IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Interannual variability in a copepod time-series in the spawning and nursery area of the patagonian hake. Implications for fish recruitmen
Autor/es:
TEMPERONI, B.; MARTOS, P.; CEPEDA, G.; SANTOS, B.; VIÑAS, M. D,; MARRARI, M.
Lugar:
Bergen
Reunión:
Simposio; 6th Zooplankton Production Symposium; 2016
Institución organizadora:
ICES
Resumen:
Due to their dominance in the zooplankton community and their Relationship with higher trophic levels in pelagic foodwebs, copepods are key components of marine ecosystems. Their spatial and temporal variability influence the survival of early stages of fish larvae that rely on them as their main prey. This work aims to explore how environmental variability may influence the copepod community , as one of the possible factors affecting hake recruitment success. Research focused on the main spawning and nursery area of the patagonian population of Argentine hake. The data set includes 10 years of zooplankton samples, sea surface temperature and chlorophyll concentration, as well as data on the abundance of year-1 hake juveniles, as an indicator of recruitment of the species. Copepod community was analysed by means of ZooImage automated method. Small copepods, mainly represented by Drepanopus forcipatus and Ctenocalanus vanus, were overwhelmingly abundant during the study period. Calanoides carinatus dominated the large category. First results concerning interannual variability of abundance, biomassand size structure of the copepod community in relationship with SST.