Lead is one of the most present contaminants in the environment, and different species respond differently to this type of pollution. If combined with genomic stress, lead may act synergistically, causing significant decrease of fitness components. We used two genetically diverse Drosophila subobscura populations (regarding both putatively adaptive inversion and microsatellite loci polymorphisms) originating from two ecologically distinct habitats. To establish different levels of genome heterozygosity, series of intraline, intrapopulation and interpopulation crosses were made. The progeny were reared on a standard medium and a medium with 200 e???g/mL of lead acetate. Development time was significantly extended to all groups reared on lead. The progeny of intraline crosses showed significantly extended development time compared to all other groups. The obtained results suggest that genome heterozygosity reduces the effect of lead pollution.
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机译：铅是环境中最常见的污染物之一，不同种类的铅对这种污染的反应也不同。如果与基因组压力相结合，铅可能会协同作用，导致健身成分显着下降。我们使用了来自两个生态上不同的生境的两个遗传上不同的果蝇亚种种群（关于既定的适应性倒置和微卫星基因座多态性）。为了建立不同水平的基因组杂合性，进行了系列内，种群内和种群间杂交的系列。将后代饲养在标准培养基和具有200e / g / mL乙酸铅的培养基上。开发时间显着延长了所有以铅饲养的群体。与所有其他组相比，种内杂交的后代显示出显着延长的发育时间。获得的结果表明基因组杂合性降低了铅污染的影响。
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