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首页> 美国卫生研究院文献>Genetics >Patterns of Molecular Variation. II. Associations of Electrophoretic Mobility and Larval Substrate within Species of the DROSOPHILA MULLERI Complex
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Patterns of Molecular Variation. II. Associations of Electrophoretic Mobility and Larval Substrate within Species of the DROSOPHILA MULLERI Complex

机译：分子变异的模式。二。果蝇复合体物种内的电泳迁移率和幼虫底物的关联。

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摘要

Electromorphic variation among populations of Drosophila mojavensis, D. arizonensis and D. longicornis was examined for seven genetic loci. The average electrophoretic mobility for a population was used as the metric. D. mojavensis and D. arizonensis use larval substrates in different parts of their geographic ranges, while D. longicornis is more narrowly restricted to different species of the cactus Opuntia in different localities. There is marked electromorphic variation among populations of either D. mojavensis or D. arizonensis, and the bulk of this variation is accounted for by differences in laval substrate. There is somewhat less variation among populations of D. longicornis, and only a moderate portion of this is accounted for by larval substrate differences. There appears to be an association between the taxonomic diversity of the larval substrates and the electromorphic diversity of the Drosophila populations utilizing those substrates. Evidence is reviewed that suggests physiological mechanisms for these possibly adaptive associations.
机译：果蝇，亚利桑那州的D.longicornis和果蝇的种群之间的电态变异进行了调查的七个遗传位点。群体的平均电泳迁移率用作度量。 D. mojavensis和D. arizonensis在其地理范围的不同部分使用幼虫底物，而D. longicornis更狭窄地局限于不同地区的仙人掌仙人掌的不同物种。在Mo.avenue D.或D.mojavensis种群之间存在明显的电形态变化，并且这种变化的大部分是由淡紫色底物的差异引起的。 D. longicornis种群之间的差异较小，而其中仅中度部分是由幼虫底物差异引起的。幼虫底物的分类多样性与使用这些底物的果蝇种群的电形态多样性之间似乎存在关联。审查的证据表明这些可能的适应性协会的生理机制。

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