Changes in hematological and biochemical parameters of tambaqui (Colossoma macropomum) parasitized by metazoan species

• Autor(a) principal: Rocha, Maria Juliete Souza
• Data de Publicação: 2018
• Outros Autores: Jerônimo, Gabriela Tomas, Costa, Oscar Tadeu Ferreira da, Malta, José C.O., Martins, Maurício Laterça, Maciel, Patrícia Oliveira, Chagas, Edsandra Campos
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional do INPA
• Texto Completo: https://repositorio.inpa.gov.br/handle/1/15602
• topic: Benzocaine; Glucose; Glucose Oxidase; Hemoglobin; Acanthocephala; Adult; Animals; Biochemical Analysis; Branchiura; Colossoma Macropomum; Fish; Glucose Blood Level; Hematocrit; Hematological Parameters; Hemoglobin Determination; Iron Deficiency Anemia; Leukocyte Count; Mean Corpuscular Hemoglobin; Mean Corpuscular Volume; Monogenea; Nonhuman; Parasitosis; Platelet Count; Prevalence; Stereomicroscopy; Thrombocytopenia; Water Quality; Animals Parasitosis; Aquaculture; Arguloida; Blood; Characiformes; Classification; Fish Disease; Helminth; Parasitology; Animal; Aquaculture; Arguloida; Characiformes; Fish Diseases; Helminthiasis, Animals; Helminths

The aim of this study was to evaluate the impacts of metazoan parasites on hematological and biochemical parameters and relative condition factor of tambaqui (Colossoma macropomum) farmed in northern Brazil. A total of 32 juvenile fish were captured from a commercial fish farm located in the municipality of Rio Preto da Eva, Amazonas state, Brazil. Parasite prevalence was 100% for Anacanthorus spathulatus, Mymarothecium boegeri and Notozothecium janauachensis, 100% for Neoechinorhynchus buttnerae and 53.13% for Dolops geayi. The greatest mean parasite intensity was found in acantocephalans followed by monogeneans and branchiuran crustaceans. A negative correlation was observed between abundance of N. buttnerae and hematocrit percentage, hemoglobin concentration, total thrombocyte count and glucose and between abundance of the monogenean and glucose concentration. Parasitic infections caused damage in tambaqui in terms of the observed hematological parameters that were characterized by hypochromic anemia and thrombocytopenia, which are important parameters to be used in parasitic diagnosis. This study is the first record of the occurrence of Dolops geayi in farmed tambaqui in the Amazon. © 2018, Brazilain Coll Veterinary Parasitology. All rights reserved.