The genetics of adaptation in Drosophila sechellia
The genetics of adaptation in Drosophila sechellia
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DOI：
10.1007/s10709-004-2728-6
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发表时间：
2005-02-01
期刊：
影响因子：
1.5
通讯作者：
Jones, CD
中科院分区：
文献类型：
--
作者：
Jones, CD
果蝇是塞舌尔特有的一种岛屿。在这些岛屿上的地理隔离之后，d.s echellia进化成一种寄生在Morinda citrifolia果实上的专家，Morinda citrifolia果实对果蝇来说通常是有害和排斥的。对柑橘的专门化需要进化出一套适应性，包括对这种水果中发现的一些毒素的抗性和偏好。其中一些适应性特征已经进行了基因研究。在这里，我总结了已知的这些性状的遗传学，并简要描述了形成这些性状进化的生态和地理背景。来自d.s echellia的数据表明，适应性并不像历史上认为的那样复杂，尽管几乎所有d.s echellia的适应性都涉及几个基因。
Drosophila sechellia is an island endemic of the Seychelles. After its geographic isolation on these islands, D. sechellia evolved into a host specialist on the fruit of Morinda citrifolia - a fruit often noxious and repulsive to Drosophila. Specialization on M. citrifolia required the evolution of a suite of adaptations, including resistance to and preference for some of the toxins found in this fruit. Several of these adaptive traits have been studied genetically. Here, I summarize what is known about the genetics of these traits and briefly describe the ecological and geographical context that shaped the evolution of these characters. The data from D. sechellia suggest that adaptations are not as genetically complex as historically thought, although almost all of the adaptations of D. sechellia involve several genes.