Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae

Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae

16 pages, 6 figures, 4 tables, supplementary data https://doi.org/10.1016/j.dsr.2020.103404

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Bibliographic Details
Main Authors: Mir-Arguimbau, Joan, Navarro, Joan, Balcells-Surroca, Marc, Martín, Paloma, Sabatés, Ana
Other Authors: Generalitat de Catalunya
Format: artículo biblioteca
Published: Elsevier 2020-12
Subjects:Stomach contents, Diet composition, Stable isotopes, Trophic position, NW Mediterranean,
Online Access:http://hdl.handle.net/10261/220704
http://dx.doi.org/10.13039/501100002809
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100011033
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spelling dig-icm-es-10261-2207042022-05-12T07:49:12Z Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae Mir-Arguimbau, Joan Navarro, Joan Balcells-Surroca, Marc Martín, Paloma Sabatés, Ana Generalitat de Catalunya European Commission Ministerio de Economía y Competitividad (España) Agencia Estatal de Investigación (España) Stomach contents Diet composition Stable isotopes Trophic position NW Mediterranean 16 pages, 6 figures, 4 tables, supplementary data https://doi.org/10.1016/j.dsr.2020.103404 We investigated the feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean living in two habitats, the shelf break and the continental slope, throughout the year, by combining two methodological approaches, stomach content characterization and stable isotope analyses. Stomach content indicated that blue whiting mainly fed on Myctophidae fish, decapods and euphausids. Differences in diet were observed between areas and throughout the year, with a higher proportion of Myctophidae in individuals living over the shelf break (attaining values ~ 70% weight) than over the slope (attaining values ~ 50% weight). In both habitats Myctophidae, a highly energetic prey, were mainly consumed in spring and summer, which might allow the species to recover energy reserves after the reproductive period and supply the energetic demands of the fast growth season. MixSIAR models, which provide estimates of the relative contribution of each prey to the diet of the consumer by combining stable isotope values of the consumer with those of their potential prey, also indicated that Myctophidae were the main prey in the assimilated diet over the entire year, in both areas. The trophic niche, measured by isotope analyses, suggested segregation between individuals of the shelf break (mainly immatures) and the slope (mainly adults), which would reduce the intraspecific competition. The seasonal and spatial differences observed in the feeding ecology of the Mediterranean blue whiting are related to the energetic requirements of the species throughout the year and with changes in the spatial distribution of the different ontogenetic phases J.M-A. was supported by a predoctoral fellowship of the FI program of the Secretaria d’Universitats i Recerca de la Generalitat de Catalunya, Spain, and Fons Social Europeu (FSE) [2019FI_B2 00183]. JN was funded by the Spanish National Program Ramón y Cajal (RYC-2015-17809), Ministry of Science and Innovation, Spain. This work was supported by the Spanish Ministry of Economy and Competitiveness [CTM2015-68543-R], Spain With the funding support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI) 2020-10-05T06:30:04Z 2020-10-05T06:30:04Z 2020-12 2020-10-05T06:30:05Z artículo http://purl.org/coar/resource_type/c_6501 issn: 0967-0637 Deep Sea Research - Part I - Oceanographic Research Papers 166: 103404 (2020) CEX2019-000928-S http://hdl.handle.net/10261/220704 10.1016/j.dsr.2020.103404 http://dx.doi.org/10.13039/501100002809 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2015-68543-R Postprint https://doi.org/10.1016/j.dsr.2020.103404 Sí open Elsevier
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
topic Stomach contents
Diet composition
Stable isotopes
Trophic position
NW Mediterranean
Stomach contents
Diet composition
Stable isotopes
Trophic position
NW Mediterranean
spellingShingle Stomach contents
Diet composition
Stable isotopes
Trophic position
NW Mediterranean
Stomach contents
Diet composition
Stable isotopes
Trophic position
NW Mediterranean
Mir-Arguimbau, Joan
Navarro, Joan
Balcells-Surroca, Marc
Martín, Paloma
Sabatés, Ana
Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae
description 16 pages, 6 figures, 4 tables, supplementary data https://doi.org/10.1016/j.dsr.2020.103404
author2 Generalitat de Catalunya
author_facet Generalitat de Catalunya
Mir-Arguimbau, Joan
Navarro, Joan
Balcells-Surroca, Marc
Martín, Paloma
Sabatés, Ana
format artículo
topic_facet Stomach contents
Diet composition
Stable isotopes
Trophic position
NW Mediterranean
author Mir-Arguimbau, Joan
Navarro, Joan
Balcells-Surroca, Marc
Martín, Paloma
Sabatés, Ana
author_sort Mir-Arguimbau, Joan
title Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae
title_short Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae
title_full Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae
title_fullStr Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae
title_full_unstemmed Feeding ecology of blue whiting (Micromesistius poutassou) in the NW Mediterranean: The important role of Myctophidae
title_sort feeding ecology of blue whiting (micromesistius poutassou) in the nw mediterranean: the important role of myctophidae
publisher Elsevier
publishDate 2020-12
url http://hdl.handle.net/10261/220704
http://dx.doi.org/10.13039/501100002809
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100011033
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