基于黑色素的颜色变化,以应对蛇的气候变化
J Goldenberg1,2, K Bisschop1,3,4, G Bruni5
1Division of Biodiversity and Evolution, Department of Biology Lund University Lund Sweden.
Ecology and evolution
|July 2, 2024
概括
蛇的黑色素体表现出各种各样的气候适应. 带条草蛇中较暗的变形可以防止紫外线辐射,而绿色鞭子蛇与高降水有关,可能是为了抗菌益处.
科学领域:
- 生态学和进化生物学.
- 类学 类学 类学
- 适应气候变化 适应气候变化
背景情况:
- 黑色素,或增加的黑色素,影响生物体的颜色进化和气候适应.
- 黑色素体的物种内变异性研究不足,阻碍了对气候适应的理解.
- 暗色呈现出相互冲突的适应潜力 (热吸收与紫外线保护).
研究的目的:
- 为了研究气候对黑色素质变化的影响,研究了草蛇 (Natrix helvetica) 和绿鞭蛇 (Hierophis viridiflavus) 的变化.
- 测试有关不同黑色素体形态与温度,紫外线辐射和湿度相关的适应意义的假设.
主要方法:
- 在意大利从2002年到2021年期间检查了150种Natrix helvetica和383种Hierophis viridiflavus.
- 利用了黑色的形态 (木炭,图形,丰富) 并将它们的存在与气候变量相关联.
- 采用统计分析来确定形态和环境因素之间的关联.
主要成果:
- 纳特里克斯 (Natrix helvetica) 的木炭形态与高紫外线环境有关,这表明它在紫外线保护中的作用.
- 像预测的那样,Hierophis viridiflavus的木炭形态并没有优化寒冷环境中的热吸收.
- 分别在N. helvetica和H. viridiflavus中的图形形态和丰度形态都与基于湿度的隐藏预期不一致.
- Hierophis viridiflavus显示与高降水的相关性,这可能表明抗菌效益.
结论:
- 蛇的黑色色彩变形表现出特定于气候的关联,暗示了适应性作用.
- 纳特里克斯海尔维蒂卡的木炭形态似乎提供紫外线保护,而Hierophis viridiflavus与降水的关联可能与抗菌防御有关.
- 需要进一步的研究,以阐明驱动这些气候-黑色素质相关性和适应性反应的精确机制.
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