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

Autor(en): Rodriguez-Sanchez, Cdsar
Sittenfeld, Ana
Janzen, Daniel H.
Espinoza, Ana M.
Stichwörter: Bacillus thuringiensis; BACTERIA; Biology; caterpillars; conserved wildlands; DELTA-ENDOTOXIN; fecal pellets; food plants; insect guts; LEPIDOPTERAN; Life Sciences & Biomedicine - Other Topics; MICROFLORA; PLANTS; SOILS; STRAINS
Erscheinungsdatum: 2006
Herausgeber: REVISTA DE BIOLOGIA TROPICAL
Journal: REVISTA DE BIOLOGIA TROPICAL
Volumen: 54
Ausgabe: 2
Startseite: 265
Seitenende: 271
Zusammenfassung: 
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 feeding on 15 different species of host plants in dry, cloud and rain forests located in the Area de Conservacion 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 caterpillar 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.
ISSN: 00347744

Show full item record

Page view(s)

1
Last Week
0
Last month
0
checked on Feb 23, 2024

Google ScholarTM

Check