Female Remating in Drosophila ananassae: Bidirectional Selection for Remating Speed-猫眼课题宝

果蝇雌性再交配：再交配速度的双向选择

DOI：

发表时间：

2001

期刊：

Behavior Genetics

影响因子：

2.6

通讯作者：

中科院分区：

医学3区

文献类型：

作者：

Shree Ram Singh;B. N. Singh

在果蝇中，进行了10个世代的快速和缓慢人工选择。对选择的反应导致快系和慢系的两个重复在记忆时间上的快速差异。雌蜂的平均停留时间在快系、慢系和对照系之间有显著差异。快线和慢线的回归系数都明显不同于零。在10个世代的选择中，快系两个重复的实现遗传力为0.26~0.33，慢系的两个重复的遗传力为0.23~0.27。这些发现表明，在多基因控制下，雌性斑潜蝇的休眠时间。雌虫的记录频率在快线和慢线上都表现出相关反应。在第10代，还研究了对选择的相关反应。在Elens-Wattiaux交配室中观察了快线和慢线的水纹夜蛾的交配习性。平均每测15对，快系(11.20，11.60)比慢系(6.40，5.60)和对照(8.00)交配成功。一次交配雌株的繁殖力是以每雌产后代数来衡量的，生产力分析结果表明，快系(157.83,130.83)的后代产量高于慢系(72.7，85.83)和对照系(109.23)。

In Drosophila ananassae, artificial selection was carried out for fast and slow remating speed for 10 generations. Response to selection resulted in rapid divergence in remating time in each of two replicates of both fast and slow lines. There were significant differences in mean remating time in females among fast, slow, and control lines. Regression coefficients for both fast and slow lines are significantly different from zero. The realized heritability over 10 generations of selection is from 0.26 to 0.33 for two replicates of fast line and from 0.23 to 0.27 for two replicates of slow line. These findings suggest that female remating time in D. ananassae is under polygenic control. Remating frequency of females showed a correlated response in both fast and slow lines. At generation 10, correlated response to selection was also investigated. Mating propensity of D. ananassae of fast and slow lines was observed in an Elens-Wattiaux mating chamber. Fifteen pairs per test showed that on the average, the fast lines (11.20, 11.60) were more successful in mating than those of slow (6.40, 5.60) and control (8.00) lines. Productivity of once-mated females was measured in terms of number of progeny produced per female and the results of productivity analysis indicate that females of fast lines (157.83, 130.83) produced more progeny compared with slow (72.70, 85.83) and control (109.23) lines.

Multiple paternity in two natural populations (orchard and vineyard) of Drosophila.