The genetic architecture of skeletal convergence and sex determination in ninespine sticklebacks.
The genetic architecture of skeletal convergence and sex determination in ninespine sticklebacks.
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DOI：
10.1016/j.cub.2009.05.029
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发表时间：
2009-07-14
期刊：
影响因子：
--
通讯作者：
Kingsley DM
中科院分区：
文献类型：
--
作者：
Shapiro MD;Summers BR;Balabhadra S;Aldenhoven JT;Miller AL;Cunningham CB;Bell MA;Kingsley DM
生命的历史提供了大量汇聚进化的例子，即在不同的谱系中独立派生出相似的表型。亲缘关系密切的谱系之间的趋同表型(通常被称为“平行”进化)通常被认为是相似基因或发育途径变化的结果，但趋同的遗传起源仍然知之甚少。尼氏刺鱼(Pungitius Pugitius)和刺鱼(Gastersteus Aculeatus)提供了许多适应表型在属内和属间收敛进化的例子。几个重要性状的遗传结构现在已知是三刺鱼；因此，九刺鱼提供了一个独特的机会来关键地测试是否相似或不同的染色体区域控制着这些谱系中的相似表型。我们已经为刺鱼绘制了第一个全基因组连锁图谱，并使用数量性状基因座(QTL)图谱来识别控制几个骨骼性状和性别决定的染色体区域。在九条刺鱼中，这些特征被映射到此前未知的染色体区域，以控制三条刺鱼的相应特征。因此，在这些相关但独立的脊椎动物谱系中，趋同的形态进化可能有不同的遗传起源。刺鱼的比较遗传学为研究不同动物群体中控制相似表型变化的机制提供了一个令人兴奋的机会。
The history of life offers plentiful examples of convergent evolution, the independent derivation of similar phenotypes in distinct lineages. Convergent phenotypes among closely related lineages (frequently termed “parallel” evolution) are often assumed to result from changes in similar genes or developmental pathways, but the genetic origins of convergence remains poorly understood. Ninespine (Pungitius pungitius) and threespine (Gasterosteus aculeatus) stickleback fish provide many examples of convergent evolution of adaptive phenotypes, both within and between genera. The genetic architecture of several important traits is now known for threespine sticklebacks; thus, ninespine sticklebacks thus provide a unique opportunity to critically test whether similar or different chromosome regions control similar phenotypes in these lineages. We have generated the first genome-wide linkage map for the ninespine stickleback and used quantitative trait locus (QTL) mapping to identify chromosome regions controlling several skeletal traits and sex determination. In ninespine sticklebacks, these traits mapped to chromosome regions not previously known to control the corresponding traits in threespine sticklebacks. Therefore, convergent morphological evolution in these related, but independent, vertebrate lineages may have different genetic origins. Comparative genetics in sticklebacks provides an exciting opportunity to study the mechanisms controlling similar phenotypic changes in different groups of animals.
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影响因子：
3.3
作者：
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通讯作者：
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影响因子：
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DOI：
10.1111/j.1095-8312.2008.01075.x
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