Wolbachia effects in Drosophila melanogaster:: in search of fitness benefits

被引:71
作者
Harcombe, W [1 ]
Hoffmann, AA
机构
[1] Univ Texas, Sect Integrat Biol, Austin, TX 78712 USA
[2] La Trobe Univ, CESAR, Bundoora, Vic 3086, Australia
基金
澳大利亚研究理事会;
关键词
Wolbachia; Drosophila melanogaster; endosymbiont; fitness; stress; heat; nutrition;
D O I
10.1016/j.jip.2004.07.003
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Insect endosymbionts often influence host nutrition but these effects have not been comprehensively investigated in Wolbachia endosymbionts that are widespread in insects. Using strains of Drosophila melanogaster with the wMel Wolbachia infection, we showed that Wolbachia did not influence adult starvation resistance. Wolbachia also had no effect on larval development time or the size of emerging adults from a low nutrition medium. While Wolbachia may influence the expression of heat shock proteins, we found that there was no effect on adult heat resistance when tested in terms of survival or virility following heat stress. The absence of nutrition or stress effects suggests that other processes maintain ivMel frequencies in natural populations of Drosophila melanogaster. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:45 / 50
页数:6
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