Avaliação da Eficácia do Bacillus thuringiensis var. israelensis no Controle de Formas Imaturas do Aedes (Stegomyia) aegypti (Linnaeus, 1762) em Ambiente de Laboratório
Aedes aegypti is considered a cosmopolitan mosquito that lives in tropical and subtropical region. In Brazil, it´s habitat is restricted to cities and villages, living next to humans and being rarelly found in a place with low human density. This especies is the only vector of Dengue and Yellow Feve...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Artículo |
| Lenguaje: | portugués |
| Publicado: |
Entomologistas do Brasil
2008
|
| Acceso en línea: | https://dialnet.unirioja.es/servlet/oaiart?codigo=2880406 |
| Etiquetas: |
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | Aedes aegypti is considered a cosmopolitan mosquito that lives in tropical and subtropical region. In Brazil, it´s habitat is restricted to cities and villages, living next to humans and being rarelly found in a place with low human density. This especies is the only vector of Dengue and Yellow Fever virus in all brasilian nacional territory. It´s considered one of the most important vectors relationed with the transmission of patogens to humans. The social concearn with the environment and the mosquito´s resistance to chemical insecticides, resulted on the seach of an alternative method to the control of Ae. aegypti. An entomopathogenic bacteria, Bacillus thuringiensis var. israelensis, is an alternative method control. The objective of this work was to measure the eficacy of this bacteria on the control of Ae. aegypti immature forms. In such case, 350 individuals larvae were criated in plastic glasses with 200ml of non-clorated water. In the contamination were used 5mg of B. thuringiensis var. israelensis water-dispersable grannules for each larval stage. Statistical annalises were performed by Mann-Whitney non-paramethric test. The mortality was 100%, 98%, 98%, 100% and 4%, 1st , 2nd , 3rd 4th stages and pupae, respectivelly. The mean number of live days of the contamined stages were 1,36; 2,46; 1,24; 1,22; 3,46 days. Except for the pupae, all others stages lived less longer that the control individuals (P<0,05%). B. thuringiensis var. israelensis, showed to be an effective inscticide, causing 99,5% of larvae death. And even not being abble to act in the pupae, it represents a good altrnative choice to the control of Ae. aegypti immatured forms. |
|---|