Behavioural isolation may facilitate homoploid hybrid speciation in cichlid fish
Behavioural isolation may facilitate homoploid hybrid speciation in cichlid fish
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行为隔离可能促进慈鲷的同倍体杂交物种形成
DOI：
10.1111/jeb.12287
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发表时间：
2014
影响因子：
2.1
通讯作者：
O. Seehausen
中科院分区：
文献类型：
--
作者：
O. Selz;R. Thommen;M. Maan;O. Seehausen
杂交物种形成受到来自亲本物种的基因流的干扰效应的限制。在没有交配后隔离由于基因组的结构变化，或时间或空间交配前隔离，另一种形式的生殖隔离将需要发生同倍体杂交物种形成。在这里，我们调查潜在的行为择偶产生杂交种和亲本物种之间的相互交配。我们在不同种类的非洲丽鱼之间进行了三个第一代杂交。在三向择偶实验中，我们让杂交和非杂交的雌性与杂交或非杂交的雄性交配。我们发现，杂交通常交配非随机和杂交可以导致新的组合的性状和偏好的行为隔离杂交从两个亲本物种的表达。具体来说，我们发现，杂交种的表型独特性预测其生殖隔离的对称性和程度。我们的数据表明，杂交种之间的行为择偶可能有助于建立孤立的杂交种群，即使在接近一个或两个亲本物种。
Hybrid speciation is constrained by the homogenizing effects of gene flow from the parental species. In the absence of post‐mating isolation due to structural changes in the genome, or temporal or spatial premating isolation, another form of reproductive isolation would be needed for homoploid hybrid speciation to occur. Here, we investigate the potential of behavioural mate choice to generate assortative mating among hybrids and parental species. We made three‐first‐generation hybrid crosses between different species of African cichlid fish. In three‐way mate‐choice experiments, we allowed hybrid and nonhybrid females to mate with either hybrid or nonhybrid males. We found that hybrids generally mated nonrandomly and that hybridization can lead to the expression of new combinations of traits and preferences that behaviourally isolate hybrids from both parental species. Specifically, we find that the phenotypic distinctiveness of hybrids predicts the symmetry and extent of their reproductive isolation. Our data suggest that behavioural mate choice among hybrids may facilitate the establishment of isolated hybrid populations, even in proximity to one or both parental species.
DOI：
10.1017/s0016672300032547
发表时间：
1994-08
期刊：
Genetical research
影响因子：
--
作者：
M. Slatkin;R. Lande
通讯作者：
M. Slatkin;R. Lande
影响因子：
3.1
作者：
Gross, BL;Rieseberg, LH
通讯作者：
Rieseberg, LH
影响因子：
3.4
作者：
Abbott, Richard J.;Hegarty, Matthew J.;Brennan, Adrian C.
通讯作者：
Brennan, Adrian C.