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      Parasitic fauna of eight species of ornamental freshwater fish species from the middle Negro River in the Brazilian Amazon Region Translated title: Fauna parasitária de oito espécies de peixes ornamentais de água doce do médio Rio Negro na Amazônia brasileira

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          Abstract

          Twenty-seven specimens of cardinal tetra Paracheirodon axelrodi, 33 rosy tetra Hyphessobrycon copelandi (Characidae), 28 marbled hatchetfish Carnegiella strigata, 26 blackwing hatchetfish Carnegiella martae (Gasteropelecidae), 27 bodó Ancistrus hoplogenys (Loricariidae), 31 brown pencilfish Nannostomus eques, 38 oneline pencilfish Nannostomus unifasciatus (Lebiasinidae) and 13 angelfish Pterophyllum scalare (Cichlidae) were collected from the middle Negro River, State of Amazonas, Brazil, for parasitological studies. Out of the total of 223 fish examined, 143 (64.1%) were parasitized by at least one parasite species. The highest prevalence rate was for Monogenea (36.7%), followed by Ichthyophthirius multifiliis (Ciliophora) (20.6%), Trichodina spp. (Ciliophora) (4.0%), Piscinoodinium pillulare (Dinoflagellida) (1.3%), Tetrahymena sp. (Ciliophora) (0.89%), and Procamallanus sp. (Nematoda) (0.4%). All eight fish species had Monogenea (Gyrodactylidae and Dactylogyridae) in the gills, but the highest prevalence occurred in P. scalare and the lowest in P. axelrodi and C. strigata. However, the highest mean intensity of Monogenea was found in P. scalare and A. hoplogenys. The protozoan I. multifiliis occurred in the six ornamental fish species examined, but C. strigata and C. martae had higher prevalence and mean intensity. Trichodina spp. were found only in the gills of C. strigata, C. martae and N. eques, and with higher mean intensity in C. strigata. On the other hand, the protozoan P. pilullare was found only in the gills of C. martae. This is the first report of Tetrahymena sp. in Brazil, and it occurred in the gills of C. strigata.

          Translated abstract

          Para estudos parasitológicos, 27 espécimes de cardinal Paracheirodon axelrodi, 33 rosa-céu Hyphessobrycon copelandi (Characidae), 28 peixes borboleta Carnegiella strigata e 26 Carnegiella martae (Gasteropelecidae), 27 bodó ou cascudo Ancistrus hoplogenys (Loricariidae), 31 peixes-lápis Nannostomus eques e 38 Nannostomus unifasciatus (Lebiasinidae) e 13 acará-bandeira Pterophyllum scalare (Cichlidae) foram coletados no médio Rio Negro, estado do Amazonas, Brasil. Em um total de 223 peixes examinados, 143 (64,1%) estavam parasitados por pelo menos uma espécie de parasito. A maior taxa de prevalência foi de Monogenea (36,7%), seguida de Ichthyophthirius multifiliis (Ciliophora) (20,6%), Trichodina spp. (Ciliophora) (4,0%), Piscinoodinium pillulare (Dinoflagellida) (1,3%), Tetrahymena sp. (Ciliophora) (0,89%) e Procamallanus sp. (Nematoda) (0,4%). Todas as oito espécies de peixes mostraram Monogenea (Gyrodactylidae and Dactylogyridae) nas brânquias, mas a maior prevalência ocorreu em P. scalare e menor em P. axelrodi e C. strigata. Porém, maior intensidade média de Monogenea foi encontrada em P. scalare e A. hoplogenys. O protozoário I. multifiliis ocorreu nas seis espécies de peixes ornamentais examinadas, porém C. strigata e C. martae tiveram a maior prevalência e intensidade média. Trichodina spp. foram encontradas somente nas brânquias de C. strigata, C. martae e N. eques, mas a maior intensidade média foi em C. strigata. Por outro lado, o protozoário P. pilullare foi encontrado somente nas brânquias de C. martae. No Brasil, este é o primeiro relato de Tetrahymena sp. e ocorreu nas brânquias de C. strigata.

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          Amazon fish parasites

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            Fauna parasitária de peixes oriundos de "pesque-pague" do município de Franca, São Paulo, Brasil. I. Protozoários

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              Parasitic infections in freshwater ornamental fish in Sri Lanka

              A total of 1520 ornamental fish of 13 species from 26 export farms in Sri Lanka were collected between October 1999 and March 2000 and examined for parasites. Fish species examined were guppy Poecilia reticulata, goldfish Carassius auratus, platy Xiphophorus maculatus, molly Poecilia sphenops, angel Pterophyllum scalare, swordtail Xiphophorus helleri, tetras Hyphessobrycon species, barbs Capeota and Puntius spp., gourami Colisa sp., carp Cyprinus carpio, fighters Betta spelendens and others (Brachydanio and Astronotus spp.). Nine species of monogenean trematodes (Dactylogyrus extensus, Dactylogyrus cf. extensus, D. vastator, Dactylogyrus cf. vastator Dactylogyrus spp., Gyrodactylus turnbulli, G. katherineri, Gyrodactylus cf. katherineri, Gyrodactylus spp.), 7 protozoan species (Trichodina nigra, Trichodina spp., Tetrahymena corlissi, T. pyriformis, Ichthyophthirius multifiliis, Ichthyobodo necator, Piscinoodinium spp.), 3 species of copepod arthropods (Lernaea cyprinacea, Ergasilus ceylonensis, Argulus foliaceus), 1 metacercarial stage of a digenean trematode (Centrocestus spp.) and 1 nematode (Capillaria spp.) were identified. Parasites were found in fish from 23 of the 26 farms with an overall prevalence of parasitism in 45.3% of fish. The variation in farm prevalence among different parasites was significant (p < 0.01). Fish infection rates with monogenean trematodes, protozoans, copepod crustaceans, digenean trematodes and nematodes were 28.3, 18.4, 4.8, 0.8 and 0.4%, respectively. In all, 50 out of 590 (50/590) guppies were infected with Tetrahymena, compared with 13/930 for all other species, which is a statistically significant result (p < 0.01). Similarly, 13/44 and 18/44 carp were infected with Argulus foliaceus and Lernaea cyprinacea, compared with 7/1476 and 15/1476, respectively, for all other species combined (p < 0.01). Capillaria spp. was found only in guppies (4/590) and angel fish (3/92) while Centrocestus spp. was found in goldfish (12/153) only.
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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
                June 2010
                : 19
                : 2
                : 103-107
                Affiliations
                [02] orgnameUniversidade Federal do Amazonas orgdiv1Instituto de Ciências Biológicas orgdiv2Programa de Pós-graduação em Diversidade Biológica
                [03] orgnameUniversidade Federal de Santa Catarina orgdiv1Departamento de Aquicultura orgdiv2Laboratório de Sanidade de Organismos Aquáticos
                [01] Amapá orgnameEmpresa Brasileira de Pesquisa Agropecuária orgdiv1Laboratório de Aquicultura e Pesca
                Article
                S1984-29612010000200007 S1984-2961(10)01900207
                10.1590/S1984-29612010000200007
                84e70b88-95c4-4fa1-9876-fcda637f8dbb

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

                History
                : 15 December 2009
                : 05 May 2010
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 18, Pages: 5
                Product

                SciELO Brazil

                Categories
                Full Article

                parasites,prevalence,Infecção,sanidade,sanity,prevalência,parasitos,Monogenea,Infection

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