精卵和未受精卵之间的差异,以评估胚胎对母体信号的处理.
主要成果:
- 小组中的母亲产生了更大的离合体,但没有改变卵子大小或皮质类固醇沉积.
- 受精卵显示特定皮质类固醇代谢物 (11-脱氧皮质醇,皮质素,11-脱氧皮质) 的度较低.
- 根据母亲的社会环境,没有发现有意义的卵子介导的孕产妇影响.
结论:
- 母亲的社会环境并没有直接诱导卵介导的母体对N. pulcher. 皮质类固醇水平的影响.
- 胚胎似乎积极修改母亲的皮质类固醇信号.
- 不同群体大小的不同社会现象类型可能受到后代自己的经历的影响,而不是母亲的影响.
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