Data/hora: 23/09/2024 07:22:31

Biblioteca(s): 	Embrapa Amazônia Ocidental; Embrapa Pesca e Aquicultura.	
Data corrente: 	27/09/2016	
Data da última atualização: 	29/03/2017	
Autoria: 	JERÔNIMO, G. T.; PÁDUA, S. B. de; BELO, M. A. de A.; CHAGAS, E. C.; TABOGA, S. R.; MACIEL, P. O.; MARTINS, M. L.	
Afiliação: 	Gabriela Tomas Jerônimo, Nilton Lins University; Santiago Benites de Pádua, AQUIVET Aquatic Health; Marco Antonio de Andrade Belo, Camilo Castelo Branco University; EDSANDRA CAMPOS CHAGAS, CPAA; Sebastião Roberto Taboga, São Paulo State University; PATRICIA OLIVEIRA MACIEL, CNPASA; Maurício Laterça Martins, UFSC.	
Título: 	Neoechinorhynchus buttnerae (Acanthocephala) infection in farmed Colossoma macropomum: a pathological approach.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Aquaculture, v. 469, p. 124-127, Feb. 2017.	
DOI: 	http://dx.doi.org/10.1016/j.aquaculture.2016.11.027	
Idioma: 	Inglês	
Conteúdo: 	Infection by the acanthocephalan Neoechinorhynchus buttnerae is considered the most important obstacle in farmed tambaqui or cachama (Colossoma macropomum), the second most cultivated fish species in Brazil. This study describes the occurrence of N. buttnerae in farmed this fish based on parasitological and histopathological analysis in highly infected fish. A total of 102 fish were collected from fish farms located in Brazilian states in the northern region. All of the examined fish were heavily infected by N. buttnerae and showed no signs of anorexia, but heterogeneous growth and cachexia were frequently found. No cases of mortality were observed in fish farms.Macroscopically, the intestines showed hyperaemia, hardening,thickening of the intestinalwall, yellowish mucosal secretion and a bluetongue aspect. Histological sections showed different degrees of penetration of the acanthocephalan proboscis in the intestinal tissue, surpassing the mucosa, submucosa and muscular layer, provoking dilacerations due to their spines as well as an intense in flammatory reaction composed of macrophages, Langerhans cells and lymphocytes, and granuloma formation located mainly in the submucosa layer. Submucosal oedema, an increased number of goblet cells, metaplasia areas and a reduction of the intestinal villi were also observed. The results present an important register of N. buttnerae infection in C. macropomum and contribute to the comprehension of pathogeny caused by these worms. Statement of relevance: Characidfish farming has led to significantly increased fish production in Brazil. However, the most important obstacle is the acanthocephalan infection caused by Neoechinorhynchus buttnerae in the intestinal tract. The infection does not provoke death but cachexia and growth reduction are frequently observed as well as intense pathological conditions in histological sections.	
Palavras-Chave: 	Acanthocephalans; Fish farming; Fish pathology.	
Thesagro: 	Colossoma macropomum; Peixe; Tambaqui.	
Thesaurus Nal: 	Acanthocephala; Fish culture; Histopathology.	
Categoria do assunto: 	--
L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Amazônia Ocidental (CPAA)	
Exemplares: 	CNPASA - (421-1) - UPC - AP - DD - CNPASA_AP03 -  - 2017.003 - DIS
CPAA - (35987-1) - UPC - AP - DD -  -  -  - DIS