First record of Trichodina heterodentata (Ciliophora: Trichodinidae) in banded knifefish Gymnotus carapo(Gymnotidae) cultured in Brazil.

The aim of this study was to report the first record of Trichodina heterodentata in banded knifefish Gymnotus carapo. Banded knifefish cultivated in the municipality of Jataí, state of Goiás, in the central western region of Brazil, experienced fish mortality rates of 3-4% per tank. Macroscopic analysis found that fish had lesions on their skin and gills. Smears of the integument and gills were confectioned and air-dried at room temperature and impregnated with silver nitrate to identify the Trichodinidae species causing the lesions. The trichodinid were identified as T. heterodentata, and their characteristics were compared to those from T. heterodentata recorded from other species of host fish. It was observed that the presence of T. heterodentata was associated with inadequate fish management, low water quality, high rates of stocking density, and inadequate nutritional management.

Bibliographic Details

Main Authors:	SOUSA-FILHO, I. P., MOARES. R. S., SATURNINO, K. C., TAVARES-DIAS, M., BRAGA, Í. A., ZIEMNICZAK, H. M., SOUTO, C. N., RAMOS, D. G. S.
Other Authors:	I. P. SOUSA-FILHO, CENTRO UNIVERSITÁRIO DE MINEIROS; R. S. MOARES, UNIVERSIDADE FEDERAL DE JATAÍ; K. C. SATURNINO, UNIVERSIDADE FEDERAL DE JATAÍ; MARCOS TAVARES DIAS, CPAF-AP; Í. A. BRAGA, CENTRO UNIVERSITÁRIO DE MINEIROS; H. M. ZIEMNICZAK, UNIVERSIDADE FEDERAL DA GRANDE DOURADOS; C. N. SOUTO, CENTRO UNIVERSITÁRIO DE MINEIROS; D. G. S. RAMOS, UNIVERSIDADE FEDERAL DE JATAÍ.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2022-09-23
Subjects:	Gymnotus Carapo, Trichodina,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1146765 https://doi.org/10.1590/1519-6984.240840
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