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首页> 外文期刊>Zoological Science >Annual Reproductive Patterns of Female House Shrew, Suncus murinus, in Taiwan
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Annual Reproductive Patterns of Female House Shrew, Suncus murinus, in Taiwan

机译：台湾Sun鼠雌性Sh的年繁殖方式

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摘要

Reproductive patterns of female house shrew (Suncus murinus) inhabiting central Taiwan were studied from September 1990 to February 1992 with animals collected monthly. The annual average body weight was 37.4 g for adults (N=198), and 23.2 g for juveniles (N=18), respectively. The reproductive females (pregnant and lactating) were found all the year round with higher percentages (more that 80%) in spring-summer. The average litter size was 2.9 (range: 1-6). The levels of plasma estradiol-17 #beta# in adult females were higher in March-June (140 pg/ml), and decreased gradually to 98 pg/ml in January-February. Plasma levels of estradiol-17 #beta# in pregnant and lactating females were significantly greater than those of non-pregnant adults and of juveniles. Ovarian weights, plasma levels of estradiol-17 #beta#, and pregnancy rate were correlated with day length. The pre-implantation mortality and post-implantation mortality of the embryos were 6.9% and 1.6%, respectively. The present study has demonstrated that the female S. murinus inhabiting central Taiwan breeds all year round with higher reproductive activity in spring and summer.
机译：1990年9月至1992年2月，研究了居住在台湾中部的雌性家sh（Suncus murinus）的繁殖方式，每月收集动物。成人的年平均体重分别为37.4克（N = 198）和青少年的23.2 g（N = 18）。一年四季都发现雌性生殖动物（怀孕和哺乳期），春季和夏季的百分比更高（超过80％）。平均垫料尺寸为2.9（范围：1-6）。成年女性的血浆雌二醇-17＃beta＃水平在3月至6月较高（140 pg / ml），在1月至2月逐渐降低至98 pg / ml。孕妇和哺乳期女性的血浆雌二醇-17＃beta＃水平显着高于未怀孕成年人和青少年。卵巢重量，血浆雌二醇17＃beta＃水平和妊娠率与日长相关。胚胎的植入前死亡率和植入后死亡率分别为6.9％和1.6％。本研究表明，居住在台湾中部的雌性S. murinus常年繁殖，春季和夏季繁殖活动较高。

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