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      Monogeneos parásitos de peces de la laguna las marites, isla de margarita, Venezuela Translated title: Monogenea parasites of fish from las marites lagoon, margarita island, Venezuela Translated title: Monogeneos parasitos de peixes da lagoa las marites, ilha de margarita,Venezuela

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          Abstract

          La clase Monogenoidea representa un grupo diverso de parásitos, con ~720 géneros distribuidos en 53 familias. En el presente trabajo se describen, identifican y determinan los índices ecológicos de prevalencia (P), intensidad (I) e intensidad media (IM) de la fauna monogenea de teleósteos de la Laguna de Las Marites, costa sur-oriental de la Isla de Margarita, Venezuela. Entre mayo y octubre 2006 se examinaron 60 ejemplares de peces, para un total de 10 especies, de las cuales cinco resultaron positivas a siete especies monogeneas: Haliotrema sp. (P= 100%; I= 9-72; IM= 29,13) en Lutjanus analis; Diplectanum sp. (P= 50%; I= 1-15; IM= 8) en Mycteroperca bonaci; Neobenedenia melleni MacCalum, 1927 (P= 66,66%; I= 1-2; IM= 1,5) en Lacthoprys cuadricornis; Hamatopeduncularia sp. (P= 100%; I= 11-45; IM= 22,6); Udonella caligorum Johnston, 1835 (P= 80%; I= 6-13; IM= 8,75) y Calceostomella herzbergii Fuentes, Dezón y León, 2004 (P= 80%; I= 1-9; IM= 4,25) en Arius herzbergii; y, por último, Pterinotrematoides mexicanum Margarita y Bravo-Hollis, 1955 (P= 88,88%; I= 1-19; IM= 9,38) en Archosargus rhomboidalis. Las especies de mayor prevalencia e intensidad fueron Haliotrema sp. y Hamatopeduncularia sp. No se determinaron daños patológicos evidentes en los peces infestados.

          Translated abstract

          The class Monogenoidea represents a diverse group of parasites with ~720 genera distribuited in 53 families. Monogenea parasites are described and identified, and the ecological indexes are determined as prevalence (P), intensity (I) and mean intensity (MI) in teleostean fish, between May and October 2006 on the Las Marites lagoon, south-east of Margarita Island, Venezuela. A total of 60 fishes belonging to 10 species were sampled and seven monogenea species were found on five fish species. These were Haliotrema sp. (P=100%, I= 9-72, IM= 29.13) in Lutjanus analis; Diplectanum sp. (P= 50%, I= 1-15, IM= 8) in Mycteroperca bonaci; Neobenedenia melleni MacCalum, 1927 (P= 66.66%; I= 1-2; IM= 1.5) in Lacthoprys cuadricornis; Hamatopeduncularia sp. (P= 100%; I= 11-45; IM= 22.6), Udonella caligorum Johnston, 1835 (P= 80%; I= 6-13; IM= 8.75) and Calceostomella herzbergii Fuentes, Dezón y León, 2004 (P= 80%; I= 1-9; IM= 4.25) in Arius herzbergii; and, lastly, Pterinotrematoides mexicanum Margarita y Bravo-Hollis, 1955 (P= 88.88%; I= 1-19; IM= 9.38) in Archosargus rhomboidalis. The species with the highest prevalence and intensity were Haliotrema sp. and Hamatopeduncularia sp. Evident pathological damages were not determined in the infested fish.

          Translated abstract

          A classe Monogenoidea representa um grupo diverso de parasitos, com ~720 gêneros distribuidos em 53 famílias. No presente trabalho se descrevem, identificam e determinam os índices ecológicos de prevalência (P), intensidade (I) e intensidade média (IM) da fauna monogenea de teleósteos da Lagoa de Las Marites, costa sudeste da Ilha de Margarita, Venezuela. Entre maio e outubro 2006 foram examinados 60 exemplares de peixes, para um total de 10 espécies, das quais cinco resultaram positivas a sete espécies monogeneas: Haliotrema sp. (P= 100%; I= 9-72; IM= 29,13) em Lutjanus analis; Diplectanum sp. (P= 50%; I= 1-15; IM= 8) em Mycteroperca bonaci; Neobenedenia melleni MacCalum, 1927 (P= 66,66%; I= 1-2; IM= 1,5) em Lacthoprys cuadricornis; Hamatopeduncularia sp. (P= 100%; I= 11-45; IM= 22,6); Udonella caligorum Johnston, 1835 (P= 80%; I= 6-13; IM= 8,75) e Calceostomella herzbergii Fuentes, Dezón e León, 2004 (P= 80%; I= 1-9; IM= 4,25) em Arius herzbergii; e, por último, Pterinotrematoides mexicanum Margarita e Bravo-Hollis, 1955 (P= 88,88%; I= 1-19; IM= 9,38) em Archosargus rhomboidalis. As espécies de maior prevalência e intensidade foram Haliotrema sp. e Hamatopeduncularia sp. Não se determinaram danos patológicos evidentes nos peixes infestados.

