ADULT MALE NUTRITION AND REPRODUCTIVE SUCCESS IN DROSOPHILA MELANOGASTER
ADULT MALE NUTRITION AND REPRODUCTIVE SUCCESS IN DROSOPHILA MELANOGASTER
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DOI：
10.1111/j.1558-5646.2008.00515.x
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发表时间：
2008-12-01
期刊：
影响因子：
3.3
通讯作者：
Chapman, Tracey
中科院分区：
文献类型：
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作者：
Fricke, Claudia;Bretman, Amanda;Chapman, Tracey
在雄性果蝇中，受精液附属腺蛋白（Acps）影响的生殖性状变异维持的解释包括精子竞争结果的非传递性和/或所涉及性状的条件依赖性。我们研究了成年雄性的营养（五种饮食）对Acp和精子介导的性状表达的影响。我们发现了新的，非线性的影响，女性表现出较低的耐火性与男性举行的最低和最高酵母饮食交配后再交配。有没有显着的影响，成年男性的营养对男性的父系份额，但有一个显着的，非线性的影响，第二个男性后代的生产，与男性保持中间酵母饮食父亲的后代数量最多。生活史性状对营养的这种“钟形”反应以前只报道过长寿。与以前的报告一致，男性保持低蛋白饮食有较低的交配前成功，并获得较少的rematings与nonvirgins。我们显示了新的和身体大小独立的成年男性营养的影响Acps和精子，不适合目前的条件依赖性障碍模型，并可以影响这种健身相关的性状的性选择的强度的性状。
Explanations for the maintenance of variation in reproductive traits influenced by seminal fluid accessory gland proteins (Acps) in male Drosophila melanogaster include nontransitivity in the outcome of sperm competition and/or condition dependence of the traits involved. We investigated the effects of adult male nutrition (five diets) on the expression of Acp- and sperm- mediated traits. We found novel, nonlinear effects, with females showing lower levels of refractoriness to remating after mating with males held on the lowest and highest yeast diets. There were no significant effects of adult male nutrition on male paternity share, but there was a striking, nonlinear effect on second male progeny production, with males kept on intermediate yeast diets fathering the highest number of offspring. Such "bell shaped" responses of life-history traits to nutrition have only previously been reported for longevity. Consistent with previous reports, males maintained on low protein diets had lower premating success and gained fewer rematings with nonvirgins. We show novel and body size independent effects of adult male nutrition on traits influenced by Acps and sperm, which do not fit current condition-dependent handicap models and can affect the strength of sexual selection acting upon such fitness-related traits.