Half-sib analysis of three morphological traits in Drosophila melanogaster under poor nutrition

被引:20
作者
Bubliy, OA
Imasheva, AG
Loeschcke, V
机构
[1] Aarhus Univ, Dept Ecol & Genet, DK-8000 Aarhus, Denmark
[2] NI Vavilov Gen Genet Res Inst, Moscow 117809, Russia
来源
HEREDITAS | 2000年 / 133卷 / 01期
关键词
D O I
10.1111/j.1601-5223.2000.00059.x
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Variation in thorax length, wing length and sternopleural bristle number was examined in Drosophila melanogaster reared in stressful and nonstressful environments using paternal half-sib design. Low concentration of yeast in the medium was used as a stress Factor. Phenotypic variation of thorax length and wing length was higher under poor nutrition than in the control: in bristle number, phenotypic variation was relatively stable regardless of the environment. Heritability of all the traits analyzed was generally lower under nutritional stress. Heritability changes in thorax length and wing length were mainly due to an increase in the environmental variance under stress, whereas in bristle number, stress resulted in a decrease in genetic variation. Genetic variance in thorax length was higher under poor nutrition. in wing length, no difference in genetic variance between environments was Found.
引用
收藏
页码:59 / 63
页数:5
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