The biological control of Ancylostoma spp. dog infective larvae by Duddingtonia flagrans in a soil microcosm.
Vet Parasitol
; 173(3-4): 262-70, 2010 Oct 29.
Article
em En
| MEDLINE
| ID: mdl-20663612
Experiments to evaluate the potential ability of the nematode-trapping fungus Duddingtonia flagrans (Isolate CG768) to prey on the Ancylostoma spp. dog infective larvae (L(3)) in pasteurized soil were performed through several laboratory assays. A microcosm approach was used with increasing fungal concentrations in an inoculum of a chlamydospore water suspension. The highest fungal concentrations provide a more consistent larval reduction than the lowest concentrations, but no difference was observed from 10,000 to 25,000 chlamydospores per grain of soil. When using D. flagrans in a water suspension, in white rice and in milled maize, there were reductions in the larval population of 72.0%, 78.4% and 79.4%, respectively, but there was no difference between white rice and milled maize (p<0.05). To evaluate the nematode control by D. flagrans inoculated in milled maize at 10,000 chlamydospores per grain of soil under greenhouse conditions, observations were performed at 10, 15, 20, 25 and 30 days after inoculation and the percent reduction in the larval population was 61.4%, 73.2%, 70.8%, 64.5% and 57%, respectively (p<0.05). There was an inverse relationship between the number of L(3) recovered from the soil and the total days of exposure to the fungus (p<0.05). These results showed that D. flagrans could present some potential to be used as a non-chemotherapeutic alternative for regulation of Ancylostoma spp. populations in the environment.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ascomicetos
/
Microbiologia do Solo
/
Zoonoses
/
Controle Biológico de Vetores
/
Doenças do Cão
/
Ancylostoma
/
Ancilostomíase
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Revista:
Vet Parasitol
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Holanda