Divergent selection on opsins drives incipient speciation in Lake Victoria cichlids.
Divergent selection on opsins drives incipient speciation in Lake Victoria cichlids.
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DOI:
10.1371/journal.pbio.0040433
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发表时间:
2006-12
期刊:
影响因子:
9.8
通讯作者:
Okada N
中科院分区:
文献类型:
--
作者:
Terai Y;Seehausen O;Sasaki T;Takahashi K;Mizoiri S;Sugawara T;Sato T;Watanabe M;Konijnendijk N;Mrosso HD;Tachida H;Imai H;Shichida Y;Okada N
Divergent natural selection acting on ecological traits, which also affect mate choice, is a key element of ecological speciation theory, but has not previously been demonstrated at the molecular gene level to our knowledge. Here we demonstrate parallel evolution in two cichlid genera under strong divergent selection in a gene that affects both. Strong divergent natural selection fixed opsin proteins with different predicted light absorbance properties at opposite ends of an environmental gradient. By expressing them and measuring absorbance, we show that the reciprocal fixation adapts populations to divergent light environments. The divergent evolution of the visual system coincides with divergence in male breeding coloration, consistent with incipient ecological by-product speciation. The rapid evolution of African cichlid fish driven by strong divergent selection is revealed in a gene that is responsible for ecological adaptation. This gene also affects mate choice and is thus consistent with incipient ecological by-product speciation.
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影响因子:
10.7
作者:
Charlesworth, B
通讯作者:
Charlesworth, B
影响因子:
4.1
作者:
Murata, Y;Nikaido, M;Okada, N
通讯作者:
Okada, N
影响因子:
9.2
作者:
Parry, JWL;Carleton, KL;Bowmaker, JK
通讯作者:
Bowmaker, JK
影响因子:
64.8
作者:
Hawthorne, DJ;Via, S
通讯作者:
Via, S
DOI:
10.1073/pnas.0509685103
发表时间:
2006-04-25
影响因子:
11.1
作者:
Kronforst, MR;Young, LG;Gilbert, LE
通讯作者:
Gilbert, LE