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      New records of warm-temperate water fishes in central Patagonian coastal waters (Southwestern South Atlantic Ocean) : New records of warm-temperate water fishes

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      Journal of Applied Ichthyology
      Wiley

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          Distribution, environment and biology of batoid fishes off Argentina, Uruguay and Brazil. A review

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            Distribución de crustáceos decápodos y estomatópodos del golfo San Jorge, Argentina

            El golfo San Jorge es una amplia entrada de mar en el océano Atlántico sudoccidental que se extiende entre los 45º y 47ºS a los 64º40’W. Se desarrollan aquí pesquerías importantes como la de merluza común, langostino, centolla, etc., siendo también zona de cría de éstas y otras especies de interés comercial. El objetivo de este trabajo ha sido reconocer las especies de estos crustáceos que habitan el golfo y su distribución en el mismo. Las muestras se han obtenido de los buques pesqueros costeros, fresqueros, de buques congeladores tangoneros y de muestreos en las costas, en intermareal y sublitoral, a partir de 1997. Se han registrado 27 especies de decápodos y 2 especies de estomatópodos en las aguas del golfo. Diez especies son típicas de aguas templado-cálidas (provincia argentina) y siete de ellas presentan el límite sur de su distribución en el golfo. Dieciséis especies son anfioceánicas, típicamente magallánicas y varias se distribuyen hasta las costas bonaerenses y aún Brasil. Se señala la presencia de Carcinus maenas, especie invasora con poblaciones recientemente instaladas en el área. Cinco especies ocupan el intermareal y submareal superior, asociados a sustratos duros y nueve especies se extienden en el submareal hasta los 30-40 m de profundidad, dependiendo de la existencia del sustrato apropiado. Otras ocho especies se extienden entre el submareal y las áreas de mayor profundidad del golfo. Los animales se distribuyen principalmente de acuerdo a los tipos de fondo existentes
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              Community ecology of the metazoan parasites of Atlantic Moonfish, Selene setapinnis (Osteichthyes: Carangidae) from the coastal zone of the state of Rio de Janeiro, Brazil

              Eighty-nine specimens of Selene setapinnis (Mitchill, 1815) collected from the coastal zone of the State of Rio de Janeiro (21-23ºS, 41-45ºW and 23º05'S, 44º30'W), Brazil, from August 2001 to May 2002, were necropsied to study their metazoan parasites. Eighty-one (91%) specimens of S. setapinnis were parasitized by one or more metazoan species. Twenty-one species of parasites were collected: 8 digeneans, 3 monogeneans, 2 cestodes, 5 nematodes, and 3 copepods. The endoparasites (digeneans, cestodes, and nematodes) were 74.1% of total number of parasite specimens collected. The monogenean Pseudomazocraes selene (Hargis, 1957) was the most dominant species with the highest prevalence in the parasite community of S. setapinnis. The metazoan parasites of this host species showed the typical aggregated pattern of distribution. Only one parasite species (Acanthocolpoides pauloi Travassos, Freitas & Buhrnheim, 1955) showed positive correlation between the host total length and parasite abundance in S. setapinnis. Caligus robustus Bassett-Smith, 1898, P. selene, and Terranova sp. demonstrated positive correlation between the host total length and prevalence. Larvae of Terranova sp. showed influence of the host sex on its prevalence. A pair of ectoparasite species, P. selene-C. robustus, exhibited positive covariation between their abundances. Two pairs of endoparasite species, L. microstomum-P. merus and A. pauloi-P. merus showed significant covariation among their abundances; and the pair Terranova sp.-Raphidascaris sp. had positive co-ocorrence and covariation in the infracommunities of S. setapinnis. Like the parasite communities of the other carangid fishes from Rio de Janeiro, the parasite community of S. setapinnis is apparently only a slightly ordered species complex, characterized by dominance of endoparasite species.
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                Author and article information

                Journal
                Journal of Applied Ichthyology
                Wiley
                01758659
                June 2011
                June 2011
                November 20 2010
                : 27
                : 3
                : 832-839
                Article
                10.1111/j.1439-0426.2010.01594.x
                cbf61003-e543-44f9-a5ed-9b9d8d77c628
                © 2010

                http://doi.wiley.com/10.1002/tdm_license_1

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