Phenotypic plasticity and reaction norms of abdominal bristle number in Drosophila melanogaster

Journal of biosciences

Jean R David1¹  Brigitte Moreteau¹ 

[1] Laboratoire Génétique, Populations et Evolution, Centre National de la Recherche Scientifique, 91190 Gif sur Yvette Cedex, France$$

关键词: Genetic correlations;    growth temperature;    heritability;    isofemale lines;    phenotypic correlation;    reaction norms;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

The phenotypic plasticity of abdominal bristle number (segments 3 and 4 in females) was investigated in 10 isofemale lines from a French population, grown at 7 constant temperatures, ranging from 12° to 31°C. Overall concave reaction norms were obtained with a maximum around 20°–21°C. Intraclass correlation (isofemale line heritability) was not affected by temperature. Correlations between segments 3 and 4 strongly contrasted a low within-line phenotypic correlation (𝑟 = 0.39 ± 0.04) and a high, between-line genetic correlation (𝑟 = 0.89 ± 0.03). A significant decrease of the genetic correlation was observed when comparing more different temperatures. Finally, among 7 other morphometrical traits which were measured on the same set of lines, 3 provided a significant positive genetic correlation with abdominal bristles: thoracic bristles, abdomen pigmentation and thoracic pigmentation.

【 授权许可】

Unknown