Sperm morphology, adenosine triphosphate (ATP) concentration and swimming velocity: unexpected relationships in a passerine bird.
Sperm morphology, adenosine triphosphate (ATP) concentration and swimming velocity: unexpected relationships in a passerine bird.
复制标题
DOI：
10.1098/rspb.2016.1558
复制
发表时间：
2016-08-31
期刊：
影响因子：
--
通讯作者：
Birkhead T
中科院分区：
文献类型：
--
作者：
Bennison C;Hemmings N;Brookes L;Slate J;Birkhead T
精子能量学和精子功能之间的关系知之甚少，但对我们理解精子性状的进化至关重要。本研究旨在探讨斑胸草雀精子形态及ATP含量对精子游动速度的影响。我们利用了这个物种中雄性间的高度变异，并通过人工选择增加具有很长或很短精子的个体数量来创造额外的实验能力。我们发现精子总长度和游泳速度之间存在明显的二次关系，随着长度的增加，速度增加到一定程度，但在最长的精子中速度下降。我们还发现中段长度和ATP含量之间存在意想不到的负相关：中段短的精子通常含有最高浓度的ATP。因此，低细胞内ATP不太可能解释最长精子（往往具有较短的中段）游泳速度的降低。
The relationship between sperm energetics and sperm function is poorly known, but is central to our understanding of the evolution of sperm traits. The aim of this study was to examine how sperm morphology and ATP content affect sperm swimming velocity in the zebra finch Taeniopygia guttata. We exploited the high inter-male variation in this species and created extra experimental power by increasing the number of individuals with very long or short sperm through artificial selection. We found a pronounced quadratic relationship between total sperm length and swimming velocity, with velocity increasing with length up to a point, but declining in the very longest sperm. We also found an unexpected negative association between midpiece length and ATP content: sperm with a short midpiece generally contained the highest concentration of ATP. Low intracellular ATP is therefore unlikely to explain reduced swimming velocity among the very longest sperm (which tend to have a shorter midpiece).
登录
查看更多内容
影响因子：
2
作者：
Gage, MJG;MacFarlane, C;Parker, GA
通讯作者：
Parker, GA
影响因子：
4.4
作者：
BAKST, MR
通讯作者：
BAKST, MR
影响因子：
2
作者：
BIRKHEAD, TR;MOLLER, AP;SUTHERLAND, WJ
通讯作者：
SUTHERLAND, WJ
后性性选择与精子形态变化的降低有关。
影响因子：
3.7
作者：
Calhim, Sara;Immler, Simone;Birkhead, Tim R.
通讯作者：
Birkhead, Tim R.
影响因子：
3.3
作者：
Malo, Aurelio F.;Gomendio, Montserrat;Roldan, Eduardo R. S.
通讯作者：
Roldan, Eduardo R. S.