摘要: 白化黑腹绒鼠一例卢苗贵姚兆华王德岳张东其（浙江省卫生防疫站杭州３１０００９）关键词黑腹绒鼠白化在浙江省天台县肾综合征出血热疫源地调查中，于１９９５年９月２０日自新中镇溪头王村（距村４００ｍ，距山５００ｍ处）水稻田捕获一只白化的黑腹绒鼠（Ｅｏｔ...

摘要: 本文对８例长爪沙鼠（Ｍｅｒｉｏｎｅｓｕｎｇｕｉｃｕｌａｔｕｓ）幼年、亚成年、成年和老年雄性个体的阴茎头组织进行连续切片。结果表明，阴茎头的外环层和阴茎骨近支由阴茎海绵体衍生而来；内环层、尿道小瓣、阴茎骨远支和侧支由尿道海绵体衍生而成。采用扫描电镜观察了长爪沙鼠、子午沙鼠（Ｍ．ｍｅｒｉｄｉａｎｕｓ）、大沙鼠（Ｒｈｏｍｂｏｍｙｓｏｐｉｍｕｓ）和甘肃绒鼠（Ｅｏｔｈｅｎｏｍｙｓｅｖａ）、黑腹绒鼠（Ｅ．ｍｅｌａｎｏｇａｓｔｅｒ）共５种１６例的阴茎头表皮棘，发现其形态、数量和分布有属、种间差异性和相对稳定性，沙鼠属（Ｍｅｒｉｏｎｅｓ）３种的表皮棘均呈牛角状的圆锥体，斜向排列成行；而绒鼠属（Ｅｏｔｈｅｎｏｍｙｓ）内甘肃绒鼠为球状表皮棘，黑腹绒鼠为牛角状，排列均不规则。因此，阴茎头表皮棘与阴茎骨、阴茎头软体结构均有分类学意义。

摘要: 为探讨东洋界华中区黑腹绒鼠的代谢产热特征及体温调节,本文采用封闭式流体压力呼吸仪对其代谢率、热传导和体温等热生物学指标进行了测定。结果显示:在环境温度为5~25℃的范围内,黑腹绒鼠的体温基本维持恒定,平均体温为36.5±0.1℃;热中性区为25~30℃;基础代谢率为2.99±0.09mlO2/(g.h);环境温度(Ta)在5~25℃范围内,代谢率(MR)与Ta呈负相关,回归方程为:MR[mlO2/(g.h)]=6.56-0.16Ta(℃),在此范围内,黑腹绒鼠的热传导率C最低,平均为0.26±0.01mlO2/(g.h.℃)。黑腹绒鼠的基本热生物学特征为:较高的BMR、热传导率和体温以及较宽的热中性区。

摘要: From 2003 to 2004,the seasonal changes in digestive tract morphology in Eothenomys melanogaster from Yiwu,Zhejiang Province were determined.Significant seasonal variations were found in length,wet and dry weight of total gut.The results showed:winter>spring>summer>autumn in length;spring>winter>autumn>summer in wet weight;and winter>spring>autumn>summer in dry weight.For the separate organs of the total gut,stomach did not change seasonally except for length which was the longest in winter.The wet and dry weights of small intestine showed significant changes among different seasons.The results were:spring>autumn>winter>summer in wet weight;and winter>spring>autumn>summer in dry weight.No significant seasonal variation was found in length for small intestine.The wet weight of caecum showed significant seasonal changes and increased significantly in winter and spring.No significant seasonal variations were found in dry weight and length for caecum.Seasonal acclimatization caused large intestine to change dramatically,being larger in spring and winter than in the other two seasons.Our results showed that different organs showed different responses and changed by different magnitudes,to the seasonal acclimatization.This suggests that the adjustments in capacity and size of the gastrointestinal tract play an important role in their digestive strategies of Eothenomys melanogaster in the natural environment.

摘要: 用雄性阴茎骨近支基底高作频数分配将黑腹绒鼠指名亚种划分为５个年龄组，对各年龄组的体长、阴茎骨近支长和阴茎骨近支基底宽作ｔ检验和Ｆ检验均有显著差异或极显著差异。表明以阴茎骨近支基底高划分黑腹绒鼠年龄组是可行的。