Aggregation tendency and distribution pattern of adult Aedes albopictus mosquitoes captured by mosquito ovitraps

doi:10.11853/j.issn.1003.8280.2021.04.020

Abstract

Abstract: Objective To investigate the aggregation tendency and distribution pattern of adult Aedes albopictus mosquitoes captured by mosquito ovitraps. Methods From July 12 to October 18, 2020, 60 mosquito ovitraps were placed in Zhujing and Langxia towns of Jinshan district, Shanghai, and 50 mosquito ovitraps were placed in Tinglin town each week to monitor the density of Ae. albopictus, and a database was established based on the data of the adult mosquitoes captured. The Skewness-Kurtosis test was used to test the normal distribution of adult Ae. albopictus mosquitoes captured by each mosquito ovitrap; the negative binomial goodness of fit was used to test whether the adult Ae. albopictus mosquitoes captured obeyed the negative binomial distribution, and the weighted estimation method in the moment method was used to calculate the common k_c value of negative binomial distribution. Stata 14.0 software was used for statistical analysis. Results A total of 2 171 mosquito ovitraps were collected for the 13 times of monitoring in Jinshan district, and 767 adult Ae. albopictus mosquitoes were captured. In Zhujing, Langxia, and Tinglin towns, the mean of adult mosquitoes was higher than the median, and the variance was greater than the mean, which suggested aggregated distribution. The Skewness-Kurtosis test showed P<0.001, indicating positively skewed distribution. The goodness of fit test of negative binomial distribution showed a chi-square value of 6.389 (P=0.172), and the adult Ae. albopictus mosquitoes in the mosquito ovitrap obeyed negative binomial distribution, with a k_c value of 0.522 (χ²= 18.297, P=0.107). Conclusion The adult Ae. albopictus mosquitoes captured by mosquito ovitraps show aggregated and positively skewed distribution, which obeys negative binomial distribution.

Key words: Mosquito ovitrap, Negative binomial distribution, Common k_c value, Aedes albopictus

摘要： 目的研究诱蚊诱卵器捕获白纹伊蚊成蚊的聚集趋势和分布型。方法 2020年7月12日至10月18日，在上海市金山区朱泾和廊下镇每次放置60个诱蚊诱卵器，亭林镇放置50个诱蚊诱卵器对白纹伊蚊进行密度监测，以此捕获的白纹伊蚊成蚊数据建立数据库。采用Skewness/Kurtosis检验进行每个诱蚊诱卵器捕获成蚊的正态分布检验；采用负二项拟合优度检验捕获的白纹伊蚊成蚊是否服从负二项分布，并使用矩法中的加权估计法计算其负二项分布的公共k_c值。采用Stata 14.0软件进行统计分析。结果在金山区3个街镇13次监测共回收2 171个诱蚊诱卵器，捕获白纹伊蚊成蚊767只，朱泾、廊下和亭林镇均表现为白纹伊蚊成蚊均数>中位数，方差>均数，属聚集性分布。Skewness/Kurtosis检验均P<0.001，分布属正偏态分布。负二项分布的拟合优度检验，χ²=6.389，P=0.172，诱蚊诱卵器中白纹伊蚊成蚊分布服从负二项分布（k_c=0.522，χ²=18.297，P=0.107）。结论诱蚊诱卵器捕获白纹伊蚊成蚊的分布属聚集性、正偏态分布，服从负二项分布。

关键词: 诱蚊诱卵器, 负二项分布, 公共k_c值, 白纹伊蚊

CLC Number:

R384.1
Q-332

XU Feng, WANG Tang, SONG Can-lei, ZHOU Yi-bin. Aggregation tendency and distribution pattern of adult Aedes albopictus mosquitoes captured by mosquito ovitraps[J]. Chines Journal of Vector Biology and Control, 2021, 32(4): 481-486.

许峰, 王唐, 宋灿磊, 周毅彬. 诱蚊诱卵器捕获白纹伊蚊成蚊聚集趋势及分布型的研究[J]. 中国媒介生物学及控制杂志, 2021, 32(4): 481-486.

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