Predictors for presence and abundance of small mammals in households of villages endemic for commensal rodent plague in Yunnan Province, China

Annals of Occupational and Environmental Medicine

Jia-Xiang Yin²  Alan Geater¹  Virasakdi Chongsuvivatwong¹  Xing-Qi Dong²  Chun-Hong Du²  You-Hong Zhong²  Edward McNeil¹ 

[1] Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand

[2] Yunnan Institute of Endemic Disease Control and Prevention, 5 Wenhua Road, Dali City, Yunnan Province, 671000, PR China

Others  :  1087040
DOI  :  10.1186/1472-6785-8-18

 received in 2008-09-29, accepted in 2008-12-10,  发布年份 2008

【 摘 要 】

Background

Ninety-one rodent plague epidemics have occurred in Lianghe county, Yunnan Province, China, between 1990 and 2006. This study aimed to identify predictors for the presence and abundance of small mammals in households of villages endemic for rodent plague in Lianghe county.

Results

Rattus flavipectus and Suncus murinus were the two species captured in 110 households. Keeping cats decreased the number of captures of R. flavipectus by one to two thirds and the chance of reported small mammal sightings in houses by 60 to 80%. Food availability was associated with fewer captures. Keeping food in sacks decreased the small mammal captures, especially of S. murinus 4- to 8-fold. Vegetables grown around house and maize grown in the village reduced the captures of S. murinus and R. flavipectus by 73 and 45%, respectively. An outside toilet and garbage piles near the house each reduced R. flavipectus captures by 39 and 37%, respectively, while raising dogs and the presence of communal latrines in the village increased R. flavipectus captures by 76 and 110% but were without detectable effect on small mammal sightings. Location adjacent to other houses increased captures 2-fold but reduced the chance of sightings to about half. In addition, raising ducks increased the chance of sighting small mammals 2.7-fold. Even after adjusting for these variables, households of the Dai had higher captures than those of the Han and other ethnic groups.

Conclusion

Both species captures were reduced by availability of species-specific foods in the environment, whereas other predictors for capture of the two species differed. Other than the beneficial effect of cats, there were also discrepancies between the effects on small mammal captures and those on sightings. These differences should be considered during the implementation and interpretation of small mammal surveys.

【 授权许可】

   
2008 Yin et al; licensee BioMed Central Ltd.

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