Effect of ENSO on the distribution and concentration of catches and reproductive activity of anchovy Engraulis ringens in northern Chile

Hernández-Santoro C.; Landaeta M.F.; Castillo Pizarro J.

Abstract

Anchovy makes up 90% of pelagic fishery catches in northern Chile. For the present work, anchovy (Engraulis ringens, Jenyns 1842) catches between 1997 and 2016 were analyzed to determine changes in distribution, concentration, and reproductive behavior before, during, and after ENSO events, using spatial indexes: gravity center (GC), inertia, coverage (CI), Gini index, and gonadosomatic index (GI). At the start of ENSO, anchovy catches increased and concentrated along the coast (rising Gini index), while CI decreased. During ENSO, Gini decreased, registering a southward displacement of the GC and smaller catches. In the long run, anchovy occupied lesser area (

Más información

Título según WOS: Effect of ENSO on the distribution and concentration of catches and reproductive activity of anchovy Engraulis ringens in northern Chile
Título según SCOPUS: Effect of ENSO on the distribution and concentration of catches and reproductive activity of anchovy Engraulis ringens in northern Chile
Título de la Revista: FISHERIES OCEANOGRAPHY
Volumen: 28
Número: 3
Editorial: Wiley
Fecha de publicación: 2018
Idioma: English
DOI:

10.1111/fog.12405

Notas: ISI, SCOPUS