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      Metacercariae of Centrocestus formosanus (Trematoda: Heterophyidae) in Australoheros facetus (Pisces: Cichlidae) in Brazil Translated title: Metacercárias de Centrocestus formosanus (Trematoda: Heterophyidae) em Australoheros facetus (Pisces: Cichlidae) no Brasil

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          Abstract

          Heterophyid metacercariae were found in the gills of Australoheros facetus (Jenyns, 1842) collected from the Pampulha reservoir, Belo Horizonte, Minas Gerais, Brazil, between February and April 2010. The cysts were counted and used to perform experimental studies (artificial excystment and infection of mice). Fifty specimens of A. facetus were analyzed and it was found that the prevalence of infection was 100% and mean infection intensity was 134 metacercariae/fish (range: 4-2,510). Significant positive correlations were seen between total fish length and intensity of infection; between fish weight and intensity of infection, and between parasite density and fish length. Morphological analyses on metacercariae and adult parasites obtained from experimentally infected mice made it possible to identify Centrocestus formosanus (Nishigori, 1924). This is the first report of C. formosanus in A. facetus in Brazil.

          Translated abstract

          Metacercárias de Heterophyidae foram encontradas nas brânquias de Australoheros facetus (Jenyns, 1842) coletados na represa da Pampulha, Belo Horizonte, Minas Gerais, Brasil, entre fevereiro e abril de 2010. Os cistos obtidos foram contados e utilizados em estudos experimentais (desencistamento artificial e infecção de camundongos). Cinquenta exemplares de A. facetus foram analisados, sendo verificada prevalência de infecção de 100% e intensidade média de infecção de 134 metacercárias/peixe (variando entre 4 e 2510). Verificou-se correlação positiva entre a intensidade de infecção e comprimento total dos peixes; entre a intensidade de infecção e o peso dos peixes e entre a densidade parasitária e o comprimento total. A análise morfológica das metacercárias e dos parasitos adultos obtidos em camundongos experimentalmente infectados permitiu a identificação de Centrocestus formosanus (Nishigori, 1924). Este é o primeiro relato de C. formosanus em A. facetus no Brasil.

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          Most cited references29

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          Variation in the intraspecific relationship between fish length and intensity of parasitic infection: biological and statistical causes

          R Poulin (2000)
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            The Introduction and Dispersal of Centrocestus formosanus (Nishigori, 1924) (Digenea: Heterophyidae) in Mexico: A Review

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              Melanoides tuberculata (Mollusca: Thiaridae) as an intermediate host of Centrocestus formosanus (Trematoda: Heterophyidae) in Brazil

              Pleurolophocercous cercariae emerged from naturally infected Melanoides tuberculata from Minas Gerais State, Brazil, were used to perform experimental infection of laboratory-reared Poecilia reticulata. Mature metacercariae were obtained from the gills of fishes and force-fed to Mus musculus. The adult parasites which recovered from small intestines of mice were identified as Centrocestus formosanus. This is the first report of M. tuberculata as intermediate host of this heterophyid in Brazil.
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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
                September 2012
                : 21
                : 3
                : 334-337
                Affiliations
                [01] Belo Horizonte MG orgnameUniversidade Federal de Minas Gerais orgdiv1Instituto de Ciências Biológicas orgdiv2Departamento de Parasitologia Brasil
                Article
                S1984-29612012000300032 S1984-2961(12)02100332
                10.1590/S1984-29612012000300032
                2dd696f7-d52d-4a76-befe-a9d2d6663bce

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

                History
                : 01 December 2011
                : 14 March 2012
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 18, Pages: 4
                Product

                SciELO Brazil

                Categories
                Research Note

                Heterophyidae,parasitos de peixes,metacercárias,trematódeos,Minas Gerais,Brasil,fish parasites,metacercariae,trematodes,Brazil

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