Imasheva A G, Zhivotovsky L A, Lazebny O E
N.I. Vavilov Institute of General Genetics, Acad. Sci. USSR, Moscow.
Genetica. 1991;83(3):247-56. doi: 10.1007/BF00126231.
Stabilizing selection for a set of morphometric wing traits was combined with directional selection for the increased expression of radius incompletus (ri) mutation of Drosophila melanogaster. Three experimental regimes were used: directional and stabilizing selection (stabilized lines); directional selection (unstabilized lines); no selection (controls). Response to selection for ri expression was similar in all selected lines but variation of this character was higher in the unstabilized lines compared to the stabilized ones. The competitive indices measured after termination of selection did not significantly differ under different treatments while fluctuating asymmetry was significantly lower in stabilized than in unstabilized lines. The possible causes of these differences are discussed.
对一组形态测量的翅膀性状进行稳定选择，并结合对黑腹果蝇不完全半径（ri）突变表达增加的定向选择。使用了三种实验方案：定向和稳定选择（稳定品系）；定向选择（不稳定品系）；不进行选择（对照）。所有选定品系对ri表达的选择反应相似，但与稳定品系相比，该性状在不稳定品系中的变异更高。选择终止后测量的竞争指数在不同处理下没有显著差异，而稳定品系中的波动不对称性明显低于不稳定品系。讨论了这些差异的可能原因。
