Species divergence and repeated ancient hybridization in a Sulawesian lake system
Species divergence and repeated ancient hybridization in a Sulawesian lake system
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苏拉威西亚湖泊系统中的物种分化和重复的古代杂交
DOI：
10.1111/jeb.13932
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发表时间：
2021
影响因子：
2.1
通讯作者：
Kazunori Yamahira
中科院分区：
文献类型：
--
作者：
Ixchel F. Mandagi;Ryo Kakioka;Javier Montenegro;Hirozumi Kobayashi;Kawilarang W. A. Masengi;Nobuyuki Inomata;Atsushi J. Nagano;Atsushi Toyoda;Satoshi Ansai;Masatoshi Matsunami;Ryosuke Kimura;Jun Kitano;Junko Kusumi;Kazunori Yamahira
越来越多的实证研究表明，远缘谱系之间的杂交可能促进了不同分类群的物种形成。然而，在许多情况下，渐渗杂交的时间、程度和方向仍然未知。在这里，我们报告了一个可能的案例，重复杂交促进了Wallacea岛苏拉威西岛foryziasricfish （Adrianichthyidae）的分化。在苏拉威西中部由5个构造湖泊组成的马里里湖系统中，有4种oryzias属特有种；其中一个湖中居住着两种物种。全基因组单核苷酸多态性的形态学和种群基因组分析表明，这两个同域物种在系统发育上是姐妹的，但在生殖上彼此隔离。混合分析和人口统计学模型的比较表明，这两个同域物种经历了几次来自外群种群的大量渗透，这些渗透可能发生在它们在湖中进行二次接触之后不久。然而，据估计，来自外群的移民比例在两个物种之间是不同的，这与这些渗入有助于它们的分化或阻止它们形成杂交群体的假设是一致的。湖泊的反复破碎和融合可能促进了这个古老湖泊系统特有的淡水鱼种类的多样化。摘要人口统计学模型的混合分析和比较表明，在Wallacea岛苏拉威西岛中部的Malili湖系统中，oryziasricfish （Adrianichthyidae）存在着大量的相互渗透现象。湖泊的反复破碎和融合可能促进了这个古老湖泊系统特有的淡水鱼种类的多样化。
An increasing volume of empirical studies demonstrated that hybridization between distant lineages may have promoted speciation in various taxa. However, the timing, extent and direction of introgressive hybridization remain unknown in many cases. Here, we report a possible case in which repeated hybridization promoted divergence ofOryziasricefishes (Adrianichthyidae) on Sulawesi, an island of Wallacea. FourOryziasspecies are endemic to the Malili Lake system in central Sulawesi, which is composed of five tectonic lakes; of these, one lake is inhabited by two species. Morphological and population genomic analyses of genome‐wide single‐nucleotide polymorphisms revealed that these two sympatric species are phylogenetically sister to but substantially reproductively isolated from each other. Analyses of admixture and comparison of demographic models revealed that the two sympatric species experienced several substantial introgressions from outgroup populations that probably occurred soon after they had secondary contact with each other in the lake. However, the ratio of migrants from the outgroups was estimated to be different between the two species, which is consistent with the hypothesis that these introgressions aided their divergence or prevented them from forming a hybrid swarm. Repeated lake fragmentations and fusions may have promoted diversification of this freshwater fish species complex that is endemic to this ancient lake system.AbstractAnalyses of admixture and comparison of demographic models revealed thatOryziasricefishes (Adrianichthyidae) in the Malili Lake system in central Sulawesi, an island of Wallacea, experienced substantial introgressions from each other. Repeated lake fragmentations and fusions may have promoted diversification of this freshwater fish species complex that is endemic to this ancient lake system.
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“苏拉威西亚湖泊系统中的物种分化和重复的古代杂交”决定函
DOI：
10.1111/jeb.13932/v1/decision1
发表时间：
2020
期刊：
--
影响因子：
--
作者：
B. Buzan;R. Little
通讯作者：
R. Little
DOI：
10.1098/rspb.2019.1621
发表时间：
2019-10-23
影响因子：
4.7
作者：
Selz, O. M.;Seehausen, O.
通讯作者：
Seehausen, O.
影响因子：
64.8
作者：
Kautt AF;Kratochwil CF;Nater A;Machado-Schiaffino G;Olave M;Henning F;Torres-Dowdall J;Härer A;Hulsey CD;Franchini P;Pippel M;Myers EW;Meyer A
通讯作者：
Meyer A
影响因子：
10.7
作者：
Kumar, Sudhir;Stecher, Glen;Tamura, Koichiro
通讯作者：
Tamura, Koichiro
影响因子：
6.5
作者：
Brooks, J. L.
通讯作者：
Brooks, J. L.