Author(s): Sobral, Samilla Alves ; Ferreira, Bruna Silva ; Senna, Caio Colodette ; Ferraz, Carolina Magri ; Moreira, Tiago Facury ; Junior, Otavio Luiz Fidelis ; Hiura, Emy ; Tobias, Fernando Luiz ; Machado, Rosangela Zacarias [UNESP] ; de Araújo, Jackson Victor ; Braga, Fabio Ribeiro
Date: 2019
Persistent ID: http://hdl.handle.net/11449/189424
Origin: Oasisbr
Subject(s): Biological control; Nematophagous fungi; Occurrence; Production; Rhabditis spp
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
Fundação Estadual de Amparo à Pesquisa do Estado do Espírito Santo
The objectives of this study were to describe occurrences of Rhabditis spp. causing parasitic otitis in dairy cattle of Gir breed in the state of Espírito Santo, southeastern Brazil, and to evaluate the biological control of this nematode using the nematophagous fungi Duddingtonia flagrans (AC001) and Monacrosporium thaumasium (NF34). After nematode detection and collection, three groups were formed: two groups that were treated, respectively, with the fungal isolates; and a control group, without fungus. The treatments were as follows: (a) Petri dishes containing the culture medium 2% water agar (WA) + 250 nematodes + AC001; (b) Petri dishes containing 2% WA + 250 nematodes + NF34; and (c) Petri dishes containing only 2% WA + 250 nematodes. After seven days at 27 °C the treatments with fungi were able to capture and destroy the nematodes, with percentages of 82.0% (AC001) and 39.0% (NF34) in relation to the control group. The results demonstrate the occurrence of Rhabditis spp. after animals physical examination and that there was efficacy of the in vitro predatory activity of both fungal isolates. Thus, these results are important because they can assist in future in vivo control of this nematode in cattle.
Laboratório de Parasitologia Experimental e Controle Biológico Universidade Vila Velha – UVV
Departamento de Clínica de Animais de Grande Porte Universidade Vila Velha – UVV
Laboratório de Microbiologia Universidade Vila Velha – UVV
Departamento de Patologia Veterinária Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal – FCAV Universidade Estadual Paulista Júlio de Mesquita Filho – UNESP
Laboratório de Parasitologia Veterinária Departamento de Veterinária Universidade Federal de Viçosa – UFV
Departamento de Patologia Veterinária Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal – FCAV Universidade Estadual Paulista Júlio de Mesquita Filho – UNESP
