Estudio comparativo sobre el efecto larvicida de tres especies de peces larvívoros (Gambusia affinis Baird & Girard, 1853; Poecilia reticulata Peter, 1895; Danio rerio Hamilton-Buchanan, 1822) sobre la eficacia en el control biológico de larvas del mosquito Aedes aegypti Linnaeus, 1762.

Abstract

It was carried out a comparative research regarding to the Larvicidal effect, in order to determine the effectiveness in three different kinds of fish species throughout direct observations in laboratory. This research was developed in the zoonosis lab which is located at UNIVERSIDAD DISTRITAL FRANCISCO JOSÉ DE CALDAS, in the Faculty of Environment and Natural Resources. During a month of research were placed a sample of fifty Aedes aegypti’s larvae in III and IV states inside three aquariums with fish, each one of them with a different kind of specie: (Gambusia affinis, Poecilia reticulata and Danio rerio). Aquariums implemented in this study contained 10 liters of water and fish observed had between four to six centimeters length on average. Thus, four issues per tank were introduced. Results of this research were measure by the appliance of Kolmogorov-Smirnov test, Leven and T –student tests used through the SPSS program. By observing and analyzing statistical data obtained it was determined that the Danio rerio was the best of the three species in reduction and consumption of larvae, showing a great voracity and efficiency in controlling the population of Aedes aegypti larvae. The use of fish in controlling the dengue mosquito is one of the less dangerous biological methods for the ecosystem, if it is carried out or applied in a scientific way and in compliance with the measures established in order to protect the environment and biodiversity.