黑腹果蝇在高幼虫密度和低幼虫密度下对高温击倒抗性的选择
SELECTION FOR KNOCKDOWN RESISTANCE TO HEAT IN DROSOPHILA MELANOGASTER AT HIGH AND LOW LARVAL DENSITIES.
作者信息
Bubli Oleg A, Imasheva Alexandra G, Loeschcke Volker
机构信息
Vavilov Institute of General Genetics, Gubkin Street 3, 117809, Moscow, Russia.
Department of Ecology and Genetics, University of Aarhus, Ny Munkegade 540, DK-8000, Aarhus C, Denmark.
出版信息
Evolution. 1998 Apr;52(2):619-625. doi: 10.1111/j.1558-5646.1998.tb01661.x.
Responses to short-term selection for knockdown resistance to heat (37°C) in Drosophila melanogaster reared under stressful (high larval density) and nonstressful (low larval density) conditions were compared. No difference in selection response between density treatments was found. A test of heat resistance (39°C) after pretreatment (37°C) did not reveal an increase in survival for selected lines as compared to controls. Flies reared at high density had higher knockdown resistance throughout the experiment. Resistance to heat was not associated with body size.
比较了在应激（高幼虫密度）和非应激（低幼虫密度）条件下饲养的黑腹果蝇对热击倒抗性（37°C）的短期选择反应。未发现密度处理之间的选择反应有差异。在预处理（37°C）后进行的耐热性测试（39°C）未显示与对照相比，选择品系的存活率有所提高。在整个实验过程中，高密度饲养的果蝇具有更高的击倒抗性。耐热性与体型无关。
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