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          Ecology of Marine Parasites

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            First published record of the pathogenic monogenean parasite Neobenedenia melleni (Capsalidae) from Australia.

            The monogenean Neobenedenia melleni (MacCallum, 1927) Yamaguti 1963 is a well-known and virulent pathogen in culture conditions recorded from the skin of many teleost fish species worldwide. Until now, N. melleni has not been reported from wild or cultured fish in Australian waters. This study documents a recent outbreak of N. melleni that occurred on Lates calcarifer (barramundi) cultivated in sea cages in Hinchinbrook Channel between Hinchinbrook Island and mainland Queensland, Australia, which resulted in the loss of 200,000 fish (50 tonnes). The origin of this outbreak is unclear because N. melleni has not been recorded from any wild host species in Australia and strict quarantine regulations exclude the possibility of its introduction on imported fish. We propose that N. melleni occurs naturally on wild populations of some teleost species in Australian waters and that the few surveys of wild fish conducted along the east coast have failed to report this species. The possibility that uncharacteristically low water temperatures led to the outbreak is discussed.
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              The capsalidae (Monogenea: Monopisthocotylea): a review of diversity, classification and phylogeny with a note about species complexes.

              The Capsalidae are monogeneans parasitizing 'skin', fins and gills of marine fishes. Some capsalids are pathogenic to cultivated fish and a few have caused epizootic events. It is a cosmopolitan family with broad host associations (elasmobranchs and teleosts, including sturgeons). Approximately 200 capsalid species are placed in nine subfamilies and 44-46 genera, some of which are well known (Benedenia, Capsala, Entobdella, Neobenedenia). Sturgeons host two capsalid species (Nitzschiinae) and 15 species in five genera are reliably reported from elasmobranchs. The combination of ancient (shark, ray, sturgeon) and modem (teleost) host fish lineages indicates that capsalid evolution is likely a blend of coevolution and host-switching, but a family phylogeny has been lacking due to deficient knowledge about homologies. The current phenetic subfamilial classification is discussed in detail using a preliminary phylogeny generated from large subunit ribosomal DNA sequence data from representatives of five subfamilies. Monophyly of the Capsalidae is supported by possession of accessory sclerites. Hypotheses are proposed for the possible radiation of capsalids. A suggestion that Neobenedenia melleni, a pathogenic species atypical due to its broad host-specificity (>100 host teleost species from >30 families in five orders), may be a complex of species is supported from genetic evidence. This may explain peculiarities in biology, taxonomy, host associations and geographic distribution of N. 'melleni' and has implications for fish health. Holistic studies using live and preserved larval and adult capsalid specimens and material for genetic analysis are emphasised to further determine identity, phylogeny and details of biology, especially for pathogenic species.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                inci
                Interciencia
                INCI
                ASOCIACIÓN INTERCIENCIA (Caracas )
                0378-1844
                July 2009
                : 34
                : 7
                : 507-513
                Affiliations
                [1 ] Universidad de Oriente Venezuela
                [2 ] Universidad de Oriente Venezuela
                [3 ] Universidad de Oriente Venezuela
                [4 ] Universidad de Oriente Venezuela
                Article
                S0378-18442009000700012
                3baaf63e-07e8-4754-b4e7-093838b75e68

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Venezuela

                Self URI (journal page): http://www.scielo.org.ve/scielo.php?script=sci_serial&pid=0378-1844&lng=en
                Categories
                ECOLOGY

                Ecology
                Monogenoidea,Parásitos,Peces,Venezuela
                Ecology
                Monogenoidea, Parásitos, Peces, Venezuela

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