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公鸡喜新厌旧的生化证据
[版面:发考题][首篇作者:Junzizhishou] , 2019年04月14日11:09:32 ,653次阅读,0次回复
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Junzizhishou
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发信人: Junzizhishou (君子之守), 信区: Faculty
标  题: 公鸡喜新厌旧的生化证据
发信站: BBS 未名空间站 (Sun Apr 14 11:09:32 2019, 美东)

https://www.nature.com/articles/s41598-019-41336-5
摘要在这里, social status 这一段不大懂,请明白人解释一下
模型中用的是野公鸡,不是人类
Theory predicts that males will strategically invest in ejaculates according
to the value of mating opportunities. While strategic sperm allocation has
been studied extensively, little is known about concomitant changes in
seminal fluid (SF) and its molecular composition, despite increasing
evidence that SF proteins (SFPs) are fundamental in fertility and sperm
competition. Here, we show that in male red junglefowl, Gallus gallus, along
with changes in sperm numbers and SF investment, SF composition changed
dynamically over successive matings with a first female, immediately
followed by mating with a second, sexually novel female. The SF proteome
exhibited a pattern of both protein depletion and enrichment over successive
matings, including progressive increases in immunity and plasma proteins.
Ejaculates allocated to the second female had distinct proteomic profiles,
where depletion of many SFPs was compensated by increased investment in
others. This response was partly modulated by male social status: when
mating with the second, novel female, subdominants (but not dominants)
preferentially invested in SFPs associated with sperm composition, which may
reflect status-specific differences in mating rates, sperm maturation and
sperm competition. Global proteomic SF analysis thus reveals that successive
matings trigger rapid, dynamic SFP changes driven by a combination of
depletion and strategic allocation.


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※ 修改:·Junzizhishou 於 Apr 14 11:17:28 2019 修改本文·[FROM: 73.]
※ 来源:·WWW 未名空间站 网址:mitbbs.com 移动:在应用商店搜索未名空间·[FROM: 73.]

 
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