Reproductive isolation between two darter species is enhanced and asymmetric in sympatry: enhanced reproductive isolation in sympatry
Reproductive isolation between two darter species is enhanced and asymmetric in sympatry: enhanced reproductive isolation in sympatry
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两个蛇鲈物种之间的生殖隔离在同域中增强且不对称：同域中增强的生殖隔离
DOI：
10.1111/jfb.12364
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发表时间：
2014
影响因子：
2
通讯作者：
Fuller, R. C.
中科院分区：
文献类型：
--
作者：
Zhou, M.;Fuller, R. C.
与异种杂交相比，同种雄性和雌性杂交产生的后代更多，因此彩虹飞镖与橙色飞镖之间存在着很强的生殖隔离。此外，含有共性E的异种杂交产生的卵子也较少。比使用allopatricE的更多。Spectabilemales，而异种杂交没有观察到类似的模式。雌性。这些结果表明，加强，即选择由降低的杂交适合度驱动的合子前生殖障碍，可能有助于进化和维持这些潜在的杂交物种之间的共生生殖障碍。
Robust reproductive isolation was found between the rainbow darterEtheostoma caeruleumand the orangethroat darterEtheostoma spectabile, as more offspring were produced when conspecific males and females were crossed as compared with heterospecific crosses. Furthermore, fewer eggs resulted from heterospecific crosses involving sympatricE. spectabilefemales than those using allopatricE. spectabilefemales, while a similar pattern was not observed in heterospecific crosses usingE. caeruleumfemales. These results suggest that reinforcement,i.e.selection for pre‐zygotic reproductive barriers driven by reduced hybrid fitness, may have contributed to the evolution and maintenance of reproductive barriers between these potentially hybridizing species in sympatry.