Hipéridos (Crustacea: Amphipoda) en el sector norte del Pacífico oriental tropical colombiano.

Hyperiids (Crustacea: Amphipoda) along the northern margin of the eastern tropical Pacific of Colombia.

HYPERIIDAE; CRUSTACEA; BIODIVERSITY; ZOOPLANKTON

In order to analyze the composition, abundance, and diversity of hyperiid amphipods at Punta Cruces and Cabo Marzo, on the northern Pacific coast of Colombia (eastern tropical Pacific), a sampling campaign was carried out in January 2008 that covered a nine-station sampling grid. Twenty species were found, of which Lestrigonus bengalensis and Hyperioides sibaginis were the most abundant (91% of the community at Cabo Marzo and 95% at Punta Cruces). Although the abundance and diversity were highly variable at both sites, they did not differ significantly (Mann Whitney; p > 0.05). Likewise, the similarity in terms of composition and abundance between the hyperiid communities at Punta Cruces and Cabo Marzo was 64.6%. This research provides new information regarding a scarcely studied component of the zooplankton in the eastern tropical Pacific and increases the number of hyperiid species reported for the Pacific Ocean of Colombia. [ABSTRACT FROM AUTHOR]

Con el objetivo de analizar la composición, abundancia y diversidad de la comunidad de anfípodos hipéridos en las localidades de Punta Cruces y Cabo Marzo, costa norte del Pacífico colombiano (Pacífico oriental tropical), se realizó una campaña de muestreo en enero de 2008 siguiendo una malla de nueve estaciones. Se encontró un total de 20 especies, siendo Lestrigonus bengalensis e Hyperioides sibaginis las más abundantes, representando el 91% de la comunidad en Cabo Marzo y el 95% de la comunidad en Punta Cruces. La abundancia y la diversidad en las dos localidades fueron muy variables, y no presentaron diferencias significativas (Mann Whitney; p > 0,05). Así mismo, se estableció que la similitud en términos de la composición y la abundancia entre las comunidades de hipéridos de Punta Cruces y Cabo Marzo fue de un 64,6%. Este trabajo proporciona información inédita sobre un componente poco estudiado del zooplancton en el Pacífico oriental tropical, incrementando el número de especies registradas para el Pacífico colombiano. [ABSTRACT FROM AUTHOR]

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