Protein and carbohydrate composition of larval food affects tolerance to thermal stress and desiccation in adult Drosophila melanogaster
Protein and carbohydrate composition of larval food affects tolerance to thermal stress and desiccation in adult Drosophila melanogaster
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DOI：
10.1016/j.jinsphys.2009.11.006
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发表时间：
2010-04-01
影响因子：
2.2
通讯作者：
Mayntz, David
中科院分区：
文献类型：
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作者：
Andersen, Laila H.;Kristensen, Torsten N.;Mayntz, David
幼虫营养可能会影响一系列不同的生活史性状以及对环境胁迫的反应。在这里，我们测试是否提高幼虫的果蝇，果蝇，对两种不同的营养制度影响耐冷，热和干燥，以及产卵和蛋成人的生存能力。我们提出了幼虫的碳水化合物丰富和蛋白质丰富的生长培养基。我们发现，苍蝇开发的高蛋白质培养基上增加了耐热性和干燥性相比，苍蝇开发的碳水化合物丰富的培养基。相比之下，在富含碳水化合物的生长培养基上发育的果蝇从寒冷昏迷应激中恢复得更快，而在富含蛋白质的培养基上发育的果蝇则恢复得更快。我们还发现了应激耐受性的性别差异，与雄性相比，雌性果蝇对寒冷昏迷、热击倒和干燥应激的耐受性更强。在富含蛋白质的培养基上发育的雌性中产蛋量最高。然而，营养对卵子到成虫的生存能力存在性别特异性影响，在富含蔗糖的培养基上发育的雄性存活率更高，而在富含蛋白质的培养基上发育的雌性存活率最高。我们的研究表明，幼虫的营养有很大的影响，以科普压力的能力，最佳的营养成分随压力的类型。(C)2009爱思唯尔有限公司保留所有权利。
Larval nutrition may affect a range of different life history traits as well as responses to environmental stress in adult insects. Here we test whether raising larvae of fruit flies, Drosophila melanogaster, on two different nutritional regimes affects resistance to cold, heat and desiccation as well as egg production and egg-to-adult viability. We raised larvae on a carbohydrate-enriched and a protein-enriched growth medium. We found that flies developed on the high protein medium had increased heat and desiccation tolerance compared to flies developed on the carbohydrate-enriched medium. In contrast, flies developed on the carbohydrate-enriched growth medium recovered faster from chill coma stress compared to flies developed on a protein-enriched medium. We also found gender differences in stress tolerance, with female flies being more tolerant to chill coma, heat knockdown and desiccation stress compared to males. Egg production was highest in females that had developed on the protein-enriched medium. However, there was a sex-specific effect of nutrition on egg-to-adult viability, with higher viability for males developing on the sucrose-enriched medium, while female survival was highest when developing on the protein-enriched medium. Our study indicates that larval nutrition has a strong impact on the ability to cope with stress, and that the optimal nutrient composition varies with the type of stress. (C) 2009 Elsevier Ltd. All rights reserved.