Hemmat M, Eggleston P
Department of Genetics, University of Liverpool.
Heredity (Edinb). 1988 Dec;61 ( Pt 3):347-54. doi: 10.1038/hdy.1988.125.
Interference, which is one of two aspects of the process of competition which take place in genetically heterogeneous mixtures has been studied in the Texas population of Drosophila melanogaster. Both survival and mean adult weight were investigated in the population itself (which displays high levels of aggression and little response) and in LA, a genotype derived from the population (which displays low aggression and high levels of response) in both homotypically and heterotypically conditioned media. The results presented here show that the competitive effects of conditioning depend not only on the concentration of the conditioned medium but also on the genotype of the larvae which conditioned the medium and that of the flies which respond to such media. It was also concluded that medium conditioning is one of a range of biological parameters involved in the determination of the aggression and response components of the competitive interaction among Drosophila larvae. Thus the competitive fitness of a genotype of D. melanogaster is related not only to genetic variation for aggression and response but also to genetic variation in the ability to condition media and the sensitivity to such media.
干扰是在基因异质混合物中发生的竞争过程的两个方面之一，已经在德克萨斯州的黑腹果蝇种群中进行了研究。在同型和异型条件培养基中，对种群本身（表现出高水平的攻击性和低反应性）以及从该种群衍生的基因型LA（表现出低攻击性和高反应性）的成虫存活率和平均体重进行了调查。此处呈现的结果表明，条件培养基的竞争效应不仅取决于条件培养基的浓度，还取决于调节培养基的幼虫基因型以及对这种培养基作出反应的果蝇基因型。研究还得出结论，培养基调节是一系列生物学参数之一，这些参数参与了果蝇幼虫间竞争相互作用中攻击性和反应性成分的决定。因此，黑腹果蝇基因型的竞争适应性不仅与攻击性和反应性的遗传变异有关，还与调节培养基的能力以及对此类培养基的敏感性的遗传变异有关。
