Diversidad de las comunidades bentónicas en las regiones de reclutamiento de la merluza común Merluccius hubbsi Marini, 1933.

Published in Revista de Investigación y Desarrollo Pesquero

Giberto, D.A., Romero, R.V., Escolar, M., Machinandiarena, L. and Bremec, C.S.

Publication year 2015
DOI n/a
  • Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP), Paseo Victoria Ocampo Nº1, Escollera Norte, B7602HSA - Mar del Plata, Argentina
  • Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
  • Instituto de Investigaciones Marinas y Costeras (IIMyC), Universidad Nacional de Mar del Plata (UNMdP), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentia
  • Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires (UBA), Pabellón 2, Ciudad Universitaria, C1428EHA - Ciudad Autónoma de Buenos Aires, Argentina


IAI Program


IAI Project CRN3094


The environmental and biological traits of fishes recruitment and nursery areas play a key role in their survival. In that context, the aim of this work was to characterize the diversity of macrobenthic communities linked to young-of-the-year common hake in the San Jorge Gulf region (&ldquoPatagonian Shelf&rdquo, PS) and the Argentine-Uruguayan Common Fishing Zone (AUCFZ). Bycatch data gathered in research cruises performed by the Instituto Nacional de Investigación y Desarrollo Pesquero (INIDEP) (2005-2011) were used. 147 taxa in the PS and 165 in the AUCFZ were found, with predominance of crustaceans, mollusks and echinoderms. The total asymptotic richness estimates varied between 154-184 (PS) and 182-214 (AUCFZ). The PS displayed a lower species density than the AUCFZ and lesser richness of all values in the individuals considered. However, several of its benthic assemblages showed a larger presence of species, which results in an increase of the bottom complexity and the strengthening of shelter conditions for young-of-the-year specimens to face predation and, thus, in a higher survival level. Said hypothesis should be evaluated in the long term with studies aimed, specifically, at the benthic communities using the baseline generated by bycatch samplings.