Bacillus thuringiensis in caterpillars and associated materials collected from protected tropical forests in northwestern Costa Rica

 

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Autores: Rodríguez-Sánchez, César, Sittenfeld, Ana, H. Janzen, Daniel, Espinoza, Ana M.
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2006
Descripción:Bacillus thuringiensis (Bt) synthesizes crystalline inclusions that are toxic to caterpillars (Lepidoptera) and other orders of invertebrates. Materials associated with 37 caterpillars from 16 species, collected while feed-ing on 15 different species of host plants in dry, cloud and rain forests located in the Área de Conservación Guanacaste in northwestern Costa Rica, were examined for the presence of Bt. From a total of 101 derived samples, 25 Bt isolates were cultured: 56% from host plant leaves, 8% from caterpillar guts and 36% from cater-pillar fecal pellets. Bt was isolated from at least one sample in 38% of the systems constituted by the food plant, gut and fecal pellets corresponding to a single caterpillar. Four different morphologies of crystalline inclusions were observed, with bipyramidal and irregular crystal morphologies being the most prevalent.
País:Portal de Revistas UCR
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lenguaje:Español
OAI Identifier:oai:portal.ucr.ac.cr:article/13867
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/13867
Access Level:acceso abierto
Palabra clave:Bacillus thuringiensis
larvas de mariposa
plantas hospederas
tractos intestinales de insectos
material fecal
áreas protegidas