Species abundance distribution and ecological niches of chigger mites on small mammals in Yunnan province, southwest China
Species abundance distribution and ecological niches of chigger mites on small mammals in Yunnan province, southwest China
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云南省小型哺乳动物恙螨物种丰度分布及生态位
DOI：
10.1515/biolog-2017-0119
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发表时间：
2017-09-01
期刊：
影响因子：
1.5
通讯作者：
Yang, Zhi-Hua
中科院分区：
文献类型：
--
作者：
Peng, Pei-Ying;Guo, Xian-Guo;Yang, Zhi-Hua
研究了2001 - 2015年云南省34个地点捕获的小型哺乳动物宿主恙螨的生态位和物种丰度分布。采用Levins' s生态位宽度法和Colwell-Futuyma's方法定量评价宿主选择的特异性和相似性。采用层次分析法分析螨种间生态位重叠情况。大多数螨类寄主范围广，寄主特异性较低。不同螨种间的生态位重叠与其分类位置无关。不同属螨种的生态位重叠程度高，同一属螨种的生态位重叠程度低。采用Preston对数正态分布模型拟合了最优势寄主褐家鼠螨类群落丰度分布的理论曲线。然后根据Preston的方法粗略估计了预期的螨种总数。螨种丰度分布的理论曲线趋势表明，螨种以稀有种为主，优势种较少，个体数量较多。结果表明，小黄胸鼠的螨类总数预计为224种，抽样调查中可能遗漏了92种。
The ecological niches and species abundance distributions of chigger mites were studied on small mammal hosts captured from 34 sites in Yunnan Province of southwest China between 2001 and 2015. Levins' niche breadth and Colwell-Futuyma's method were used to quantitatively evaluate host-specificity and similarity of host selection. Hierarchical analysis was used to illustrate niche overlap among mite species. Most mite species had a wide range of hosts with low host specificity. The niche overlaps between different mite species did not correlate with their taxonomic positions. Some mite species from different genera showed high niche overlaps and some others within the same genus showed low niche overlaps. Preston's lognormal distribution model was used to fit the theoretical curve of species abundance distribution of mite community on Rattus tanezumi, the most dominant host species. The total expected mite species were then estimated roughly based on Preston's method. The theoretical curve tendency of species abundance distribution indicated that the majority of mite species were rare species and that there were few dominant species with abundant individuals. The total expected number of mite species on R. tanezumi was estimated to be 224 species, and 92 species were likely missed in the sampling investigation.