【摘 要】
：
现已发现苍溪有嗜群血蜱(Haemaphysalis concinna Koch,1844)、长角血蜱(Haemaphysalis longicomis)两种.为了解血蜱在苍溪县的分布、危害、季节活动规律及一些生物学特性.采用宿主体检蜱法、拖旗法、布旗覆盖法采集动物体表和野外环境的蜱,并进行形态鉴定和药物等防制试验.结果显示：1、在2005年,苍溪县发生嗜群血蜱暴发性疫情,流行面达97.4％,动物感
【机 构】
：
四川省苍溪县动物疫病预防控制中心,四川苍溪 628400
【出 处】
：
中国畜牧兽医学会兽医寄生虫学分会第十三次学术研讨会
论文部分内容阅读
现已发现苍溪有嗜群血蜱(Haemaphysalis concinna Koch,1844)、长角血蜱(Haemaphysalis longicomis)两种.为了解血蜱在苍溪县的分布、危害、季节活动规律及一些生物学特性.采用宿主体检蜱法、拖旗法、布旗覆盖法采集动物体表和野外环境的蜱,并进行形态鉴定和药物等防制试验.结果显示：1、在2005年,苍溪县发生嗜群血蜱暴发性疫情,流行面达97.4％,动物感染率7.7％-100％、在野外及农事活动的人群感染率53.8％；嗜群血蜱寄生宿主15种,以野生和放养的动物感染率最高,主要寄生部位为头面部、冠髯、颈部、胸腹部及腿内侧,主要危害是叮咬吸血,导致局部肿胀、骚瘁、发生感染,严重者引起贫血甚至死亡；2、2008年监测发现长角血蜱,并从长角血蜱体内检测出考克次氏体(Coxiella-like)(Noda et al.1997 GenBank：AB001519)、立克次氏体(Rickettsia-like)、杀雄菌(Arsenophonus-like)；3、血蜱的发生与流行和其宿主数量呈正相关.在2005年前,苍溪的野兔成灾,在野外也经常发现被蜱寄生致死的情况.之后暴发的嗜群血蜱疫情使野兔数量大幅度减少,血蜱密度也随之降低,在2010-2013年最低,几达到难以发现的程度.在2015年野兔和血蜱数量又有回升,接近2007年；4、通过疫情监测,摸清了血蜱在苍溪县的分布与对动物的危害、季节活动规律、群体生态形成的原因及一些生物学特性,依据上述结果提出了防控血蜱的建议.
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