Evolution of a behavioral shift mediated by superficial neuromasts helps cavefish find food in darkness.
Evolution of a behavioral shift mediated by superficial neuromasts helps cavefish find food in darkness.
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DOI：
10.1016/j.cub.2010.07.017
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发表时间：
2010-09-28
期刊：
影响因子：
9.2
通讯作者：
Jeffery, William R.
中科院分区：
文献类型：
--
作者：
Yoshizawa, Masato;Goricki, Spela;Soares, Daphne;Jeffery, William R.
洞穴动物如何适应黑暗中的生活是进化生物学中一个知之甚少的方面。在这里，我们确定了行为的转变和它的形态学基础Astyanax mexicanus，硬骨鱼有视力的表面居住形式（表面鱼）和各种盲目的洞穴居住形式（洞穴鱼）。振动吸引行为（VAB）是鱼类在黑暗中向水扰动源游去的能力。VAB通常见于洞穴鱼类，很少见于水面鱼类，有利于在黑暗中成功摄食。显示VAB的潜力具有遗传成分，并与侧线的机械感觉功能有关。VAB诱发的振动刺激峰值在35 Hz，阻断侧线抑制剂，出现在发展后增加浅表神经肥大（SN）的数量和大小，并显着减少了双边消融SN。我们的结论是，VAB和SN增强共同进化，以弥补视力丧失，并帮助盲人洞穴鱼在黑暗中找到食物。
How cave animals adapt to life in darkness is a poorly understood aspect of evolutionary biology. Here we identify a behavioral shift and its morphological basis in Astyanax mexicanus, a teleost with a sighted surface dwelling form (surface fish) and various blind cave dwelling forms (cavefish). Vibration attraction behavior (VAB) is the ability of fish to swim toward the source of a water disturbance in darkness. VAB was typically seen in cavefish, rarely in surface fish, and advantageous for feeding success in the dark. The potential for showing VAB has a genetic component and is linked to the mechanosensory function of the lateral line. VAB was evoked by vibration stimuli peaking at 35 Hz, blocked by lateral line inhibitors, appeared after developmental increases in superficial neuromast (SN) number and size, and was significantly reduced by bilateral ablation of SN. We conclude that VAB and SN enhancement co-evolved to compensate for loss of vision and help blind cavefish find food in darkness.
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影响因子：
1.3
作者：
Plath, M;Rohde, M;Schlupp, I
通讯作者：
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影响因子：
2.5
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DOI：
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发表时间：
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影响因子：
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作者：
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影响因子：
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作者：
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