TOXICITY OF BOLDO PEUMUS BOLDUS MOLINA FOR SITOPHILUS ZEAMAIS MOTSCHULSKY AND TRIBOLIUM CASTANEUM HERBST

The maize weevil (Sitophilus zeamais Motschulsky) and the red flour beetle (Tribolium castaneum Herbst) are two key pests of stored-grain products worldwide. The insecticidal activity of boldo (Peumus boldus Molina) powder, liquid ethanolic and hexanic extracts against S. zeamais and T. castaneum we...

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Detalles Bibliográficos
Autores: GONZALO SILVA, AGUAYO, MARGARITA ORTIZ, U., MARITZA TAPIA, V., RODRIGUEZ M., J. CONCEPCION, LAGUNES TEJEDA, ANGEL, SANTILLAN ORTEGA, CANDELARIO, ROBLES BERMUDEZ, AGUSTIN, AGUILAR MEDEL, SOTERO
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:México
Institución:Universidad Autónoma de Nayarit
Repositorio:Repositorio Institucional Aramara de la UAN
Idioma:inglés
OAI Identifier:oai:dspace.uan.mx:123456789/908
Acceso en línea:http://dspace.uan.mx:8080/jspui/handle/123456789/908
Access Level:acceso abierto
Palabra clave:Botanical insecticides
stored grains
maize weevil
red flour beetle
BIOLOGÍA Y QUÍMICA [2]
Descripción
Sumario:The maize weevil (Sitophilus zeamais Motschulsky) and the red flour beetle (Tribolium castaneum Herbst) are two key pests of stored-grain products worldwide. The insecticidal activity of boldo (Peumus boldus Molina) powder, liquid ethanolic and hexanic extracts against S. zeamais and T. castaneum were evaluated under laboratory conditions. The evaluated variables were mortality, emergence of adult insects (F1), and grain weight loss. The experimental design was completely randomized. The mortality in S. zeamais was 100% even at the lowest powder concentration (0.5% w/w), whereas emergence of F1 adult insects was 0% and grain weight loss was ≤ 0.08%. For T. castaneum, only 8 and 16% w/w powder concentrations reached 100% mortality. The liquid ethanolic and hexanic extracts caused 100% mortality of S. zeamais, whereas only the ethanolic extract reached this value for T. castaneum. Therefore, the powder and the evaluated extracts of P. boldus were toxic for S. zeamais and T. castaneum and are promising against these and other stored-grain pests.

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