交配会使大鼠附睾中的精子数量急剧增加。

Copulation induces an acute increase in epididymal sperm numbers in rats.

作者信息

Taylor G T, Weiss J, Frechmann T, Haller J

出版信息

J Reprod Fertil. 1985 Mar;73(2):323-7. doi: 10.1530/jrf.0.0730323.

DOI:10.1530/jrf.0.0730323

Abstract

The temporal changes in epididymal sperm numbers during the month after sexual contact were examined in 80 adult albino rats. The comparably sexually experienced males in 6 experimental groups were allowed 3 ejaculations with ovariectomized females in which oestrus was induced by hormone injections. Epididymides were removed from the experimental males 1 h, 1 day, 2 days, 3 days, 7 days or 30 days later. Control males were sexually inexperienced or sexually experienced and living with females. Epididymal sperm counts revealed a pattern that resembled an inverted V-shaped function with a peak at 48 h after copulation. We suggest that sexual activity provokes an acute attenuation of sperm disposal within the epididymis with the result that more spermatozoa are available for ejaculation during sexually active times.

摘要

在80只成年白化大鼠中研究了性接触后一个月内附睾精子数量的时间变化。6个实验组中具有相当性经验的雄性大鼠与经激素注射诱导发情的去卵巢雌性大鼠进行3次射精。分别在1小时、1天、2天、3天、7天或30天后从实验雄性大鼠身上取出附睾。对照雄性大鼠没有性经验或有性经验且与雌性大鼠生活在一起。附睾精子计数显示出一种类似于倒V形的模式，在交配后48小时达到峰值。我们认为，性活动会引发附睾内精子排出的急性减弱，结果是在性活跃期有更多的精子可用于射精。