中国附着木脑形态在气候梯度上的适应

IF 2 2区 生物学 Q3 EVOLUTIONARY BIOLOGY
Mengyu Liu, Yanqiu Liu, Xiaoqin Wang, He Wang
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引用次数: 1

摘要

许多研究已经证实了环境对大脑的影响。然而,这种变化的原因是表现性的还是遗传性的仍然存在争议。在本研究中,我们研究了来自中国10个不同种群的亲和Gambusia affinis脑的形态学变化。我们发现,总脑和脑区域的大小受到气候梯度的影响。例如,嗅球、视顶盖、小脑体和整个大脑的体积从北向南递减。普通花园实验表明,下丘脑和整个大脑的大小变化是遗传的,而大脑其他区域的大小变化是表型可塑性的。野生鱼类脑形态的变化支持马赛克假说。共同花园实验为脑容量的遗传力估计和表型可塑性提供了参考。此外,我们的研究也为深入研究飞蛾大脑的适应性进化奠定了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Brain morphological adaptations of Gambusia affinis along climatic gradients in China

Many studies have confirmed the impact of the environment on the brain. However, it is still controversial whether the cause of the change is phenotypically plastic or heritable. In this study, we studied morphological variations of the brain among Gambusia affinis obtained from 10 different populations in China. We found that the sizes of total brain and brain regions were affected by climatic gradients. For instance, there was a decrease in the volume of olfactory bulbs, optic tectum, corpus cerebelli, and total brain from north to south. Common-garden experiments indicated that the variations in the sizes of the hypothalamus and the total brain were heritable, while that of other brain regions were phenotypically plastic. Variation in brain morphology of wild fish supports the mosaic hypothesis. The common-garden experiments provide a reference for heritability estimates and phenotypic plasticity of brain volumes. In addition, our study has laid the foundation for in-depth research on the adaptive evolution of the brain of Gaffinis.

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来源期刊
CiteScore
5.60
自引率
0.00%
发文量
13
审稿时长
>12 weeks
期刊介绍: The Journal of Zoological Systematics and Evolutionary Research (JZSER)is a peer-reviewed, international forum for publication of high-quality research on systematic zoology and evolutionary biology. The aim of the journal is to provoke a synthesis of results from morphology, physiology, animal geography, ecology, ethology, evolutionary genetics, population genetics, developmental biology and molecular biology. Besides empirical papers, theoretical contributions and review articles are welcome. Integrative and interdisciplinary contributions are particularly preferred. Purely taxonomic and predominantly cytogenetic manuscripts will not be accepted except in rare cases, and then only at the Editor-in-Chief''s discretion. The same is true for phylogenetic studies based solely on mitochondrial marker sequences without any additional methodological approach. To encourage scientific exchange and discussions, authors are invited to send critical comments on previously published articles. Only papers in English language are accepted.
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