A preliminary investigation of effects of grassland road on <i>Capillaria hepatica</i> infection rate in <i>Microtus gregalis</i>

Jin LIU, Shu-li HUANG, Hong-mei LI, Hasibaolidao, Ya TU, Xiao-min ZHANG, Chao LI, Wen-ji HUANG

doi:10.11853/j.issn.1003.8280.2023.01.020

Chinese Journal of Vector Biology and Control >

2023 , Vol. 34 >Issue 1: 109 - 113

DOI: https://doi.org/10.11853/j.issn.1003.8280.2023.01.020

Investigation

A preliminary investigation of effects of grassland road on Capillaria hepatica infection rate in Microtus gregalis

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1. Forest and Grass Bureau of Xilin Gol League, Xilinhot, Inner Mongolia 026000, China;
2. Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan 527000, China;
3. Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, Hainan 571101, China;
4. State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China;
5. College of Life Sciences, Sichuan University, Chengdu, Sichuan 610065, China

Received date: 2022-10-08

Online published: 2023-02-16

Supported by

Strategic Priority Research Program of Chinese Academy of Sciences(XDA20050103);National Natural Science Foundation of China(31770457)

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Abstract

Objective To study the effects of grassland roads on the density of Microtus gregalis and the rate and degree of Capillaria hepatica infection in M. gregalis. Methods From July to August 2006, in typical grassland (where M. gregalis was the dominant rodent species) in West Ujimqin Banner, Xilin Gol League, Inner Mongolia Autonomous Region, China, the relationship between grassland roads and the rate of C. hepatica infection in M. gregalis was investigated. The grassland was divided into experimental area (close to the grassland road) and control area (500 m away from the road). Each area was equally divided into six plots. Almost all narrow-skulled voles in plots were captured using rodent traps. The infection rate of C. hepatica was divided into four levels (0-3) from mild to severe. The infection rate was recorded and the independent sample t test was used to analyze data. Results The mean C. hepatica infection rate of M. gregalis was statistically higher in the experimental plots than in the control plots[(26.15±4.28)% vs (16.23±3.38)%, t=4.108, P=0.002]. The mean infection level of the infected voles was statistically higher in the experimental plots than in the control plots (1.55 vs 1.15, t=3.908, P=0.003). There was no statistical difference in the mean number of captured narrow-skulled voles between the experimental and control plots (23.17 vs 21.33, t=1.003, P=0.339). Conclusion Grassland roads have no statistical impact on the density of narrow-skulled voles, but narrow-skulled voles living close to grassland roads are more likely to have C. hepatica infection, which tend to be more severe, compared with those away from grassland roads. Grassland roads could promote the spread of C. hepatica, which should be paid attention to.

Key words： Grassland road; Microtus gregalis; Capillaria hepatica; Epidemiological investigation

Cite this article

Jin LIU, Shu-li HUANG, Hong-mei LI, Hasibaolidao, Ya TU, Xiao-min ZHANG, Chao LI, Wen-ji HUANG . A preliminary investigation of effects of grassland road on Capillaria hepatica infection rate in Microtus gregalis[J]. Chinese Journal of Vector Biology and Control, 2023 , 34(1) : 109 -113 . DOI: 10.11853/j.issn.1003.8280.2023.01.020

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