上海郊区大麝鼩生态学调查初报

来源 :中国媒介生物学及控制杂志 | 被引量 : 0次 | 上传用户:ltxiong
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本文报告1990年1~12月对上海郊区九县三种生境大麝鼩的生态学调查结果。观察到各县间大麝鼩捕获率差异颇大,最低为0.83%,最高为6.21%;三种生境以宅周捕获率最高,室内厨房次之,大田最低;全年有春、秋两个数量高峰,以秋峰(10月)为高;雌雄性比为1.36∶1;剖析525只雌体,怀孕率为33.71%。结果表明,12月份为繁殖休止期,3~4月怀孕率为54.22~58.33%,此后降至35~40%,8月出现第二个怀孕峰值,达60.61%,11月份迅速降到7.14%。分析495只体重与怀孕率的关系,发现随体重增加,怀孕率相应提高,二者呈正相关(r=0.9689)。剖析707只完整的大麝鼩胃内容物,发现主食谷物、昆虫和环节动物,少食绿色植物和种子;因月份不同,胃内容物出现频次有所差异。 This paper reports the results of the ecological investigation of three species of large musk deer in three habitats in nine suburbs of Shanghai from January to December in 1990. It was observed that there was a big difference in the catch rate of large musk deer among the counties, with the lowest being 0.83% and the highest being 6.21%. The three habitats had the highest rate of catching the house, followed by the kitchen in the interior and the lowest in the field. The peak was Qifeng (October), the ratio of male to female was 1.36:1, and the number of female was 525. The pregnancy rate was 33.71%. The results showed that December was the breeding period, the pregnancy rate from March to April was 54.22 ~ 58.33%, then dropped to 35 ~ 40%, the second pregnancy peak appeared in August, reaching 60.61%, and rapidly decreased to 7.14% in November. . Analysis 495 weight and pregnancy rate, and found that with weight gain, the corresponding increase in pregnancy rate, the two were positively correlated (r = 0.9689). Analysis of 707 intact large musk deer stomach contents found staple cereal grains, insects and annelids, eat less green plants and seeds; due to different months, the frequency of occurrence of gastric contents vary.
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