Resumen del producto

Fish larval abundances were obtained from oblique zooplankton (surface to 200m) hauls conducted during four cruises covering the deep?water region of the Gulf of Mexico (south of 25& November 2010, July 2011, March 2013 and October 2015. Mean larval abundances were highest in November 2010 (624 larvae/1000m3) and lowest in October 2015 (112 larvae/1000m3), and intermediate during July 2011 and March 2013. During all cruises the highest larval abundances were observed within the Bay of Campeche and the lowest in the open water region of the central gulf. We will evaluate the relationship between specific mesoscale structures, larval abundance, and hydrographic characteristics. Oceanographic data obtained in?situ through CTD casts and remote sensing will be used to identify the location of fixed sampling stations relative to spatially varying mesoscale structures with contrasting hy drographic characteristics: the region of influence of the Loop Current (LC), anticyclonic gyres from LC, the semi?permanent cyclonic gyre of the western Bay of Campeche (BC) and the eastern BC, which is influenced by strong offshore transport. This study will provide a baseline for understanding the oceanographic processes related to spatial and temporal variation of ichthyoplankton abundances in the southern Gulf of Mexico.

Palabras clave: Fish larvae; Deep-water; Gulf of Mexico

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