Grupo de Pesquisa em Imunoparasitologia, Universidade do Sul de Santa Catarina, Tubarão, SC.
Rev Soc Bras Med Trop. 2011 May-Jun;44(3):300-5. doi: 10.1590/s0037-86822011005000025. Epub 2011 Apr 29.
The aim of the present study was to verify the coexistence between Aedes aegypti and Aedes albopictus populations in municipalities of the States of Paraná and Santa Catarina with different urbanization profiles where dengue occurs and evaluate their susceptibility to the organophosphate temephos.
The number of eggs per ovitrap were counted and incubated for hatching to identify the species. Data analysis of the populations was conducted to determine randomness and aggregation, using the variance-to-mean ratio (index of dispersion). Susceptibility to temephos was evaluated by estimation of the resistance ratios RR50 and RR95. Aedes aegypti samples were compared with the population Rockefeller and Aedes albopictus samples were compared with a population from the State of Santa Catarina and with the Rockefeller population.
Coexistence between Aedes aegypti and Aedes albopictus and the aggregation of their eggs were observed at all the sites analyzed in the State of Paraná.
All the Aedes aegypti populations from the State of Parana showed alteration in susceptibility status to the organophosphate temephos, revealing incipient resistance. Similarly, all the Aedes albopictus populations (States of Paraná and Santa Catarina) presented survival when exposed to the organophosphate temephos.
本研究旨在验证在发生登革热的巴伊亚州和圣卡塔琳娜州具有不同城市化水平的城市中，埃及伊蚊和白纹伊蚊种群是否共存，并评估它们对有机磷涕灭威的敏感性。
对每个诱卵器中的卵数进行计数并孵育以鉴定物种。对种群数据进行分析，以确定随机性和聚集性，使用方差均值比（离散度指数）。通过估计抗性比 RR50 和 RR95 来评估对涕灭威的敏感性。将埃及伊蚊样本与洛克菲勒种群进行比较，将白纹伊蚊样本与来自圣卡塔琳娜州的种群和洛克菲勒种群进行比较。
在巴伊亚州分析的所有地点均观察到埃及伊蚊和白纹伊蚊的共存以及它们的卵聚集。
巴伊亚州的所有埃及伊蚊种群对有机磷涕灭威的敏感性均发生改变，显示出初期抗性。同样，所有白纹伊蚊种群（巴伊亚州和圣卡塔琳娜州）在接触有机磷涕灭威时都能存活。
