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目的应用现代生态学中生态位的理论和方法,对云南省维西县碧罗雪山周边地带11种医学革螨在39种小兽宿主资源上的生态位宽度和生态位重叠进行研究。方法生态位宽度用Levins模型测定;生态位重叠用Colwell-Futuyma模型测定,并在此基础上用系统聚类分析进行生态位重叠群的划分。结果(1)11种革螨中,互助真厉螨及巴氏下盾螨的生态位最宽,分别为0.1067和0.1044,特氏厉螨及三峡血革螨的生态位最窄,分别为0.0390和0.0365;(2)特氏厉螨与土尔克厉螨的种群分布相似性及金氏厉螨、橄形血革螨与巴氏下盾螨的种群分布相似性大。结论生态位宽度可以作为评价革螨宿主特异性的定量指标,革螨种群分布的相似性与其宿主的相似性程度有着很大的关系,并受其动物分类学远近的影响。
OBJECTIVE To study the niche breadth and niche overlap of 11 kinds of medical leather mites on the resources of 39 kinds of small beet hosts in the surrounding area of Bi Luoxue Mountain in Weixi County, Yunnan Province by using the theory and method of niche in modern ecology. Methods The niche breadth was determined by Levins model. Niche overlap was determined by Colwell-Futuyma model. Based on this, the niche contigs were divided by systematic cluster analysis. Results (1) Among the 11 kinds of leather mites, the most common niche was Mizoharidae and Mabellus mites, 0.1067 and 0.1044, respectively, and the niche of Mites and Three Gorges was the smallest, 0.0390 And 0.0365 respectively. (2) The similarity in population distribution between the two species and the population distribution similarity between the two species was very high. Conclusion The niche breadth can be used as a quantitative index to evaluate the host specificity of the mite. The similarity of the distribution of mite mites has a great relationship with the host ’s similarity degree and is influenced by its taxonomic distance.