Patrón temporal en la composición específica de los desembarcos de la pesquería de arrastre demersal del Golfo San Matías

Abstract

The specific composition in landed catches of the trawl fleet that operates at San Matías Gulf was assessed between 2002 and 2006. Using a hierarchical clustering analysis, based on percentage composition of landings, three fishing seasons were identified. The first of them was extended during warm months (October-April)and the common hake Merluccius hubbsi was the dominant species in the catches. In the second season (May-July), landings of other demersal species were similar in percentage to those of hake. Finally, during the third fishing season (August- September), the silver warehou Seriolella porosa became the target species reaching the largest percentage on the total landed catches.