Zuo X H, Guo X G
Vector Laboratory, Institute of Pathogens and Vectors, Dali University, Dali, Yunnan, China.
Med Vet Entomol. 2011 Dec;25(4):421-7. doi: 10.1111/j.1365-2915.2011.00948.x. Epub 2011 Apr 1.
Determining the distribution patterns of ectoparasites is important for predicting the spread of vector-borne diseases. A simple epidemiological model was used to compare the distributions of two different taxa of ectoparasitic insects, sucking lice (Insecta: Siphonaptera) and fleas (Insecta: Anoplura), on the same rodent host, Rattus norvegicus Berkenhout (Rodentia: Muridae), in Yunnan Province, China. Correlations between mean abundance and prevalence were determined. Both fleas and sucking lice were aggregated on their hosts, and sucking lice showed a higher degree of aggregation than fleas. The prevalence of both fleas and sucking lice increased with log-transformed mean abundance and a highly linear correlation and modelling efficiency of predicted prevalence against observed prevalence were obtained. The results demonstrate that prevalence can be explained simply by mean abundance.
确定体外寄生虫的分布模式对于预测媒介传播疾病的传播至关重要。使用一个简单的流行病学模型来比较两种不同类群的体外寄生昆虫，即吸虱（昆虫纲：蚤目）和跳蚤（昆虫纲：虱目），在中国云南省同一啮齿动物宿主褐家鼠（啮齿目：鼠科）上的分布情况。确定了平均丰度与患病率之间的相关性。跳蚤和吸虱在其宿主上均呈聚集分布，且吸虱的聚集程度高于跳蚤。跳蚤和吸虱的患病率均随对数转换后的平均丰度增加，并且获得了预测患病率与观察患病率之间的高度线性相关性和建模效率。结果表明，患病率可以简单地用平均丰度来解释。
