关键词: 农田害鼠, 分布, 发生

Abstract:

Objective To identify local rodent species and distribution in farmland of Yunnan province. Methods We studied monitoring data from 15 stations during 1994 to 2009 in order to determine the annual density change of mixed population in field. Student's t test was used to analyze changes in density and monthly changes are presented with diagrams. Results The distribution of rodent infestation could be divided into six areas by agriculture industry type. Although the rodent density did not change significantly during a years time, a bimodal pattern of the monthly change in the species and number was noted with two peaks during April to June and September to November. Six species were identified as the major causes of infestation, accounting for 88.32% of the total captured rodents. Conclusion Further research using national monitoring data from sentinel stations in Yunnan province is needed. Species diversity, activity distribution and infestation of out-of-field rodents and their relationship with in-field population are areas of concern.

Key words: Field rodent, Distribution, Outbreak