COMPETITIVE INTERACTIONS IN DROSOPHILA-MELANOGASTER - RECURRENT SELECTION FOR AGGRESSION AND RESPONSE
COMPETITIVE INTERACTIONS IN DROSOPHILA-MELANOGASTER - RECURRENT SELECTION FOR AGGRESSION AND RESPONSE
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DOI：
10.1038/hdy.1988.19
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发表时间：
1988-02-01
期刊：
影响因子：
3.8
通讯作者：
EGGLESTON, P
中科院分区：
文献类型：
--
作者：
HEMMAT, M;EGGLESTON, P
高响应和低聚集的循环选择程序已在德克萨斯州的黑腹果蝇种群中采用。这次调查得出了五个要点。首先，在遗传异质文化中发生的竞争性相互作用的攻击和反应成分表现出广泛的遗传变异。其次，这种相互作用的两个组成部分，即攻击和反应，可以通过选择特定的基因组来调整。第三，早期世代中选定成分的快速变化表明，大量的加性遗传变异参与了攻击和反应的控制。对整个选择程序所实现的遗传力的估计进一步支持了这一点，低攻击性和高响应选择的遗传力分别为 0.79 和 0.74。第四，攻击性和反应性的变化迅速接近平台期表明，早期世代的这种变化主要是由于主要染色体作为单位的分类所致。第五，得出的结论是，攻击和反应并不是完全独立或依赖的。结果表明，单个基因阵列可能负责决定这两个性状。观察到的结果将与这些基因中的某些基因相一致，这些基因对攻击性的影响比对反应的影响大得多。
Recurrent selection programmes for both high response and low aggregation have beem employed in the Texas population of Drosophila melanogaster. Five main points have emerged from this investigation. First, the population exhibits extensive genetic variation for the aggression and response components of competitive interactions which take place in genetically heterogeneous cultures. Secondly, the two components of such interactions, namely aggression and response, can be adjusted by the selection of particular groups of genes. Thirdly, the rapid change in the selected components in the early generations suggests that a considerable amount of additive genetic variation is involved in the control of aggression and response. This is further supported by estimates of the realised heritability taken over the whole selection programme which amount to 0.79 and 0.74 for the low aggresssion and high response selections respectively. Fourthly, the rapidity with which changes in aggression and response approached plateaux suggests that such changes in the earlier generations are primarily due to the assortment of major chromosomes as units. Fifthly, it was concluded that aggression and response do not behave entirely independently or dependently. The results suggest that a single array of genes might be responsible for the determination of both characters. The observed results would then be consistent with certain of these genes having a much larger effect on aggression than they do on response.