Social status and ejaculate composition in the house mouse.
Social status and ejaculate composition in the house mouse.
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DOI：
10.1098/rstb.2020.0083
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发表时间：
2020-12-07
期刊：
影响因子：
--
通讯作者：
Stockley P
中科院分区：
文献类型：
--
作者：
Bayram HL;Franco C;Brownridge P;Claydon AJ;Koch N;Hurst JL;Beynon RJ;Stockley P
精子竞争理论预测，男性应该根据自己的社会地位来定制射精。在这里，我们在一种模式脊椎动物--家鼠身上进行了测试，将实验数据与对精液成分的定量蛋白质组学分析相结合。我们的分析表明，精子产生和精囊分泌物中发现的蛋白质组成因社会地位而异。总体而言，占优势的雄性在射精方面投入了更多的资金。尽管两组人的睾丸大小相似，但他们的附睾包含的精子比从属或对照男性的更多。尽管体型相似，但优势雄鼠的精囊腺也比从属雄鼠或对照雄鼠大。然而，从属雄性精囊分泌物的蛋白质浓度显著高于显性雄性。此外，详细的蛋白质组学分析显示，根据社会地位的不同，精囊分泌蛋白质的组成存在细微但一致的差异，涉及多种在精子竞争中具有潜在功能意义的蛋白质。这些发现对理解精子竞争的动态和结果具有重要意义，并突显了社会地位作为影响精子和精液投资策略的一个因素的重要性。本文是主题期刊《精子竞赛五十年》的一部分。
Sperm competition theory predicts that males should tailor ejaculates according to their social status. Here, we test this in a model vertebrate, the house mouse (Mus musculus domesticus), combining experimental data with a quantitative proteomics analysis of seminal fluid composition. Our analyses reveal that both sperm production and the composition of proteins found in seminal vesicle secretions differ according to social status. Dominant males invested more in ejaculate production overall. Their epididymides contained more sperm than those of subordinate or control males, despite similar testes size between the groups. Dominant males also had larger seminal vesicle glands than subordinate or control males, despite similar body size. However, the seminal vesicle secretions of subordinate males had a significantly higher protein concentration than those of dominant males. Moreover, detailed proteomic analysis revealed subtle but consistent differences in the composition of secreted seminal vesicle proteins according to social status, involving multiple proteins of potential functional significance in sperm competition. These findings have significant implications for understanding the dynamics and outcome of sperm competition, and highlight the importance of social status as a factor influencing both sperm and seminal fluid investment strategies. This article is part of the theme issue ‘Fifty years of sperm competition’.
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发表时间：
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影响因子：
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发表时间：
1995-12-29
影响因子：
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