关键词: 黑腹绒鼠, 食性, 繁殖, 生态学

Abstract: The authors did a field research on the eating habits and breeding ecology of Eothenomys Melanogaster in the bush and grass marshlaud in Yezhudang, Mount Tianmu (with an elavation of 1480m.) during 1989～1990. A total number of 436 specimens were taken (male 233, female 213) and dissected the stomaches for inspection of gastric residue and also food around and inside the cavities were analyzed. A list of 27 plants were identified to be mainly composed of roots, stems and leves of plants. well-developed caecum of the specimen was observed due to the Iow-calorle yet rich fibred food intake. The authors divided the specimen into 5 age groups following the body weight(without viscera) and the sexual maturity, studying the relation between male breeding capability and the size of the testis and found that mature sperms are only produced when the testie reach a length of 5～6mm. Also the monthly breeding capability were analyzed. Newly breeded specimens are generally kept out of the breeding activity till the year next. A specimen which takes first part in breeding activities in the spring is often breeded in the last winter. The population is renewed every year. Of the 40 specimens dissected, an average of 2.08 litters was observed per pregnant specimen and 14 ones were found to have foetal marks with an average of 2.21 marks per littera very similar rate to that of litters per pregnant specimen.