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| Format: | Artículo científico |
| Language: | es |
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Universidad de Valparaíso
2015
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| Online Access: | https://www.redalyc.org/articulo.oa?id=47943353013 |
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Table of Contents:
- Efectos de un remolino de mesoescala sobre la distribución de larvas de peces mesopelágicas en el Golfo de California Fernando Contreras-Catala Laura Sánchez-Velasco Emilio Beier Victor M. Godínez Ciencias de la Tierra Three cyclonic eddy Vinciguerria lucetia dimensional distribution Diogenichthys laternatus We examined the effect of a mesoscale cyclonic eddy on the three-dimensional distribution of Vinciguerria lucetia and Diogenichthys laternatus in southern Gulf of California during July 2010. CTD data and zooplankton samples collected with a closing-opening net (505 μm), were obtained on 2 transects across the eddy, and on a transect outside of the mesoscale structure. In the later the thermocline depth was at ~40 m where larvae V. lucetia dominated. Opposite to V. lucetia distribution, D. laternatus larvae was the dominant species in the deepest strata. In the area influenced by the cyclonic eddy (~350 m depth and ~60 km diameter), the thermocline was sunk from ~25 m (eddy edge) to ~50 m depth (eddy center). The isotherms below the thermocline formed a dome from ~350 m to ~100 m depth in the eddy center. This upwelling coincided with an increase of D. laternatus larvae in the water column. Compared with the transect outside of the cyclonic eddy, the shoaling of the isotherms inside the eddy produced not only an increase of D. laternatus larvae, also decreased the V. lucetia abundance. These variations in larval distribution of both mesopelagic species are closely correlated with the mesoscale cyclonic eddy. 2015 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47943353013 es http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.3 Vol.50