Effects of different grazing intensity on population density, body weight, blood glucose and blood lipid of Spermophilus dauricus

LIU Zhenshan; ZHAO Geng; PAN Jiaying; PENG Xia; YANG Ming

doi:10.16829/j.slxb.150828

2024 , Vol. 44 >Issue 3: 360 - 369

DOI: https://doi.org/10.16829/j.slxb.150828

ORIGINAL PAPERS

Effects of different grazing intensity on population density, body weight, blood glucose and blood lipid of Spermophilus dauricus

LIU Zhenshan ,
ZHAO Geng ,
PAN Jiaying ,
PENG Xia ,
YANG Ming

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1 College of Life Sciences, Shenyang Normal University, Shenyang 110034, China;
2 Experimental Teaching Center, Shenyang Normal University, Shenyang 110034, China

Received date: 2023-07-11

Revised date: 2024-01-02

Online published: 2024-05-31

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Abstract

Overgrazing has led to grassland degradation, creating a suitable living environment for some rodents, and exacerbating grassland degradation and rodent infestation. Daurian ground squirrel (Spermophilus dauricus) is a grounddwelling Sciuridae and is a typical seasonal hibernator mainly distributed in the grassland and the agricultural-pastoral zone in northern China. To analyze the effects of grazing and vegetation cover on the population density, body weight, blood glucose and blood balance of Daruian ground squirrels, we selected field plots with different distances between villages (near village and far from village) at Heishitou town, Erguna, Hulunbuir Grassland. The field plots near village showed high grazing intensity, while the field plots far from village showed low grazing intensity. Our results showed that the burrow density and capture rate of the ground squirrels in high grazing intensity plots were significantly higher than those in low grazing intensity plots. The body weight and blood triglyceride concentration of the ground squirrels in the high grazing intensity plots were significantly higher than those in the low grazing intensity plot, while the serum glucose of ground squirrels in the low grazing intensity plots was significantly higher than that in the high grazing intensity plots. The total dry matter of vegetation in high grazing intensity plots was significantly higher than that in low grazing intensity plots, and the total dry matter and quantity of Leymus chinensis in high grazing intensity plots were significantly higher than those in low grazing intensity plots, and there were also differences on vegetation types. The above results indicate that grazing may change the type and quantity of vegetation in the grassland ecosystem through livestock trampling, feeding, and excrement, which provides more abundant and high-quality food resources for Daurian ground squirrels, promotes the accumulation of fat, and is conducive to the survival and reproduction of this species. These results are helpful in understanding the environmental adaptation of Daurian ground squirrels and provide a theoretical basis for the establishment of an environmentally friendly integrated management system for rodent pests, which has significance for the protection of biodiversity and the maintenance of ecological balance.

Key words： Grazing intensity; Spermophilus dauricus; Population density; Triglycerides; Blood glucose

Cite this article

LIU Zhenshan , ZHAO Geng , PAN Jiaying , PENG Xia , YANG Ming . Effects of different grazing intensity on population density, body weight, blood glucose and blood lipid of Spermophilus dauricus[J]. ACTA THERIOLOGICA SINICA, 2024 , 44(3) : 360 -369 . DOI: 10.16829/j.slxb.150828

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