Ecology of hake recruitment in the Northwest Spanish Iberian coast (ICES Subdi-vision VIIIc west)
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AuthorsÁlvarez, P. (Paula); Saborido, F.; Vergara, A.; Piñeiro-Álvarez, C.G. (Carmen Gloria); Rodríguez, J.M. (José María); García-García, A. (Alberto); Quintanilla-Hervás, J.M. (José María); Garcia-Seoane, E.
The aim of this study is to analyse the ecological processes of hake recruitment, from egg production to the post-larva phase, when it changes from pelagic to demersal hab-its and recruits definitively to the population. In Galicia, hake presents a protracted spawning season, which covers the whole year, showing higher spawning activity dur-ing the first half of the year, with a main peak of spawning between January and March, and secondary peaks in June-July and October-November. During winter and summer, surveys (considering top priority winter-survey) hake eggs and larvae were collected following an adaptive cluster sampling. Both, selection of sampling locations and sam-pling effort depended on the number of hake larvae previously collected during the same survey. Ichthyoplankton samples for quantitative analyses were carried out with a multiple opening/closing net MultiNet_MiDi hauled at 5 depth strata. Additionally, in order to get more larvae and post-larvae, in areas with high ...
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