Identification of doublesex alleles associated with the female-limited Batesian mimicry polymorphism in Papilio memnon.
Identification of doublesex alleles associated with the female-limited Batesian mimicry polymorphism in Papilio memnon.
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DOI：
10.1038/srep34782
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发表时间：
2016-10-06
影响因子：
4.6
通讯作者：
Sota T
中科院分区：
文献类型：
--
作者：
Komata S;Lin CP;Iijima T;Fujiwara H;Sota T
凤蝶中雌性有限的贝氏拟态多态性是研究遗传多态性维持机制的一个有趣的系统。在凤蝶中，包含性别决定基因 doublesex 的常染色体区域控制着雌性有限的拟态多态性。在密切相关的物种 P. memnon 中，它也表现出雌性限制的贝氏拟态多态性，我们鉴定了双性基因的两个等位基因序列，它们与拟态和非拟态雌性表型完全对应。因此，P. memnon 拟态多态性的遗传基础与 P. polytes 相似。然而，两个物种的拟态和非拟态等位基因并不相同，并且等位基因的分化在P. memnon和P. polytes中独立发生。不同的突变选择过程可能导致这些凤蝶拟态多态性的趋同模式。
The female-limited Batesian mimicry polymorphism in Papilio butterflies is an intriguing system for investigating the mechanism of maintenance of genetic polymorphisms. In Papilio polytes, an autosomal region encompassing the sex-determinant gene doublesex controls female-limited mimicry polymorphism. In the closely related species P. memnon, which also exhibits female-limited Batesian mimicry polymorphism, we identified two allelic sequences of the doublesex gene that corresponded exactly with the mimetic and non-mimetic female phenotypes. Thus, the genetic basis of the mimicry polymorphism in P. memnon is similar to that in P. polytes. However, the mimetic and non-mimetic alleles of the two species were not identical, and the divergence of alleles occurred independently in P. memnon and P. polytes. Different mutation-selection processes may have resulted in the convergent patterns of mimicry polymorphism in these Papilio butterflies.
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