Differences in offspring size predict the direction of isolation asymmetry between populations of a placental fish

Differences in offspring size predict the direction of isolation asymmetry between populations of a placental fish
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后代大小的差异预测胎盘鱼种群之间隔离不对称的方向

DOI:
10.1098/rsbl.2013.0327
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发表时间:
2013
期刊:
影响因子:
3.3
通讯作者:
Travis, J.
Travis, J.
中科院分区:
生物学2区
文献类型:
--
作者:
Schrader, M.;Fuller, R. C.;Travis, J.

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在种群或物种之间的杂交往往表现出不对称的适合度。这种模式,被称为隔离不对称或达尔文对霍尔丹规则的推论,已经在从植物到脊椎动物的分类群中观察到,但我们仍然不知道是哪些因素决定了它的大小和方向。在这里,我们显示后代大小的差异预测分离不对称的方向,观察到在胎盘鱼,台湾异种。在后代大小不同的种群之间的杂交中,只有当母亲来自以后代小为特征的种群时,才会出现高的杂种不育率。种群之间的杂交显示出相似大小的后代,无论是大的还是小的,都不会导致高水平的杂交不育。我们认为这种不对称的生殖隔离模式是由于在不同种群中选择不同大小的后代而产生的亲子共同适应的破坏。
Crosses between populations or species often display an asymmetry in the fitness of reciprocalF1hybrids. This pattern, referred to as isolation asymmetry or Darwin's Corollary to Haldane's Rule, has been observed in taxa from plants to vertebrates, yet we still know little about which factors determine its magnitude and direction. Here, we show that differences in offspring size predict the direction of isolation asymmetry observed in crosses between populations of a placental fish,Heterandria formosa. In crosses between populations with differences in offspring size, high rates of hybrid inviability occur only when the mother is from a population characterized by small offspring. Crosses between populations that display similarly sized offspring, whether large or small, do not result in high levels of hybrid inviability in either direction. We suggest this asymmetric pattern of reproductive isolation is due to a disruption of parent–offspring coadaptation that emerges from selection for differently sized offspring in different populations.
DOI: 10.1643/ce-04-230r
发表时间: 2005
期刊: Copeia
影响因子: 2.6
作者:
Matthew Schrader;J. Travis
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DOI: 10.1086/592999
发表时间: 2008-12-01
影响因子: 2.9
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DOI: 10.1002/ece3.255
发表时间: 2012-07
影响因子: 2.6
作者:
Schrader, Matthew;Travis, Joseph
通讯作者: Travis, Joseph
DOI: 10.1086/491687
发表时间: 2005-10-01
影响因子: 2.9
作者:
Kölliker, M;Brodie, ED;Moore, AJ
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DOI: --
发表时间: 1998
期刊: Evolution; international journal of organic evolution
影响因子: --
作者:
J. Wolf;E. Brodie
通讯作者: E. Brodie