How and to what extent do sneakers gain proximity to females in an externally fertilizing fish?
How and to what extent do sneakers gain proximity to females in an externally fertilizing fish?
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在体外受精的鱼中，运动鞋如何以及在多大程度上接近雌性？
DOI：
10.1016/j.anbehav.2015.07.029
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发表时间：
2015
期刊：
影响因子：
2.5
通讯作者：
Kohda M
中科院分区：
文献类型：
--
作者：
Ota K;Kohda M
最近的研究表明，在外部受精系统的受精成功的影响，在射精时的竞争男性的时间和空间位置的差异，是内部受精系统的情况下。关于这些位置在竞争对手之间有何不同，我们知之甚少。我们解决了这个问题，在三鳍鱼Enneapartum usetheostoma，产卵在湍流环境中，并采用外部受精和替代生殖策略（即运动鞋和领土男性）。对野外记录的潜行行为的视频图像进行逐帧分析发现，运动鞋比领土男性更晚射精，并且远离产卵的女性。大多数的潜行尝试都失败了，因为领土男性的攻击。成功的运动鞋大多躲在产卵场周围的避难所后面，然后冲进产卵场（即未被发现），或者在接近产卵场时被发现并受到攻击，或者躲在产卵场附近，但无论如何还是冲了进去（攻击发起的潜行）。在未被发现的成功运动鞋中，少数人在产卵的女性被攻击其他运动鞋的领土男性忽视时冲进去（诱导潜行），其他人在没有领土攻击时冲进去（无攻击潜行）。无攻击的潜行是通过运动鞋进行的，运动鞋隐藏得更靠近产卵的雌性更长时间，并且在射精时在空间和时间上更靠近领地雄性。总而言之，我们得出结论，过去的领土警戒和观察配子释放产卵对在一个隐藏的地方的能力是关键因素，帮助运动鞋，以改善他们的位置在射精，因此，也许他们的受精成功。
Recent studies have shown that fertilization success in external fertilization systems is influenced by differences in the temporal and spatial positions of competing males at ejaculation, as is the case for internal fertilization systems. Little is known about how these positions differ between competitors. We tackled this issue in the triplefin fishEnneapterygiusetheostoma, which spawns in turbulent flow environments, and which employs external fertilization and alternative reproductive tactics (i.e. sneakers and territorial males). A frame-by-frame analysis of video images of sneaking behaviours recorded in the wild revealed that sneakers ejaculated later, and further from the spawning female, than territorial males. The majority of sneaking attempts failed because of attacks by territorial males. Successful sneakers mostly hid behind shelters around the spawning sites and then rushed into the site (i.e. were undetected), or were detected and attacked as they approached the site or hid near it, but rushed in anyway (attack-initiated sneaking). Of the undetected successful sneakers, a minority rushed in when the spawning female was being ignored by a territorial male that was attacking other sneakers (induced sneaking) and the others rushed in when there was no territorial attack (attack-free sneaking). Attack-free sneaking was carried out by sneakers that hid closer to the spawning female for longer, and were spatially and temporally closer to territorial males at ejaculation. Altogether, we conclude that the abilities to get past territorial vigilance and observe gamete release of spawning pairs at a hiding place are key factors that helped sneakers to improve their position at ejaculation, and thus perhaps their fertilization success.
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影响因子：
3.3
作者：
Ioannou, Christos C.;Krause, Jens
通讯作者：
Krause, Jens
DOI：
10.1098/rspb.2000.1577
发表时间：
2001-04-07
影响因子：
4.7
作者：
Evans, JP;Magurran, AE
通讯作者：
Magurran, AE
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影响因子：
2.3
作者：
Davnah Urbach;I. Folstad;G. Rudolfsen
通讯作者：
G. Rudolfsen
体外受精鱼的产卵前射精：运动鞋雄性玫瑰苦鱼如何设法交配
影响因子：
1.7
作者：
Y. Kanoh
通讯作者：
Y. Kanoh
在大西洋鲑鱼的体外精子竞争实验中，两秒的延迟赋予了第一只雄性受精的优先权
DOI：
--
发表时间：
2007
期刊：
影响因子：
--
作者：
S. Yeates;J. Searle;R. G. Ward;M. Gage
通讯作者：
M. Gage