Effect of aqueous and oil-based formulations of 13 native isolates of Beauveria bassiana (Ascomycota) on Rhodnius prolixus (Triatominae) under experimental conditions
Rhodnius prolixus is the main vector of Chagas disease in Venezuela. The present study aimed to evaluate the effect of aqueous and 50% soy bean oil-based formulations (1x107 conidia/ml) of 13 native Beauveria bassiana (Fungi: Ascomycota) isolates on fourth instar nymphs of Rhodnius prolixus. The con...
| Autores: | , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | Perú |
| Recursos: | Universidad Nacional Mayor de San Marcos |
| Repositorio: | Revistas - Universidad Nacional Mayor de San Marcos |
| Idioma: | español |
| OAI Identifier: | oai:revistasinvestigacion.unmsm.edu.pe:article/12564 |
| Acesso em linha: | https://revistasinvestigacion.unmsm.edu.pe/index.php/veterinaria/article/view/12564 |
| Access Level: | acceso abierto |
| Palavra-chave: | biorational control Beauveria bassiana Chagas disease Rhodnius prolixus oil-based formulations control biorracional enfermedad de Chagas formulaciones aceitosas |
| Resumo: | Rhodnius prolixus is the main vector of Chagas disease in Venezuela. The present study aimed to evaluate the effect of aqueous and 50% soy bean oil-based formulations (1x107 conidia/ml) of 13 native Beauveria bassiana (Fungi: Ascomycota) isolates on fourth instar nymphs of Rhodnius prolixus. The conidial suspension were used under laboratory conditions (26 ºC; RH >90%). The treatment was by immersion and mortality and conidiation were evaluated daily for 24 days. The results showed that the fungal soy-bean oil formulations tested were more effective than the aqueous suspension, as attained significantly higher mortality and efficacy percentages and decreased LT50 in the 13 isolates (p88%). LF14 and LF13 isolates showed a higher percentage of accumulated mortality, efficacy and a lowest LT50 in aqueous formulations as well as in oil-based ones. These B. bassiana isolates appears to be considered as good candidates to be tested under field conditions in biorational control programmes for Chagas disease vectors. |
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