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Distribution of Hippoidea (Decapoda, Anomura) larvae off Veracruz, southern Gulf of Mexico: inferences about their migration route

In: Crustaceana
Authors:
Laura Sanvicente-AñorveUniversidad Nacional Autónoma de México, Instituto de Ciencias del Mar y Limnología, Circuito Exterior S/N, Ciudad Universitaria, Mexico City, Mexico

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Santiago Aréstegui-Paz RubioUniversidad Nacional Autónoma de México, Facultad de Ciencias, Circuito Exterior S/N, Ciudad Universitaria, Mexico City, Mexico

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Elia Lemus-SantanaUniversidad Nacional Autónoma de México, Facultad de Ciencias, Circuito Exterior S/N, Ciudad Universitaria, Mexico City, Mexico

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Eugenia Allende-ArandíaUniversidad Nacional Autónoma de México, Unidad Académica de Yucatán, Instituto de Ingeniería, Puerto de Abrigo S/N, Sisal, Yucatán, Mexico

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Jorge Zavala-HidalgoUniversidad Nacional Autónoma de México, Centro de Ciencias de la Atmósfera, Circuito Exterior S/N, Ciudad Universitaria, Mexico City, Mexico

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Abstract

The distribution and abundance of hippoid zoeal stages offshore Veracruz, southern Gulf of Mexico, and the migration routes of these larvae in the western Atlantic, were analysed. Samples were collected with a Bongo net and larval dispersal was analysed applying the HYCOM hydrodynamical model; particles (virtual larvae) originating from 35 sites were tracked for 77 days. Larvae of Albunea paretii Guérin-Méneville, 1853 were the most abundant, and dispersal simulations indicated that older larvae occurring off Veracruz might originate from Texas. However, a substantial proportion of self-recruitment (7.8%) can occur, mainly due to the seasonal changes in direction of currents over the shelf as well as the high variability in weather conditions. Results also suggest that several generations of A. paretii are needed for the species to reach Veracruz from South America. A hypothetical model regarding the migration routes of A. paretii larvae in the western Atlantic is proposed.

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