Abstract:This study aims to accurately grasp the characteristics of Sanjiangyuan Myospalax baiLeyi density, male and female ratio, body weight, body length, coat color and reproductive performance. From 2020 to 2021, we focused on field monitoring, hole capture, and anatomical observation in the Sanjiangyuan area. The results show that Myospalax baiLeyis are active all year round. The activities are manifested in different activity periods such as mating, breastfeeding, living apart to store grain, and overwintering in the nest. There are two activity peaks: April to June in spring is the breeding season, August to October in autumn is the grain storage period, and it is limited to living in the nest from November to March. The number of male mice accounted for 40.6% of the female mice. The average weight of male mice was 1715.42 g, and the body length was 313.7 mm; the average weight of female mice was 2 205.75 g, and the body length was 206.3 mm. Male mice accounted for 77.77% of the body weight of female mice. Female rats give birth to an average of 4 litters, up to 7 litters. Each zokor digs an average of about 1 ton of soil a year, and the number of mounds pushed out to the ground is 252.1 hm2. The dry weight of the soil pushed to the ground alone reaches 1043.8 kg, and the grassland area covered is 22.5 hm2. The daily food intake of each zokor is 90-120 g, and each zokor can eat 21 kg of fresh grass for 7 months a year, with high reproduction rate and strong destructive power.
