进化遗传学：从梦幻岛回不来了。
Evolutionary genetics: no coming back from neverland.
机构信息
Department of Ecology and Evolution, Center for Population Biology, University of California Davis, One Shields Ave, Davis, CA 95616, USA.
出版信息
Curr Biol. 2012 Dec 4;22(23):R1004-6. doi: 10.1016/j.cub.2012.10.040.
PMID:23218006
Abstract
Host-plant specialization plays a key role in insect evolution, but little is known about its molecular basis. A new paper shows that a cactus-feeding fly became restricted to its host by changes in an enzyme that converts dietary sterols into essential hormones.
摘要
寄主专化性在昆虫进化中起着关键作用，但对其分子基础知之甚少。一项新的研究表明，一种以仙人掌为食的蝇类由于一种将饮食中的固醇转化为必需激素的酶的变化而被限制在其宿主上。
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