Loss of schooling behavior in cavefish through sight-dependent and sight-independent mechanisms.
Loss of schooling behavior in cavefish through sight-dependent and sight-independent mechanisms.
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DOI：
10.1016/j.cub.2013.07.056
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发表时间：
2013-10-07
期刊：
影响因子：
--
通讯作者：
Tabin CJ
中科院分区：
文献类型：
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作者：
Kowalko JE;Rohner N;Rompani SB;Peterson BK;Linden TA;Yoshizawa M;Kay EH;Weber J;Hoekstra HE;Jeffery WR;Borowsky R;Tabin CJ
墨西哥文昌鱼的表面种群，生活在河流中，就像它们的共同祖先一样，学校，而同一物种的几个独立的派生洞穴种群已经失去了觅食行为。我们量化了墨西哥文昌鱼个体的求学行为，并确定了该性状的数量性状基因座(QTL)。我们发现，学校教育的进化调节既有视觉依赖的成分，也有独立的成分。我们还量化了洞穴鱼和表层鱼在侧线和视力上的差异，并将这些差异与进化中的求学行为丧失联系起来。我们提供的证据表明，单胺可能在学校行为的演变中发挥了作用。我们发现视觉对墨西哥文昌鱼的就学倾向是必不可少的，而侧线对这一行为的影响很小。墨西哥文昌鱼的学校教育行为是通过感觉系统的变化和可能作用于感觉输入下游的遗传位点的变化而演变的。
Surface populations of A. mexicanus, living in rivers like their common ancestors, school, while several, independent derived cave populations of the same species have lost schooling behavior. We quantify schooling behavior in individual A. mexicanus and identify quantitative trait loci (QTL) for this trait. We find that the evolutionary modulation of schooling has both vision-dependent and independent components. We also quantify differences in the lateral line and vision between cavefish and surface fish and relate these differences to the evolutionary loss of schooling behavior. We provide evidence that a monoamine may have played a role in the evolution of schooling behavior. We find that vision is essential for schooling tendency in A. mexicanus, while the lateral line has a small effect on this behavior. Schooling behavior in A. mexicanus has evolved both through changes in sensory systems and through changes in genetic loci that likely act downstream of sensory inputs.