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Title: Regional patterns of delta C-13 and delta N-15 for European common cuttlefish (Sepia officinalis) throughout the Northeast Atlantic Ocean and Mediterranean Sea
Authors: David Wells, R. J.; Rooker, Jay R.; Addis, Piero; Arrizabalaga, Haritz; Baptista, Miguel; Bearzi, Giovanni; Fraile, Igaratza; Lacoue-Labarthe, Thomas; Meese, Emily N.; Megalofonou, Persefoni; Rosa, Rui; Sobrino, Ignacio; Sykes, Antonio V. and Villanueva, Roger
Abstract: Stable isotope compositions of carbon and nitrogen (expressed as delta C-13 and delta N-15) from the European common cuttlefish (Sepia officinalis) were measured in order to evaluate the utility of using these natural tracers throughout the Northeast Atlantic Ocean and Mediterranean Sea (NEAO-MS). Mantle tissue was obtained from S. officinalis collected from 11 sampling locations spanning a wide geographical coverage in the NEAO-MS. Significant differences of both delta C-13 and delta N-15 values were found among S. officinalis samples relative to sampling location. delta C-13 values did not show any discernable spatial trends; however, a distinct pattern of lower delta N-15 values in the Mediterranean Sea relative to the NEAO existed. Mean delta N-15 values of S. officinalis in the Mediterranean Sea averaged 2.5 parts per thousand low than conspecifics collected in the NEAO and showed a decreasing eastward trend within the Mediterranean Sea with the lowest values in the most eastern sampling locations. Results sugge delta N-15 may serve as a useful natural tracer for studies on the population structure of S. officinalis as, well as other marine organisms throughout the NEAO-MS.
Keywords: stable isotopes; delta C-13 and delta N-15; cuttlefish; cephalopod; natural tracers; STABLE-ISOTOPE; ENGLISH-CHANNEL; CARBON; MARINE; CEPHALOPODA; MOVEMENTS; MATTER
Issue Date: 2021
Publisher: ROYAL SOC
Type: Article
DOI: 10.1098/rsos.210345
ISSN: 2054-5703
Funder: Texas AM University
McDaniel Charitable Foundation
Fundacao para a Ciencia e a TecnologiaPortuguese Foundation for Science and TechnologyEuropean Commission [SFRH/BPD/36100/2007]
Spanish Ministry of Science, Innovation and Universities (MCIU/AEI/FEDER, EU) [RTI2018-097908-B-I00]
`Severo Ochoa Center of Excellence' accreditation of the Spanish Research Agency [Agencia Espanola de Investigacion (AEI)] [CEX2019-000928-S]
Appears in Publication types:Artículos científicos

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