Biological characterization of the colombian isolate Heterorhabditis sp. SL0708 (Rhabditida: Heterorhabditidae - doi: 10.4025/actascibiolsci.v35i3.16034

• Autor(a) principal: Torres, Maria Camila Mejia
• Data de Publicação: 2013
• Outros Autores: Aponte, Adriana Sáenz
• Tipo de documento: Artigo
• Idioma: por; eng
• Título da fonte: Acta Scientiarum Biological Sciences
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/16034
• topic: entomopathogenic nematodes; infective juvenile; penetration; Heterorhabditidae; virulence; Zoologia

Heterorhabditis sp SL0708 (Rhabditida: Heterorhabditidae) is a native entomopathogenic nematode from Alcalá, Valle del Cauca (Colombia), a natural enemy of insects that can be used for controlling Plutella xylostella L, Conotrachelus psidii Marshall and Delia platura (Meigen); however its biological characterization is unknown. In order to know about the infective capacity of the isolate, tests were made with last instar larvae of Galleria mellonella (Lepidoptera: Pyrallidae) on penetration, one by one, exposure time, dose response and foraging strategy. The average infecting juveniles (IJ) entering larvae was 3 (1.5%). In the one-on-one test, larvae mortality ranged between 8.3 and 16.7%. There was no significant difference (p < 0.05) between treatments and in number of dead larvae in the exposure time and dose response assays. Heterorhabditis sp. SL0708 presented a cruiser foraging strategy, which indicates that it can be used for sessile or cryptic hosts.