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Resumen del producto

Daudén-Bengoa, G., S.P.A., Jiménez-Rosenberg, L.d.P., Echeverri-García, M.A., Fernández-Álamo, U., Ordoñez-López & S.Z., Herzka (2023). Distribution and densities of fish larvae species with contrasting life histories as a function of oceanographic variables in the deep-water region of the southern Gulf of Mexico. PLoS ONE. 18(2): 25. DOI: 10.1371/journal.pone.0280422.

Distribution and densities of fish larvae species with contrasting life histories as a function of oceanographic variables in the deep-water region of the southern Gulf of Mexico

Gonzalo Daudén-Bengoa 1, Sylvia Patricia Adelheid Jiménez-Rosenberg 2, Laura del Pilar Echeverri-García 1, María Ana Fernández-Álamo 3, Uriel Ordoñez-López 4 y Sharon Z. Herzka 1

1 Departamento de Oceanografía Biológica, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Ensenada, Baja California, México
2 Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas (IPN-CICIMAR), La Paz, Baja California Sur, México
3 Laboratorio de Invertebrados, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México, México
4 Instituto Politécnico Nacional, Centro de Investigación y Estudios Avanzados, Unidad Mérida, Mérida, Yucatán, México

We describe the larval occurrence and density of six fish species with contrasting life historiesand examine their relationships with oceanographic variables during two seasons in thedeep-water region (> 1000 m) of the southern Gulf of Mexico based on 12 cruises (2011–2018). Given that Caranx crysos adults are neritic, larval presence close to the continentalshelf indicates offshore cross-shelf transport to oceanic waters, which likely leads to mortality.Generalized additive models indicated that C. crysos density was not related with oceanographicvariables, while Auxis spp. (with neritic and oceanic adults) was related to windspeed, sea surface temperature, sea surface height, and surface chlorophyll a. The mesopelagicBenthosema suborbitale, Notolychnus valdiviae and Bregmaceros atlanticus weremore abundant and broadly distributed, and higher density was found in conditions indicativeof higher nutrient availability and productivity, suggesting greater feeding success andsurvival. The distribution of the epi- and mesopelagic Cubiceps pauciradiatus extendedthrough the southern Gulf of Mexico, and was related to wind speed, sea surface temperature,stratification and chlorophyll a. Our results suggest that the density of the neritic speciesin oceanic waters could be mediated by regional cross-shelf transport, while for oceanicspecies is linked with productivity.

Palabras clave: larvae; Seasons; oceanography; salinity; spawning; Wind; Marine fish; Wind power

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