Estudio Poblacional Del Recurso Anchoveta (Engraulis Ringens Jenyns 1842) (Clupeiformes, Engraulidae), Mediante Analisis De Adn

Temperature effects on the anchoveta Engraulis ringens egg development: do latitudinal differences occur?

“…Ferrada et al (2002) proposed that the open genetic flow between anchoveta populations along its latitudinal distribution allows the same genotype frequencies between embryos from Talcahuano (36°S) and Iquique (20°S) and they pointed out that anchoveta populations have to be considered as one in a panmictic stage. However, Q 10 data given by the present work clearly show different temperature optima for Talcahuano and Antofagasta populations and support the hypothesis that latitudinal differences do occur.…”

“…Three main fishery stocks have been identified: (i) off northern Peru (largest), (ii) off southern Peru-Northern Chile, and (iii) off Central Chile (smallest) (Castro 2001). However, these fishery stocks should not be considered as separate biological populations since gene flow occurs between all of them (Ferrada et al 2002).…”

Variabilidad ambiental y recursos pesqueros en el Pacifico suroriental: estado de la investigacion y desafios para el manejo pesquero

“…Debido a los rangos distribucionales de las especies de sardina y de los stocks de anchoveta (Ferrada et al, 2002), se desarrollan pesquerías independientes en la zona norte del país (Arica-Antofagasta) constituida por anchoveta y sardina española, y en la zona centro-sur (Valparaíso-Valdivia) por sardina común y anchoveta (Serra, 1978;Arrizaga, 1981). Estas especies habitan a lo largo de la costa hasta las 30 mn, presentando una componente estacional en el crecimiento (Feltrim & Ernst, 2010), reclutamiento (Cubillos & Arcos, 2002) y pesca (Feltrim, 2009), asociada a la zona de influencia de surgencia costera y mayor productividad primaria durante la primavera-verano (Arcos et al, 1987;Yuras et al, 2005).…”

Genetic variability in jack mackerel Trachurus murphyi Nichols: New SSRs loci and application

“…Canales-Aguirre et al 2010c) and especially in migratory pelagic species of the Humboldt Current System (e.g. Galleguillos et al 1997;Ferrada et al 2002). Ward (2000) reports that mixing rates of 1% result in genetic homogeneity and a failure to identify stock structure, even if it exists.…”