干旱区生态环境知识资源中心(Arid): 鄂尔多斯沙地草场小毛足鼠8年繁殖生态的研究

Arid

	鄂尔多斯沙地草场小毛足鼠8年繁殖生态的研究
其他题名	Study on breeding ecology of Phodopus roborovskii in Ordos sand-land grassland for 8 years
	董维惠; 侯希贤; 杨玉平
ISSN	1003-4692
出版年	2009
卷号	20 期号:5 页码:407-412
中文摘要	目的研究小毛足鼠繁殖生态.方法 1991-1998年每年的4-10月中旬在鄂尔多斯沙地草场的不同生境内,利用直线夹日法调查,捕获鼠全部称重、测量后解剖,记录繁殖情况.结果 1991-1998年在该地共捕鼠10种,小毛足鼠是优势种之一,占捕获鼠的30.93%.共捕获小毛足鼠2562只,其中雌性1258只,雌性比为(49.101.94)%,性比年度和季节变化不明显.雄鼠年平均睾丸下降率为(70.552.47)%,睾丸下降2月开始10月结束.雌性年平均怀孕率和胎盘斑率分别为(26.392.43)%和(21.382.27)%,平均胚仔数和胎盘斑数分别为(6.230.18)个和(5.380.49)个,年平均繁殖2次的占雌鼠的(4.131.10)%.平均繁殖指数为1.0620.162,雌性繁殖3月开始11月结束.睾丸下降率、雌性怀孕率和繁殖指数的年际与季节变化明显.结论小毛足鼠性比、雄性睾丸下降率、雌性怀孕率及胎仔数等年度间和季节均有差异.
英文摘要	Objective Study the breeding ecology of desert hamster(Phodopus roborovskii). Methods The population dynamics of P.roborovskii was investigated at different habitats in Ordos sand-land grassland in the middle ten days from April to October during 1991 to 1998 by rectilinear-trapping method. The trapped rodents were weighed, surveyed and dissected, and the breeding condition was recorded. Results Ten kinds of rodents were captured from 1991 to 1998. The desert hamster was one of dominant species, which accounted for 30.93% of all captured rodents. A total of 2562 desert hamsters were captured, including 1258 females with the proportion of (49.101.94)%. There was no significant difference in sex ratios with the change of seasons and years. The average decreasing rate of testicle in male was (70.552.47)%, and it began to decrease in February, ending in October. Average pregnant rate and placenta rate were (26.392.43)% and (21.382.27)%, respectively. The average number of fetal rats and placenta were (6.230.18) and (5.380.49), respectively. The females that produced two times each year accounted for (4.131.10)%. Average reproduction index was 1.0620.162. The reproduction period of females was from March to November. The decreasing rate of testicle in scrotum, pregnant rate and reproduction index had obvious changes with seasons and years. Conclusion There was significant difference among sex ratio, declining rate of testicle in scrotum, pregnant rate and fetal rats quantity of P.roborovskii with seasons and years.
中文关键词	小毛足鼠 ; 性比 ; 睾丸下降率 ; 怀孕率 ; 繁殖指数
英文关键词	Phodopus roborovskii Sex ratio Rate of testicle in scrotum Pregnant rate Reproduction index
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3720651
来源机构	中国农业科学院草原研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224507
作者单位	中国农业科学院草原研究所, 呼和浩特, 内蒙古 010010, 中国
推荐引用方式 GB/T 7714	董维惠,侯希贤,杨玉平. 鄂尔多斯沙地草场小毛足鼠8年繁殖生态的研究[J]. 中国农业科学院草原研究所,2009,20(5):407-412.
APA	董维惠,侯希贤,&杨玉平.(2009).鄂尔多斯沙地草场小毛足鼠8年繁殖生态的研究.,20(5),407-412.
MLA	董维惠,et al."鄂尔多斯沙地草场小毛足鼠8年繁殖生态的研究".20.5(2009):407-412.