English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/131912
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Life strategies of cephalopod paralarvae in a coastal upwelling system (NW Iberian Peninsula): Insights from zooplankton community and spatio-temporal analyses

AuthorsRoura, Álvaro ; Álvarez-Salgado, Xosé Antón ; González, Ángel F. ; Gregori, María ; Rosón, Gabriel; Otero, Jaime ; Guerra, Ángel
KeywordsCephalopod paralarvae
Early life strategies
NW Iberian upwelling
Trophic ecology
Vertical behavior
Zooplankton communities
Issue Date2016
PublisherJohn Wiley & Sons
CitationFisheries Oceanography 25(3): 241-258 (2016)
AbstractThe early life stages of cephalopods - octopods, squids, sepiolids and ommastrephids -, are uncommon in zooplankton samples and little is known about their life strategies. Accordingly, cephalopod paralarvae were examined in the upwelling ecosystem of the Ría de Vigo (NW Spain) at night from 2008 to 2010. Multivariate analyses and generalized linear models (GLMs) were used to explore relationships between cephalopod paralarvae and the zooplankton communities that they inhabited in 2008. In addition, the foraging strategy and prey preferences of Octopus vulgaris paralarvae within these communities were determined. Multivariate and GLM results showed a strong association of cephalopod paralarvae with coastal and frontal zooplankton communities. Octopus paralarvae were shown to be specialist predators with a strong preference for decapod zoeae in each of the communities examined. Using the three years of sampling, GLM analyses of paralarval spatio-temporal variations in relation with the upwelling strength showed a positive relationship with upwelling intensity for O. vulgaris and sepiolids, as well as contrasting temporal, horizontal and vertical distributions for the different paralarvae analysed. Under strong upwelling events, Octopus paralarvae were more abundant in surface waters, whereas the abundance of loliginids and sepiolids was higher in the water column. This vertical behaviour in conjunction with the physical conditions of the Western Iberian Upwelling ecosystem suggests the coexistence of two different life strategies: a coastal strategy displayed by loliginid and sepiolid paralarvae that are retained over the shelf, and an oceanic strategy displayed by O. vulgaris paralarvae that are dispersed far from the shelf
Description18 páginas, 6 figuras, 6 tablas
Publisher version (URL)http://dx.doi.org/10.1111/fog.12151
Appears in Collections:(IIM) Artículos
Files in This Item:
File Description SizeFormat 
Life_strategies_cephalopod_paralarvae.pdf1,52 MBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.