English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/103029
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 1 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)

Drivers of body size changes in a pollachius pollachius stock in NE atlantic coastal waters

Autor Alonso-Fernández, Alexandre ; Otero, Jaime ; Villegas-Ríos, David ; Bañón, Rafael
Palabras clave Generalized additive mixed model
Size-based indicators
Environmental drivers
Pollachius pollachius
Fecha de publicación 2014
EditorInter Research
Citación Marine Ecology Progress Series 511: 223-235 (2014)
ResumenFish body size is a key life history trait that influences population dynamics. Individual growth and size distribution are generally affected by both intrinsic and extrinsic factors. However, the drivers of body size changes are still poorly understood. The NW Iberian Peninsula is one of the most important fishing regions in Europe, where there is a special emphasis on artisanal fisheries. Despite the large contribution of small-scale fisheries to local communities, there is a lack of knowledge of the biotic and abiotic factors influencing the performance of coastal key species. In this study, we analyzed spatio-temporal changes in body size of Pollachius pollachius at the population level in response to a set of intrinsic and extrinsic factors. Generalized additive mixed-effects models were fit to a data set of ~11000 records of individual body size of catch sampled by onboard observers during the last 13 yr in a complex multi-gear artisanal fishing fleet. Pollack body size showed strong spatio-temporal patterns, with an inshore–offshore geographic gradient where smaller fish were associated with shallower waters. Moreover, body size displayed a seasonal cycle, with larger individuals occurring mainly in winter months. This seasonality matches the annual reproductive cycle of the species. In addition, body size was affected by the interaction between population density and the temperature experienced by fish the year preceding the catch, with smaller individuals occurring at elevated temperatures and higher densities
Descripción 13 páginas, 5 figuras, 1 tabla
Versión del editorhttp://dx.doi.org/10.3354/meps10939
URI http://hdl.handle.net/10261/103029
Aparece en las colecciones: (IIM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Alonso-Fernandez_drivers_body.pdf469,09 kBAdobe PDFVista previa
figures_drivers_body.pdf1,3 MBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.