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视觉是动物最重要的通讯手段之一,其进化历程一直以来都为学者所关注。蝴蝶和蛾子是鳞翅目昆虫的两大支系,其活动规律存在显著差异,蝴蝶白天活动,而蛾子则主要是夜间活动。有研究表明视觉对蝴蝶的行为活动有非常重要的作用,而夜行性蛾子的行为活动依赖视觉的程度还是一个尚待解决的问题。中国科学院成都生物研究所系统进化与保育学科组与中国农科院北京植保所昆虫生物学重点实验室合作,研究蛾子的视觉基因是否由于夜行性而发生了改变。研究人员从12个蛾类物种中分别克隆了红光、蓝光和紫外3类视觉基因,在这3类基因中都发现了较强的净化选择作用,说明基因功能的改变受到了限制。基因定量表达研究发现,经过光
Visual is one of the most important means of communication for animals, and its evolutionary history has always been of concern to scholars. Butterflies and moths are two branches of Lepidoptera, whose activities are significantly different, butterflies are active during the day and moths are mainly night activities. Studies have shown that vision has a very important role in the behavior of butterflies, and the degree of visual dependence of nocturnal behavior of moths is still a problem to be solved. Chinese Academy of Sciences, Chengdu Institute of Biology, Department of Evolution and Conservation Section and the Chinese Academy of Agricultural Sciences Beijing Institute of Entomology Key Laboratory of Entomology to study whether the visual moth gene due to the nocturnal changes have taken place. Researchers cloned three kinds of visual genes of red, blue and ultraviolet respectively from 12 moth species, and found strong purification selection in all three kinds of moths, which indicated that the change of gene function was limited. Gene quantitative expression study found that after light