云南省微红纤恙螨分布规律的进一步研究

发布时间：2018-01-17 12:39

本文关键词：云南省微红纤恙螨分布规律的进一步研究　出处：《中国病原生物学杂志》2017年10期 　论文类型：期刊论文

【摘要】：目的以往研究的基础上进一步探讨云南省微红纤恙螨的分布规律。方法根据2001-2015年对云南省34个调查地点的现场调查资料,统计和比较微红纤恙螨在不同地域、地理景观、生境和宿主体表的分布比例及感染状况(包括感染率、平均多度和感染度),比较该螨在不同性别宿主感染的差异性。用协调系数测定微红纤恙螨与地里纤恙螨的种间关系,用聚块指数(m*/m)测定微红纤恙螨在宿主动物不同个体间的空间分布。结果共调查的34个点,仅8个调查点采集到微红纤恙螨706只,占全部恙螨的0.55%(705/127460),89.08%的微红纤恙螨采自位于云南省南部的西双版纳地区,特别是位于江河沿岸的低纬度、低海拔、气候炎热和潮湿的河谷坝区。705只微红纤恙螨宿主分布为3目5科7属8种,宿主特异性较低,主要宿主为黄胸鼠等。该螨在宿主的不同个体间分布不均匀,呈聚集性。该螨与其近缘种地里纤恙螨之间存在一定的正协调关系(V=0.57,P0.01)。结论云南省有微红纤恙螨的分布,但不是主要螨种。该恙螨主要分布在炎热、潮湿的低纬度、低海拔河谷坝区室外生境。其宿主特异性低,主要倾向于寄生在黄胸鼠等宿主,且呈聚集性。
[Abstract]:Objective to further explore the distribution of chigger mites in Yunnan Province on the basis of previous studies. Methods based on the field investigation data of 34 investigation sites in Yunnan Province from 2001 to 2015. The distribution and infection status of chigger mites in different regions, geographical landscape, habitat and host surface (including infection rate, average abundance and infection degree) were analyzed and compared. To compare the difference of the infection of the mites in different sex hosts, and to determine the interspecific relationship between the mites of red fir chigger mites and that of chigger mites by using the coordination coefficient. The spatial distribution of chigger mites in different individuals of host animals was determined by means of mass index / mics. Results 706 chigger mites were collected from only 8 of the 34 sites investigated. 0.55% of all chigger mites were collected from Xishuangbanna area in the south of Yunnan Province, especially in the low latitude along the river bank. In the valley dam area of low altitude, hot and humid climate. 705 mites were distributed in 3 orders, 5 families, 7 genera and 8 species, and the host specificity was relatively low. The main host was Rattus flavipectus et al. The mites distributed unevenly among the host individuals and showed aggregation. There was a positive coordination relationship between the mites and chigger mites in their related species. Conclusion there are some species of chigger mites in Yunnan Province, but they are not the main species. The mites are mainly distributed in hot, humid low latitude and outdoor habitat in low elevation valley dam area. The host specificity is low. It is mainly parasitic in the host, such as yellow thorax mice, and it is clustered.
【作者单位】：大理大学病原与媒介生物研究所云南省自然疫源性疾病防控技术重点实验室;
【基金】：国家自然科学基金项目(No.81460313,81672055)
【分类号】：R384.4
【正文快照】： ***恙螨是一个节肢动物类群,全球已知恙螨超过3 000种,我国超过400种[1-4]。恙螨的生活史复杂,仅幼虫阶段营体表寄生生活,目前对恙螨的研究主要集中在幼虫阶段[1,3-4]。恙螨是恙虫病的唯一传播媒介,恙虫病是由恙虫东方体(即:恙虫立克次体)引起的急性自然疫源性疾病,通过恙螨幼

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