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      La comunidad de copépodos (Crustacea) en los giros a mesoescala en el occidente del Golfo de México (julio, 1995)

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          Abstract

          Se estudió la comunidad de copépodos pelágicos en la zona oceánica frente Tamaulipas, Mexico durante junio-julio de 1995. En este periodo se detectaron dos giros a mesoescala, uno ciclónico y el otro anticiclónico; su influencia se relacionó a zonas distintas del área de estudio. Se identificaron 106 especies de copépodos; su densidad, diversidad y riqueza de especies varió entre las áreas afectadas por el ciclón y el anticiclón. La densidad general fue similar en los dos sistemas, pero se encontró mayor densidad en el núcleo del ciclón que en el del anticiclón. La diversidad y el número de especies fue mayor en el ciclón, un sistema más productivo. Los anticiclones son sistemas oceánicos, oligotróficos, con aguas del Mar Caribe. La comunidad de copépodos en este giro, dominada por algunas de las más abundantes especies caribeñas, y con una diversidad relativamente menor, tiene más afinidad con las condiciones anticiclónicas. La fauna del ciclón, formada con aguas comunes del Golfo, mostró mayor diversidad y riqueza de especies así como una afinidad cualitativa mayor con la fauna propia del Golfo. El ámbito de distribución de varias especies se extiende en este estudio; para otras, representa el primer reporte para el Golfo de México.

          Translated abstract

          The pelagic copepod community of the oceanic area off the Mexican state of Tamaulipas was surveyed in June-July 1995. During the period and area surveyed, two mesoscale gyres, a cyclone and an anticyclone, were detected. The influence of each was related to a particular area. A total of 106 copepod species was determined. Copepod density, diversity, and species richness differed between the areas affected by the cyclone and the anticyclone. The overall density in the two areas was similar, but copepods at the cyclone nucleus were slightly denser than in the anticyclonic nucleus. Diversity and species richness were higher at the relatively more productive cyclone area. Anticyclones are oceanic, oligotrophic systems with a strong Caribbean influence, and the local copepod community structure, dominated by some of the most abundant species in the Caribbean, and with relatively lower diversity and species richness, seemed to agree with the anticyclone features. The copepod fauna of the cyclone, mainly built up by common Gulf water, showed a higher diversity and species richness, and a higher affinity with the fauna of the Gulf. The distributional range of several species is extended in this survey and some are reported herein for the first time in the Gulf of Mexico.

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          Most cited references27

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          Nutrients, plankton, and productivity in a warm-core ring in the western Gulf of Mexico

          D. Biggs (1992)
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            Collision of a loop current anticyclonic ring against the continental shelf slope of the western Gulf of Mexico

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              The distribution of calanoid copepods off the Southeastern United States between Cape Hatteras and southern Florida

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbt
                Revista de Biología Tropical
                Rev. biol. trop
                Universidad de Costa Rica (San José )
                0034-7744
                March 2000
                : 48
                : 1
                : 169-179
                Affiliations
                [1 ] Universidad Autónoma de Tamaulipas Mexico
                [2 ] Colegio de la Frontera Sur-Chetumal Mexico
                Article
                S0034-77442000000100020
                e919f3e0-5e27-4431-b0ae-3f70fe1d4caa

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

                History
                Product

                SciELO Costa Rica

                Self URI (journal page): http://www.scielo.sa.cr/scielo.php?script=sci_serial&pid=0034-7744&lng=en
                Categories
                Biodiversity Conservation
                Biology

                General life sciences,Animal science & Zoology
                marine zooplankton,mesoscale eddies,pelagic copepods

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