LAUSR

espanolResumen: Se analizo la composicion y proporcion de especies en las capturas de la pesqueria industrial y artesanal que opera con red de cerco de la zona norte de Chile. En este estudio se utilizo informacion biologico-pesquera obtenida a bordo de embarcaciones pesqueras entre los anos 2004 y 2012, a traves del Programa de Seguimiento de Pesqueria Pelagicas de la Zona Norte de Chile. Se analizaron 9.639 lances de pesca. Se determinaron cuatro perfiles se captura que explicaron un 34,27% de la varianza. Los perfiles estuvieron compuestos principalmente por anchoveta Engraulis ringens, jurel Trachurus murphyi y caballa Scomber japonicus, con un alto porcentaje de anchoveta. Solo un perfil presento especies que componen la fauna acompanante. Se examino la influencia del tipo de flota, la variabilidad temporal (ano, mes y trimestre de recalada), el periodo del dia, la posicion geografica, la temperatura superficial del lance, la zona de pesca y la distancia a la costa en la composicion de los perfiles de captura utilizando modelos lineales generalizados. Las variables con mayor influencia estadistica sobre los perfiles de captura fueron el trimestre de recalada, el periodo del dia, la zona, la distancia a la costa y la temperatura. Se observo una baja proporcion de especies no objetivo, influenciadas principalmente por la zona de pesca y el periodo del dia. EnglishAbstract: The composition and species proportion of catch were analyzed in the industrial and artisanal purse seine fishery occurred in the north of Chile. Biological and fishing information obtained on board fishing vessels between 2004 and 2012 through the Monitoring Program of Pelagic Fisheries in North Zone of Chile were used in this study. 9639 fishing hauls were analyzed. Four catch profiles explained the 34.27% of variance. The catch profiles were mainly composed by anchovy Engraulis ringens, jack mackerel Trachurus murphyi and mackerel Scomber japonicus. Anchovy was the dominant species. Only one catch profile grouped non-target species. Using GLM, the influence of type of fleet, temporal variability (year, month and trimester of arrival), day period, geographic position, sea surface temperature, fishing zone and coast distance in the catch profiles composition were analyzed. The trimester of arrival, day period, fishing zone, coast distance and sea surface temperature were the variables with greater statistical influence on catch profiles. A low proportion of non-target species was observed, influenced mainly by the fishing zone and the period of the day.