title: Predatory capability of the nematophagous fungus Arthrobotrys robusta preserved in silica gel on infecting larvae of Haemonchus contortus.
abstract: Biological control of gastrointestinal nematodiasis in ruminants is an alternative to reduce the number of infective larvae. The fungal isolates predatory activity preservation is a basic requirement for the success of this control type. The aim of this work is to evaluate the predatory capacity of the fungus Arthrobotrys robusta (isolate I-31), preserved on silica gel on infective larvae of Haemonchus contortus under laboratory conditions on 2 % water agar (2 % WA). In this essay, A. robusta storage on silica gel showed successful predatory activity on H. contortus L3 larvae (p < 0.01) compared to the control group. Nematophagous fungi were not observed in the control group during the experiment. There was a significant reduction (p < 0.01) of 73.84 % in the means of H. contortus (L3) recovered from treatment with isolate I-31 compared to the control without fungi. Results indicate that A. robusta (I-31) could survive stored on silica gel for at least 7 years and keep its predatory activity on H. contortus (L3).
authors: Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, MG, Cep: 3657000, Brazil, fabioribeirobraga@hotmail.com.
authors: Fabio R
authors: FR
authors: Braga
authors: Rogério O
authors: RO
authors: Carvalho
authors: André R
authors: AR
authors: Silva
authors: Jackson V
authors: JV
authors: Araújo
authors: Luiza N
authors: LN
authors: Frassy
authors: Andrea
authors: A
authors: Lafisca
authors: Filippe E F
authors: FE
authors: Soares
mesh_terms: D000818:Animals; D001203:Ascomycota / Q000502:physiology*; D006189:Haemonchus / Q000382:microbiology*; D007814:Larva / Q000382:microbiology; D010572:Pest Control, Biological; D011309:Preservation, Biological / Q000379:methods*; D058428:Silica Gel
chemical_list: D058428:Silica Gel