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Title: Mesoscale distribution of fish larvae in relation to an upwelling filament off Northwest Africa
Authors: Rodríguez, J. M.
Hernández-León, S. 
Barton, E. D.
UNESCO Clasification: 251001 Oceanografía biológica
Keywords: Uppwelling filament
Canary islands
Fish eggs
Issue Date: 1999
Publisher: 0967-0637
Journal: Deep-Sea Research Part I: Oceanographic Research Papers 
Abstract: Fish eggs and larvae were studied in relation to an upwelling filament off Northwest Africa, near the Canary Islands, during August 1993. The filament was entrained around a quasi-permanent cyclonic eddy of diameter 100 km. The sampled ichthyoplanktonic community was dominated by neritic larvae, 94.2% of which were captured in the oceanic area. Horizontal distributions of neritic and oceanic larvae were strongly influenced by the oceanographic features characteristic of the coastal margin. Neritic larvae were associated with upwelling and filament structures, while oceanic larvae were strongly excluded from these features. The results suggest that coastal upwelling and filaments are mechanisms of transport for neritic ichthyoplankton into oceanic waters, that sardine larvae are good tracers of offshore movements of upwelled waters, and that the cyclonic eddy functions as a larval nursery ground for neritic fish species.
ISSN: 0967-0637
DOI: 10.1016/S0967-0637(99)00036-9
Source: Deep-Sea Research Part I: Oceanographic Research Papers [ISSN 0967-0637], v. 46, p. 1969-1984
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