Artificial selection for a courtship signal in Drosophila melanogaster
Artificial selection for a courtship signal in
Drosophila melanogaster
复制标题
果蝇求偶信号的人工选择
DOI：
10.1006/anbe.1996.0201
复制
发表时间：
1996
期刊：
影响因子：
2.5
通讯作者：
C. Kyriacou
中科院分区：
文献类型：
--
作者：
M. Ritchie;C. Kyriacou
雄性果蝇鸣声的平均脉冲间隔是一种求偶信号，在自然种群中变异性较小，对雄性果蝇的求偶成功具有重要意义。对这一性状进行了六代的人工选择，产生了一系列的苍蝇，这些苍蝇的平均脉冲间隔超出了该物种的正常范围。所用的股票是来自自然群体中，其他研究表明，这一性状的遗传力低的同雌株系。对选择的反应是不对称的，脉冲间隔越长，反应越大。对品系之间其他变化的分析表明，选择的基因对脉冲间隔有相当特异性的作用，减少了平均脉冲间隔和产生的脉冲数。F2代和回交世代的分析表明，多基因加性结构没有显着的非加性成分或不成比例的作用，性连锁基因的平均脉冲间隔。与预期相反，方差在F1大于F2或回交世代，实现遗传力远大于进化力（加性遗传变异系数）。结果表明，低变异性的行为特征仍然保留了快速进化的潜力，这可能是因为环境来源的变异抵消了固定。? 1996年动物行为研究协会
The mean inter-pulse interval of the song of maleDrosophila melanogasteris a courtship signal which shows relatively little variability in natural populations and is important to male mating success. Artificial selection was carried out on this trait for six generations, producing a line of flies that had a mean inter-pulse interval outside the normal range for the species. The stock used was derived from isofemale lines taken from a natural population in which other studies had suggested heritability for this trait was low. The response to selection was asymmetric, with a greater response for longer inter-pulse interval. Analysis of other changes between the lines suggests that the genes selected for act fairly specifically on inter-pulse interval, reducing both the mean inter-pulse interval and the number of pulses produced. Analysis of F2 and back-cross generations suggested a polygenic additive architecture without a significant non-additive component or disproportionate role of sex-linked genes on mean inter-pulse interval. Contrary to expectations, variance was greater in the F1 than in F2 or back-cross generations, and the realized heritability was much greater than the evolvability (coeYcient of additive genetic variation). The results suggest that behavioural traits with low variability still retain the potential for rapid evolution, perhaps because environmental sources of variation counteract fixation. ? 1996 The Association for the Study of Animal Behaviour
影响因子：
3.3
作者：
D. Houle
通讯作者：
D. Houle
影响因子：
56.9
作者：
WHEELER, DA;KYRIACOU, CP;HALL, JC
通讯作者：
HALL, JC