论文部分内容阅读
目的了解云南省大绒鼠体表恙螨的寄生状况,包括恙螨的种类构成、优势螨种及其在不同宿主个体间的空间分布情况、主要螨种的种间关系以及雌雄宿主(大绒鼠)体表恙螨感染差异。方法汇总2001—2012年在云南省27县(市)的现场调查资料,常规统计计算大绒鼠体表恙螨的种类数和各种恙螨的构成比、感染率、平均多度和感染度等指标,并以此来反映大绒鼠体表恙螨的感染状况;用扩散系数、I指数、Cassie指数、聚块指数测定主要恙螨在大绒鼠不同个体间的空间分布情况;用协调系数分析主要恙螨之间的种间协调关系,分析比较雌雄大绒鼠体表恙螨的感染差异。结果从云南省27县市共捕获大绒鼠1 961只。从1 961只大绒鼠体表共采集到44 235只恙螨,总感染率和感染度均较高,分别为58.8%和38.3只螨/鼠。所采集到的44 235只恙螨被分类鉴定为3科12属130种。在130种恙螨中,小板纤恙螨的构成比最高,为22.6%(9 986/44 235),是云南省大绒鼠体表最主要的优势种;其次是中华纤恙螨,构成比为13.1%(5 776/44235)。空间分布分析显示,小板纤恙螨与中华纤恙螨等主要恙螨在大绒鼠不同个体间呈聚集分布格局。种间协调分析显示,小板纤恙螨与中华纤恙螨存在正协调关系(V=0.5574,P<0.01)。雌性大绒鼠与雄性大绒鼠恙螨的寄生状况有一定的差异,雄性大绒鼠的总平均多度和总感染度分别为25.1和41.0,均高于雌性大绒鼠的19.6(t=2.479,P<0.05)和34.1(t=1.985,P<0.05)。结论云南省大绒鼠体表恙螨感染普遍,恙螨种类十分丰富,小板纤恙螨是云南省大绒鼠体表最重要的优势螨种,其次是中华纤恙螨,二者之间存在正协调关系。恙螨在雌雄大绒鼠间的感染情况存在差异,雄性大绒鼠的感染度和平均多度均高于雌性。
Objective To understand the parasitism of chigger mites on the surface of the giant-eared moult in Yunnan Province, including the species composition of chigger mites, the distribution of dominant species of mites and their spatial distribution among different hosts, the interspecies relationships of major mites, Rat) body surface chigger infection difference. Methods The field survey data of 27 counties (cities) in Yunnan Province from 2001 to 2012 were collected. The number of chigger mites and the composition ratio of chigger mites, the infection rate, the average abundance and the infection degree And so on to reflect the infection status of chigger mites on the body surface of the mammoths; to determine the spatial distribution of the major chiggers mites in different individuals of the chordates by using the diffusion coefficient, the I index, the Cassie index and the agglomeration index; Coefficient analysis of the main chigger mites coordination between species, analysis of male and female giant rat body surface chigger infection differences. Results A total of 1 961 cats were captured from 27 counties in Yunnan Province. A total of 44 235 chigger mites were collected from 1 961 mammoths. The total infection rate and infection rate were 58.8% and 38.3 mites per mouse, respectively. The 44 235 chigger mites collected were classified and classified into 130 families of 12 genera, 3 families. Among the 130 species of chigger mites, the constituent ratio of chigger mites was 22.6% (9 986/44 235), which was the most dominant species in the body surface of the giant-eared moult; followed by the chigger mite The ratio was 13.1% (5776/44235). Spatial distribution analysis showed that the chigger mite and chigger mite were aggregated and distributed in different individuals. Inter-species coordination analysis showed that there was a positive correlation between chigger mites and chigger mites (V = 0.5574, P <0.01). There was a certain difference in the parasitism between male and female mammoth chiggers. The average and total infection rates of males were 25.1 and 41.0, respectively, which were higher than those of female mammoths (19.6, t = 2.479, P <0.05) and 34.1 (t = 1.985, P <0.05). Conclusion Chigger mites infection is common in the body of Mudweed in Yunnan Province and is very rich in chigger mites. Chibi mite is the most important dominant mite species on the surface of the body of Duck Mud in Yunnan Province, followed by chigger mite, There is a positive relationship. Chigger mites in the male and female between the differences between the infection of male and female Mudgeys, male mastiff infection and the average degree were higher than the female.