Resumen del producto

¹ Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas

The California yellowtail Seriola dorsalis is a coastal pelagic species distributed in the Northeast Pacific from northern California, U.S.A. to Mazatlan, Sinaloa, Mexico, including the Gulf of California. It feeds mainly of small fish and cephalopods, reaching up to 150 cm fork length and up to 50 kg in weight. This species is captured with purse seine and trawl nets and with line and hook. It is highly prized in both commercial and sport fisheries and also is used in aquaculture in countries, such as Mexico where its sale is usually in fresh, so it is a species that contributes significantly to the economy throughout all its distribution range. Despite its high economic value, particularly in the Mexican Pacific and the Gulf of California, studies on its basic biology, such as age and individual growth parameters, are scarce. These data are the basis of stock assessment models and necessary for the sustainable use of resources. Therefore, this study shows preliminary results of age and individual growth of California yellowtail estimated by counting annual growth marks in sagittae otoliths. From January 2018 to March 2020, 411 organisms (165 males, 126 females and 120 not sexed) were sampled in Cabo San Lucas and La Paz, Baja California Sur. The fork length range for males and females was 43-125 and 36-121 cm, respectively. The length-weight relationship parameters indicated that growth of both males and females was not different from isometric growth. Seven age groups (3 - 9) were sampled, where 4 to 6 were the most abundant. In size-age data, three models of individual growth were adjusted (von Bertalanffy, Gompertz and Logistic), according to the Akaike information criterion values, von Bertalanffy model is the one that better describes individual growth of the species (L8 = 123.89, k = 0.14 and t0 = -0.81).

Palabras clave: Edad y crecimiento; pesca deportiva; Jurel

Para obtener una copia del documento contacta la personal de la biblioteca a través del correo bibliocicimar{a}ipn.mx