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      First record of Neoechinorhynchus buttnerae (Eoacantocephala, Neochinorhynchidae) on Colossoma macropomum (Characidae) in a fish farm in Roraima, Brazil Translated title: Primeiro registro de Neoechinorhynchus buttnerae (Eoacantocephala, Neochinorhynchidae) em Colossoma macropomum (Characidae) em uma fazenda de peixes em Roraima, Brasil

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          Abstract

          ABSTRACT Severe infections by the acanthocephalan Neoechinorhynchus buttnerae were reported in Colossoma macropomum in fish farms in northern Brazil. The occurrence of the parasite is recorded for the first time in the state of Roraima, Brazil, along with its parasite indexes. Fifty C. macropomum from a fish farm were analyzed. We collected a total of 13474 individual parasites. Neoechinorhynchus buttnerae had a prevalence of 100%, and mean intensity and mean abundance of 269.48. Significant positive correlations were observed between fish standard length, weight and relative condition factor and the number of parasites. Our results showed evident loss of body mass in the parasitized fish. Fish farmers in Roraima should be advised to manage the infection of C. macropomum by N. buttnerae, as massive infections of this parasite can deteriorate the health of the fish.

          Translated abstract

          RESUMO Infecções severas pelo acantocéfalo Neoechinorhynchus buttnerae foram relatados em Colossoma macropomum em fazendas no norte do Brasil. O objetivo do presente estudo foi avaliar o primeiro registro de ocorrência deste parasita no estado de Roraima, Brasil, relatando seus índices parasitários. Cinquenta C. macropomum de uma fazenda foram analisados. Coletamos um total de 13474 parasitas. Neoechinorhynchus buttnerae mostrou uma prevalência de 100%, com uma intensidade média e abundância média de 269,48. O comprimento padrão, peso e fator de condição relativo dos peixes foram correlacionados positiva e significativamente com o número de parasitas. Nossos resultados mostraram perda evidente de massa corporal nos peixes. Nosso registro da presença de N. buttnerae infectando C. macropomum no estado de Roraima é um alerta aos piscicultores, pois infecções massivas podem deteriorar a saúde dos peixes.

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          Most cited references16

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          Amazon fish parasites

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            Neoechinorhynchus buttnerae (Acanthocephala) infection in farmed Colossoma macropomum: A pathological approach

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              The impact of Neoechinorhynchus buttnerae (Golvan, 1956) (Eoacanthocephala: Neochinorhynchidae) outbreaks on productive and economic performance of the tambaqui Colossoma macropomum (Cuvier, 1818), reared in ponds

              ABSTRACT. This study evaluates the impact of Neoechinorhynchus buttnerae on the productive and economic performance of "tambaqui" reared in ponds. Two fish farms were selected, one with infected fish (IF) and the other with non-infected fish (NIF). Biometry, age, initial weight and handling data were collected from each studied specimen. Our results show that IF presented lower weight, evident loss of body mass and body deformities, reflecting on a condition factor 300% smaller than NIF. Infection by acanthocephalans caused an impact bigger than 200% on growth and affected the gross income directly, resulting in a difference higher than 1000% between IF and NIF farms. We conclude that this impact could be even greater if we consider both income decrease and raising production costs due to the parasite infection.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                aa
                Acta Amazonica
                Acta Amaz.
                Instituto Nacional de Pesquisas da Amazônia (Manaus, AM, Brazil )
                0044-5967
                1809-4392
                March 2018
                : 48
                : 1
                : 42-45
                Affiliations
                [1] Manaus Amazonas orgnameInstituto Nacional de Pesquisas da Amazônia orgdiv1Programa de Pós-graduação em Biologia de Água Doce e Pesca Interior - BADPI Brazil
                Article
                S0044-59672018000100042
                10.1590/1809-4392201702411
                5ac2c403-5632-4903-9553-61b3b95c9ebe

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 20 July 2017
                : 05 October 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 4
                Product

                SciELO Brazil


                Acanthocephala,intestine,parasites,parasitic indexes,tambaqui,índices parasitários,intestino,parasitas

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