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颜色斑块大小的家族相似性不受鱼的压力经历的影响
Angelika Ziegelbecker1, Kristina M Sefc1
1Institute of Biology University of Graz Graz Austria.
Ecology and evolution
|July 22, 2024
概括
鱼的黄条宽度主要是由遗传学决定的,而不是生命早期的压力. 这种色彩特征显示出显著的遗传性,表明社会主导信号的强烈遗传基础.
科学领域:
- 动物行为 动物行为
- 进化生物学是进化的生物学.
- 遗传学 遗传学 是一个
背景情况:
- 动物的颜色往往标志着社会地位和交配成功.
- 身体状况和遗传质量影响着色彩,反映出一个人的健康状况.
- 这种鱼是Tropheus* sp. 黑色的"Ikola"呈现出一个黄色的条,其大小与社会主导相对应.
研究的目的:
- 研究 *Tropheus* sp. 中黄色条幅度的遗传和环境影响. 黑色的"伊科拉"鱼.
- 评估早期生活压力和成人压力对色彩图案可塑性的作用.
- 确定这个社会相关的色彩特征的遗传性.
主要方法:
- 通过减少幼儿养来诱导生命早期的压力.
- 应用于成年鱼的压力治疗,具有既定的色彩模式.
- 利用中期父母-中期后代回归和动物模型来估计遗传和环境影响.
主要成果:
- 压力治疗没有显著改变黄色条幅度.
- 后代条幅度与父母值有显著的相关性.
- 动物模型表明了实质性的附加遗传效应,狭义的遗传概率估计范围从0.2到0.8.8.
- 很大一部分变异是由遗传因素或共同的母/幼环境解释的.
结论:
- 黄色条的宽度在这个鱼物种是强烈的遗传.
- 环境因素,特别是晚年,对这种特征的影响有限.
- 颜色,作为社会统治的信号,在Tropheus sp.中在很大程度上是由基因决定的. 黑色的"伊科拉".
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