CEPAVE   05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
artículos
Título:
Use of the neotropical fish Cnesterodom decemmaculatus for long-term control of Culex pipiens L. in Argentina.
Autor/es:
TRANCHIDA, M. C.; PELIZZA, S. A.; BISARO, V.; BELTRÁN, C.; GARCÍA , J. J; MICIELI, M. V.
Revista:
BIOLOGICAL CONTROL
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Año: 2009 vol. 53 p. 183 - 187
ISSN:
1049-9644
Resumen:
We released the native mosquito fish, Cnesterodon decemmaculatus, into suburban 36 drainage ditches to evaluate its potential as a long-acting agent for the control of Culex pipiens larvae in natural breeding sites. The inoculation of predatory fish was conducted in 9 ditches at three densities: 1, 7, and 13 fish/m2 during a 2-year period (2006—2008). The number of immature stages of Cx. pipiens was recorded before and after release. On a monthly basis, the digestive-tract contents of some fish and the average number of 41 offspring from the females was recorded. Fifteen weeks after release, a 99% reduction in the number of immature mosquito stages was recorded in the drainage ditches 43 containing 13 fish/m2, while at 22 weeks, a 99% reduction was also observed in those with 7 fish/m2. The ditches with 1 fish/m2 had lower densities of immature mosquito 45 stages relative to the controls, but over the entire experiment these observations did not prove statistically significant. The number of offspring per adult C. decemmaculatus 47 female ranged from 4 ± 1.4 (mean ± SD) to 7.4 ± 0.9. Larval remains were detected in the fish collected in January, February, March, June, and September of 2006.