Variation in sexual dimorphism and assortative mating do not predict genetic divergence in the sexually dimorphic Goodeid fish Girardinichthys multiradiatus
Variation in sexual dimorphism and assortative mating do not predict genetic divergence in the sexually dimorphic Goodeid fish Girardinichthys multiradiatus
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性二态性和选型交配的变化并不能预测性二态性古德鱼 Girardinichthys multiradiatus 的遗传分化
DOI：
10.1093/czoolo/58.3.440
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发表时间：
2012
期刊：
影响因子：
2.2
通讯作者：
Ritchie M
中科院分区：
文献类型：
--
作者：
Ritchie M
在性选择和多样化的比较研究中，性二态性经常被用作性选择强度的代表。墨西哥古迪亚科是一组生活性淡水鱼类，种间的两性异形差异很大。以前，我们发现的物种之间的形态性别二型性的变化和数量的基因流在人群中的Goodeinae之间的关联。在这里，我们已经检查，如果在一个单一的二型物种的形态分化与种群之间的交配或基因流。在阿马里洛鱼中，多辐射Girardinichthys研究表明，雄性夸张的鳍是雌性偏好的目标。我们发现，种群的物种不同的水平，由于男性比女性形态的差异更快的进化显示的性二型。然而，这并不能预测在实验室中的交配试验的变化;事实上，男性形态的差异与交配呈负相关。微卫星标记揭示了居群间显著的遗传差异。然而，基因流是不能预测的形态差异或间接交配。相反，它显示了一种因距离而孤立的格局，流域之间的差异更大。我们讨论的警告预测行为和遗传的分歧，从所谓的代理性选择。
Sexual dimorphism is often used as a proxy for the intensity of sexual selection in comparative studies of sexual selection and diversification. The Mexican Goodeinae are a group of livebearing freshwater fishes with large variation between species in sexual dimorphism in body shape. Previously we found an association between variation in morphological sexual dimorphism between species and the amount of gene flow within populations in the Goodeinae. Here we have examined if morphological differentiation within a single dimorphic species is related to assortative mating or gene flow between populations. In the Amarillo fishGirardinichthys multiradiatusstudies have shown that exaggerated male fins are targets of female preferences. We find that populations of the species differ in the level of sexual dimorphism displayed due to faster evolution of differences in male than female morphology. However, this does not predict variation in assortative mating tests in the laboratory; in fact differences in male morphology are negatively correlated with assortative mating. Microsatellite markers reveal significant genetic differences between populations. However, gene flow is not predicted by either morphological differences or assortative mating. Rather, it demonstrates a pattern of isolation by distance with greater differentiation between watersheds. We discuss the caveats of predicting behavioural and genetic divergence from so-called proxies of sexual selection.
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射线鳍鱼的交配偏好、性选择和分支发生模式
影响因子：
2.1
作者：
J. Mank
通讯作者：
J. Mank
孔雀鱼（Poecilia reticulata）的紫外线视觉和配偶选择
影响因子：
2.4
作者：
El Smith;J. Partridge;KN Parsons;Elizabeth M. White;I. Cuthill;A. Bennett;S. Church
通讯作者：
S. Church
影响因子：
10
作者：
Kraaijeveld, Ken;Kraaijeveld-Smit, Femmie J. L.;Maan, Martine E.
通讯作者：
Maan, Martine E.
DOI：
10.1098/rspb.1995.0031
发表时间：
1995-02-22
影响因子：
4.7
作者：
BARRACLOUGH, TG;HARVEY, PH;NEE, S
通讯作者：
NEE, S
影响因子：
2.1
作者：
Gonzalez-Voyer, A.;Kolm, N.
通讯作者：
Kolm, N.