In vitro biological control of infective larvae of Ancylostoma ceylanicum

• Autor(a) principal: Fernandes, Fernanda Mara
• Data de Publicação: 2012
• Outros Autores: Araújo, Jackson Victor, Braga, Fabio Ribeiro, Gazzinelli-Guimarães, Pedro Henrique, Araujo, Juliana Milani, Ferreira, Sebastião Rodrigo, Carvalho, Rogério Oliva, Mello, Ingrid Ney Kramer de, Fujiwara, Ricardo Toshio
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://dx.doi.org/10.1590/S1984-29612012000300018; http://www.locus.ufv.br/handle/123456789/12207
• topic: Nematophagous fungi; Ancylostoma ceylanicum; Duddingtonia flagrans; Biological control

The aim of this study was to evaluate the predatory activity of the fungus Duddingtonia flagrans (AC001) on infective larvae of Ancylostoma ceylanicum after gastrointestinal transit in hamsters. Twenty animals were used in the experiment, divided into two groups: a treated group (10 animals) and a control group (10 animals). In the group treated with D. flagrans, each animal received mycelium from the AC001 isolate, at an oral dose of 5 mg/25 g of live weight. To evaluate the predatory activity of the fungus, fecal samples were collected from the animals in both groups, at the times of 6, 8, 12, 24 and 36 hours after the treatment. Then, subsamples of 2 g of feces were placed in Petri dishes containing 2% water-agar (2% WA) culture medium and 1000 L3 of A. ceylanicum. Over the study period, the following percentage reductions were observed: 43.2% (6 hours), 30.8% (8 hours), 25.8% (12 hours), 30% (24 hours) and 11% (36 hours). The fungus D. flagrans presented predatory activity on the L3 of A. ceylanicum, after passing through the hamsters' gastrointestinal tract. It was therefore concluded that the fungus D. flagrans may be an alternative for biological control of the L3 of A. ceylanicum.