任飞林, 沈建勇, 刘婷, 彭财伟, 刘腾, 刘光涛. 布雷图指数法与诱蚊诱卵指数法监测白纹伊蚊幼虫密度相关性分析[J]. 疾病监测, 2021, 36(9): 888-893. DOI: 10.3784/jbjc.202105250294
引用本文: 任飞林, 沈建勇, 刘婷, 彭财伟, 刘腾, 刘光涛. 布雷图指数法与诱蚊诱卵指数法监测白纹伊蚊幼虫密度相关性分析[J]. 疾病监测, 2021, 36(9): 888-893. DOI: 10.3784/jbjc.202105250294
Ren Feilin, Shen Jianyong, Liu Ting, Peng Caiwei, Liu Teng, Liu Guangtao. Correlation between Breteau index and mosquito oviposition index in surveillance for Aedes albopictus larvae density[J]. Disease Surveillance, 2021, 36(9): 888-893. DOI: 10.3784/jbjc.202105250294
Citation: Ren Feilin, Shen Jianyong, Liu Ting, Peng Caiwei, Liu Teng, Liu Guangtao. Correlation between Breteau index and mosquito oviposition index in surveillance for Aedes albopictus larvae density[J]. Disease Surveillance, 2021, 36(9): 888-893. DOI: 10.3784/jbjc.202105250294

布雷图指数法与诱蚊诱卵指数法监测白纹伊蚊幼虫密度相关性分析

Correlation between Breteau index and mosquito oviposition index in surveillance for Aedes albopictus larvae density

  • 摘要:
      目的   观察白纹伊蚊幼虫布雷图指数(BI)法与诱蚊诱卵指数(MOI)法密度变化趋势,比较不同生境下两种密度指标相关性以及风险等级一致性。
      方法   2020年4 — 12月在浙江省湖州市吴兴区(A区)和南浔区(B区)每旬各进行1次BI与MOI监测。 采用灰色关联度和Spearman相关进行BI和MOI的相关性分析,根据媒介伊蚊监测指南风险评估标准对两指数进行风险分级,采用Kappa检验比较两种方法风险等级一致性。
      结果   4 — 12月两种监测指数呈先升高再降低的单峰趋势;当密度很低或很高时(BI<5或>20),BI均高于MOI,当BI在5~20时,BI与MOI呈波动状态,4 — 7月BI高于MOI,8 — 10月MOI高于BI。 A区城镇、农村居民区两指数灰色关联度分别为0.601、0.682,B区城镇、农村居民区两指数灰色关联度分别为0.696、0.671。 A区城镇、农村居民区两指数秩相关系数分别为0.461、1.000,B区城镇、农村居民区两指数秩相关系数分别为0.531、0.444,差异均有统计学意义(P<0.05)。 A区城镇居民区两指数风险等级Kappa值为0.160,A区农村居民区Kappa值为−0.143,B区城镇居民区Kappa值为0.186,但差异均无统计学意义;而B区农村居民区Kappa值为0.180,差异有统计学意义(P<0.05)。
      结论   白纹伊蚊幼蚊密度呈季节性消长,用BI法和MOI法监测白纹伊蚊密度有一定相关性,但风险等级一致性较差。 当白纹伊蚊幼虫密度很低或很高时,BI敏感性优于MOI。

     

    Abstract:
      Objective   To observe the trend of continuous density of Aedes albopictus larvae by using Breteau Index (BI) and the Mosquito Oviposition Index (MOI), and compare the grey correlation, spearman correlation and risk grade consistency of the two density indexes in different habitats.
      Methods   The densities of Aedes albopictus in Wuxing district (place A) and in Nanxun district (place B) in Huzhou were monitored every ten days by using BI and MOI from April to December in 2020. The correlation between BI and MOI were analyzed by grey correlation and spearman correlation. The two density indexes were classified according to the risk assessment criteria of Aedes vector surveillance guidelines. And the consistency of risk grade of two methods was compared by Kappa test.
      Results   The density of Aedes albopictus indicated by BI and MOI increased first and then decreased from April to December. When the density was very low or very high (BI<5, BI>20), the BI was higher than MOI. When the density index was between 5 and 20, the BI and MOI fluctuated. The BI was higher than the MOI from April to July. However, the MOI was higher than the BI from August to October. The grey correlation degree of the BI and the MOI were 0.601 and 0.682 in urban and rural residential areas respectively in place A and 0.696 and 0.671 in urban and rural residential areas respectively in place B, and the spearman correlation coefficients of the BI and the MOI were 0.461 and 1.000 in urban and rural residential areas in place A and 0.531 and 0.444 respectively in place B, the differences were all significant (P<0.05). The Kappa value of two index risk grade in urban residential area was 0.160, the Kappa value in rural residential area was −0.143 in place A and the Kappa value in urban residential area was 0.186 in place B, but there were no significant difference, while the kappa value in rural residential area was 0.180 in B place, the difference was significant (P<0.05).
      Conclusion   The density of Aedes albopictus larvae increased and decreased seasonally. There was a certain correlation between BI and MOI in the surveillance for the seasonal density of Aaedes Aalbopictus larvae, but the consistency of risk level was not good. The sensitivity of BI is better than that of MOI when the density of Aedes is very low or high.

     

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