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      Occurrence, pathogenicity, and control of acanthocephalosis caused by Neoechinorhynchus buttnerae: A review Translated title: Ocorrência, patogenicidade, e controle de acantocefalose causada por Neoechinorhynchus buttnerae: uma revisão

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          Abstract

          Abstract Infections negatively influence the production of tambaqui, and in north Brazil, the wide distribution of this parasitic disease has generated concern among fish farmers. The objective of this study was to review published literature on this pathogen. Six main online research databases were searched using the keywords “Neoechinorhynchus buttnerae”, “acantocefalose”, and “acanthocephalan fish”. Based on a set of predetermined criteria, 39 publications were selected for this review. The mechanism of pathogenic action of N. buttnerae is related to the degree of penetration of the proboscis. Infection results in histopathological and morphological changes in the host. The recurrence of the parasite in the northern region was greater twelve years after their first occurrence. The lack of specific legislation on veterinary products for aquatic animals, combined with the neglect of good management practices, and the absence of a contingency plan for the control of acanthocephalan infections have contributed to the current health situation of Colossoma macropomum northern Brazil. Additional information about the occurrence of the disease, pathogenicity, and control of acanthocephalan infections are imperative for developing a disease contingency plan in the region and research to address these should be encouraged by the sector.

          Translated abstract

          Resumo As infecções influenciam negativamente a produção de tambaqui e, no norte do Brasil, a ampla distribuição dessa doença parasitária tem gerado preocupação entre os piscicultores. O objetivo deste estudo foi revisar a literatura publicada sobre esse patógeno. Seis principais bancos de dados de pesquisa on-line foram investigados usando-se as palavras-chave “Neoechinorhynchus buttnerae”, “acantocefalose” e “acantocéfalos de peixe”. Com base em um conjunto de critérios predeterminados, 39 publicações foram selecionadas para esta revisão. O mecanismo de ação patogênica de N. buttnerae está relacionado ao grau de penetração da probóscide. A infecção resulta em alterações histopatológicas e morfológicas no hospedeiro. A recorrência do parasito na região Norte foi maior, doze anos após sua primeira ocorrência. A falta de legislação específica sobre produtos veterinários para animais aquáticos, combinada com a negligência de boas práticas de manejo e com a ausência de um plano de contingência para o controle de infecções por acantocéfalos, contribuíram para a atual situação sanitária em Colossoma macropomum na região Norte do Brasil. Informações adicionais sobre a ocorrência da doença, patogenicidade e controle de infecções por acantocéfalos são imprescindíveis para o desenvolvimento de um plano de contingência de doenças na região e pesquisas para resolvê-las devem ser incentivadas pelo setor.

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          Most cited references26

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          An overall estimation of losses caused by diseases in the Brazilian fish farms

          Parasitic and infectious diseases are common in finfish, but are difficult to accurately estimate the economic impacts on the production in a country with large dimensions like Brazil. The aim of this study was to estimate the costs caused by economic losses of finfish due to mortality by diseases in Brazil. A model for estimating the costs related to parasitic and bacterial diseases in farmed fish and an estimative of these economic impacts are presented. We used official data of production and mortality of finfish for rough estimation of economic losses. The losses herein presented are related to direct and indirect economic costs for freshwater farmed fish, which were estimated in US$ 84 million per year. Finally, it was possible to establish by the first time an estimative of overall losses in finfish production in Brazil using data available from production. Therefore, this current estimative must help researchers and policy makers to approximate the economic costs of diseases for fish farming industry, as well as for developing of public policies on the control measures of diseases and priority research lines.
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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

                Journal
                rbpv
                Revista Brasileira de Parasitologia Veterinária
                Rev. Bras. Parasitol. Vet.
                Colégio Brasileiro de Parasitologia Veterinária (Jaboticabal, SP, Brazil )
                0103-846X
                1984-2961
                2020
                : 29
                : 3
                : e008320
                Affiliations
                [04] orgnameUniversidade do Porto, Porto orgdiv1Faculdade de Ciências orgdiv2Departamento de Biologia Portugal
                [03] AM orgnameUniversidade Nilton Lins, Manaus orgdiv1Programa de Pós-graduação em Aquicultura Brasil
                [02] Manaus Amazonas orgnameUniversidade Federal do Amazonas orgdiv1Departamento de Ciências Pesqueiras orgdiv2Laboratório de Sanidade de Animais Aquáticos Brazil
                [01] Amazonas orgnameUniversidade Federal do Amazonas orgdiv1Pós-graduanda do Programa em Ciências Pesqueiras nos Trópicos Brazil
                [05] Manaus Amazonas orgnameUniversidade Federal do Amazonas orgdiv1Instituto de Ciências Biológicas orgdiv2Departamento de Morfologia Brazil
                Article
                S1984-29612020000300201 S1984-2961(20)02900300201
                10.1590/s1984-29612020070
                dff07122-03df-425b-a45c-46c5b5dc1109

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

                History
                : 03 July 2020
                : 13 April 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 39, Pages: 0
                Product

                SciELO Brazil

                Categories
                Review Articles

                life cycle,treatment,tambaqui,fish farm,Acanthocephala,tratamento,piscicultura,ciclo de vida

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