Evolution of faster development does not lead to greater fluctuating asymmetry of sternopleural bristle number in Drosophila

Journal of genetics

M. Rajamani¹  N. G. Prasad¹  Mallikarjun Shakarad¹  Amitabh Joshi1¹ 

[1] development time and FA are uncorrelated,$$

关键词: sternopleural bristle;    developmental stability;    evolution;    canalization;    fluctuating asymmetry;    Drosophila melanogaster.;   

DOI  :  

学科分类：生物科学（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Both strong directional selection and faster development are thought to destabilize development, giving rise to greater fluctuating asymmetry (FA), although there is no strong empirical evidence supporting this assertion. We compared FA in sternopleural bristle number in four populations of Drosophila melanogaster successfully selected for faster development from egg to adult, and in four control populations. The fraction of perfectly symmetric individuals was higher in the selected populations, whereas the FA levels did not differ significantly between selected and control populations, clearly indicating that directional selection for faster development has not led to increased FA in sternopleural bristle number in these populations. This may be because:development time and FA are uncorrelated,

【 授权许可】

Unknown