Parallel and nonparallel aspects of ecological, phenotypic, and genetic divergence across replicate population pairs of lake and stream stickleback.
Parallel and nonparallel aspects of ecological, phenotypic, and genetic divergence across replicate population pairs of lake and stream stickleback.
复制标题
DOI：
10.1111/j.1558-5646.2011.01440.x
复制
发表时间：
2012-02
期刊：
影响因子：
--
通讯作者：
Hendry AP
中科院分区：
文献类型：
--
作者：
Kaeuffer R;Peichel CL;Bolnick DI;Hendry AP
趋同（或平行）进化为自然选择的决定性作用提供了强有力的证据：当独立的种群在相似的环境中定居时，相似的表型会进化。然而，在现实中，相似环境中的独立种群总是表现出一些差异：存在一些非趋同进化。因此，重要的是要明确量化的收敛和非收敛方面的性状变异，并调查每个生态和遗传的解释。我们进行了这样的分析三刺鱼（Gasterosteus aculeatus）人口居住在湖泊和溪流栖息地在独立的流域。形态特征不同的程度湖流分歧跨流域收敛。这种变化的某些方面与饮食相关的生态变量相关，大概反映了分歧选择的强度和细节。此外，基因扫描揭示了一些标记，在许多流域的湖泊和溪流之间的分歧和一些分歧，只有在少数流域。此外，一些湖溪分化的遗传标记相关的一些湖溪分化的形态性状。我们的研究结果表明，趋同进化，偏离它，主要是自然选择的结果，这对应于在某些方面经常使用的二分法栖息地分类在这样的研究。
Convergent (or parallel) evolution provides strong evidence for a deterministic role of natural selection: similar phenotypes evolve when independent populations colonize similar environments. In reality, however, independent populations in similar environments always show some differences: some non-convergent evolution is present. It is therefore important to explicitly quantify the convergent and non-convergent aspects of trait variation, and to investigate the ecological and genetic explanations for each. We performed such an analysis for threespine stickleback (Gasterosteus aculeatus) populations inhabiting lake and stream habitats in independent watersheds. Morphological traits differed in the degree to which lake-stream divergence was convergent across watersheds. Some aspects of this variation were correlated with ecological variables related to diet, presumably reflecting the strength and specifics of divergent selection. Furthermore, a genetic scan revealed some markers that diverged between lakes and streams in many of the watersheds and some that diverged in only a few watersheds. Moreover, some of the lake-stream divergence in genetic markers was associated within some of the lake-stream divergence in morphological traits. Our results suggest that convergent evolution, and deviations from it, are primarily the result of natural selection, which corresponds in only some respect to the dichotomous habitat classifications frequently used in such studies.
登录
查看更多内容
影响因子：
3.3
作者：
Albert, Arianne Y. K.;Sawaya, Sterling;Schluter, Dolph
通讯作者：
Schluter, Dolph
DOI：
10.1111/j.1095-8312.2008.00978.x
发表时间：
2008-06-01
影响因子：
1.9
作者：
Bolnick, Daniel I.;Caldera, Eric J.;Matthews, Blake
通讯作者：
Matthews, Blake
影响因子：
4.9
作者：
Berner, Daniel;Roesti, Marius;Salzburger, Walter
通讯作者：
Salzburger, Walter
影响因子：
3.3
作者：
Berner, Daniel;Stutz, William E.;Bolnick, Daniel I.
通讯作者：
Bolnick, Daniel I.
影响因子：
2.1
作者：
Berner, D.;Adams, D. C.;Hendry, A. P.
通讯作者：
Hendry, A. P.