First report of Trichodinella and new geographical records of trichodinids in nile tilapia (Oreochromis niloticus) farmed in Brazil
Carregando...
Data
2019-04-01
Autores
Rodrigues, Fabrício Sado
Assane, Inácio Mateus [UNESP]
Valladão, Gustavo Moraes Ramos
de Paula, Fernanda Gomes
Andrade, Caniggia Lacerda
de Moraes, Anderson Pires
Dall’agnol, Mariana
Pascoal, Lívia Mendonça
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
Massive occurrence of trichodinids is frequently accompanied by serious disease in fish farms. In this study, trichodinid species from the gills and skin of Nile tilapia (Oreochromis niloticus) farmed in the central-western region of Brazil (state of Goiás) were morphologically characterized. Dried slides were prepared from the parasites and were impregnated with silver nitrate (2%). Morphometric characteristics were determined and schematic drawings of the denticles were made using photomicrographs produced from the slides. Seven species of trichodinid ectoparasites (Protozoa: Ciliophora: Trichodinidae) were found parasitizing the gills: four of the genus Trichodina Ehrenberg, 1838; one of Tripartiella Lom, 1959; one of Paratrichodina Lom, 1963; and one of Trichodinella Ṧrámek-Huṧek, 1953. On the body surface, three specimens of the genus Trichodina were identified. This study presents new geographical records of trichodinids in Brazil, thus confirming that Trichodina centrostrigeata, Trichodina compacta, Trichodina heterodentata, Paratrichodina africana and Tripartiella orthodens are widely distributed worldwide. Additionally, the first record of the genus Trichodinella in Brazil is presented.
Descrição
Palavras-chave
Aquaculture, Parasite, Taxonomy, Trichodiniasis, Trichodinids
Como citar
Revista Brasileira de Parasitologia Veterinaria, v. 28, n. 2, p. 229-237, 2019.