期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
三种啮齿动物的消化道形态特征 被引量:22
1
作者 柳劲松 孙儒泳 王德华 《动物学杂志》 CAS CSCD 北大核心 2007年第1期8-13,共6页
对棕背(Clethrionomys rufocanus)、林姬鼠(Apodemus speciosus)和黑线姬鼠(A.agrarius)夏季的消化道形态进行了比较。3种啮齿动物总消化道的长度及重量(含内容物重和总干组织重),各器官的长度,胃、小肠和盲肠等长度,小肠和盲肠含内... 对棕背(Clethrionomys rufocanus)、林姬鼠(Apodemus speciosus)和黑线姬鼠(A.agrarius)夏季的消化道形态进行了比较。3种啮齿动物总消化道的长度及重量(含内容物重和总干组织重),各器官的长度,胃、小肠和盲肠等长度,小肠和盲肠含内容物重,盲肠和大肠去内容物重,小肠、盲肠和大肠总干组织重等均存在明显的种间差异。以植物为食的棕背的总消化道、小肠、盲肠和大肠的长度或重量明显长于或重于其他两种鼠类。后肠可作为衡量草食性动物食物质量的指标。3种啮齿动物可通过消化道形态改变以适应不同的食性。 展开更多
关键词 棕背孵 林姬鼠 黑线姬鼠 消化道形态
下载PDF
东灵山辽东栎林啮齿动物群落组成及优势种大林姬鼠的繁殖特征 被引量:10
2
作者 马杰 李庆芬 +1 位作者 孙儒泳 刘定震 《动物学报》 SCIE CAS CSCD 北大核心 2003年第2期262-265,共4页
The composition of the rodent community and the reproductive characte ristics of the large field mouse Apodemus peninsulae were studied in the Quercus liaotungensis forest of the Dongling Mountains from May to Octo be... The composition of the rodent community and the reproductive characte ristics of the large field mouse Apodemus peninsulae were studied in the Quercus liaotungensis forest of the Dongling Mountains from May to Octo ber 2000. 1 297 traps were set and 107 rodents were captured. The capture ra te was 0 0 82. The rodent community in this area was comprised of 5 species:89 Apodemu s peninsulae, 11 Rattus niviventer, 5 Apodemus agrarius, 1 Clethrionomys ru focanus and Eutamias sibiricus respectively. The community belongs to the warm forest forest grassland farm animal group. Apodemus peninsulae was the dominant specie s and breeds from April to October. The female may reproduce 1-3 times per yea r. The sex ratio (F M) of Apodemus peninsulae was 0 935. Adult group Ⅱ fe males ha d the highest pregnancy rate (76 92%) with the senile group second (70%). The t o tal index of reproduction was 3 36, and the mean litter size was 5 88±1 03. Th e senile group had both the highest index of reproduction (4 50) and mean litte r size (6 43±0 98) among all age groups. The average testicular weight was 1 0 6±0 45 g. Some significant differences were found in testicular weight, leng t h and width between the two adult groups ( P <0 05). Our results indicate tha t Apodemus peninsulae has a high reproductive ability, and might have a sig nificant impact on the regeneration of Quercus liaotungensis . 展开更多
关键词 东灵山地区 辽东栎林 啮齿动物 群落组成 优势种 大林姬鼠 繁殖特性
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部