浙江省义乌市2020年山羊寄生蜱监测结果分析

An analysis of the monitoring results of ticks in goats in Yiwu,Zhejiang province,China,2020

目的初步掌握浙江省义乌市山羊寄生蜱情况,为蜱及蜱传疾病防控提供依据。方法选择义乌市一群放养山羊,于2020年3-11月,每月下旬对放养山羊体表寄生蜱,采用体表检蜱法进行监测,对收集的蜱鉴定种类并记录数量,分析山羊体表蜱寄生情况。结果2020年3-11月共监测放养山羊90只,蜱类阳性山羊68只,阳性率为75.56%;捕获蜱311只,蜱指数为3.46;共监测到4种蜱,优势蜱种为镰形扇头蜱,占总数的45.02%(140只),其次为长角血蜱94只,占总数的30.23%。蜱指数3-5月及10月较高,全年幼、若、成蜱均有捕获。同时感染3种蜱的山羊5只,占总数的5.56%;同时感染2种蜱的山羊14只,占总数的15.56%。结论义乌市山羊寄生蜱阳性率较高,全年均有蜱类活动,3-5月和10月是寄生蜱活动的高峰,应引起足够的重视。

Objective To investigate the infestation of parasitic ticks in goats in Yiwu,Zhejiang province,China,and to provide a basis for the prevention and control of ticks and tick-borne diseases.Methods A herd of free range goat in Yiwu was selected,and the parasitic ticks on the body surface of goats were monitored in the last ten days of each month from March to November 2020.The species of collected ticks were identified and the number was recorded;the parasitism of ticks in goats was analyzed.Results A total of 90 grazing goats were monitored from March to November2020,among which 68(75.56%)were positive for ticks.A total of 311 ticks were captured,with a tick index of 3.46;There were 4 species of ticks,the dominant tick species was Rhipicephalus haemaphysaloides,accounting for 45.02%(n=140)of the total,followed by Haemaphysalis longicornis,accounting for 30.23%(n=94).Tick index was relatively high from March to May and in October.Larval,nymphal,and adult ticks were caught all year round.Five goats(5.56%)were concurrently infected with 3 species of ticks,and 14 goats(15.56%)were concurrently infected with 2 species of ticks.Conclusion The positive rate of ticks in goats is relatively high in Yiwu.Ticks are active all year round,with the peaks in March-May and October.Enough attention should be paid to this.