Cavalcanti Luciano Pamplona de Góes, de Paula Francisco José Júnior, Pontes Ricardo José Soares, Heukelbach Jorg, Lima José Wellington de Oliveira
Department of Community Health, School of Medicine, Federal University of Ceará, Brazil 60.430-140.
J Med Entomol. 2009 Jul;46(4):841-4. doi: 10.1603/033.046.0414.
The two fish species Betta splendens (Regan) and Poecilia reticulata (Peters) are known predators of Aedes aegypti (L., 1762) larvae. Both species have been used for biological control in northeastern Brazil. However, the feasibility of these fish for the control of Ae. aegypti larvae in domestic containers may be limited by their survival in chlorinated water, as supplied by the public water system. We exposed fish to three different concentrations of chlorine: 1, 1.5, and 2.0 mg/liter. All B. splendens survived at 1.0 mg/liter chlorine concentration; 72.5 and 39.3% of B. splendens survived chlorine concentrations of 1.5 and 2.0 mg/liter, respectively. In contrast, only 4.4% of P. reticulata survived at a chlorine concentration of 1.0 mg/liter. We conclude that B. splendens may be an appropriate species for biological control of Ae. aegypti in domestic water tanks.
两种鱼类，即暹罗斗鱼（雷根）和孔雀鱼（彼得斯），是埃及伊蚊（林奈，1762年）幼虫已知的捕食者。这两种鱼都已在巴西东北部用于生物防治。然而，这些鱼类用于控制家庭容器中埃及伊蚊幼虫的可行性可能会受到它们在公共供水系统提供的氯化水中存活能力的限制。我们将鱼暴露于三种不同浓度的氯中：1、1.5和2.0毫克/升。所有暹罗斗鱼在氯浓度为1.0毫克/升时都存活下来；在氯浓度为1.5和2.0毫克/升时，分别有72.5%和39.3%的暹罗斗鱼存活。相比之下，在氯浓度为1.0毫克/升时，只有4.4%的孔雀鱼存活。我们得出结论，暹罗斗鱼可能是家庭水箱中生物防治埃及伊蚊的合适物种。
