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Rooker JR, Wells RJD, Addis P, Arrizabalaga H, Baptista M, Bearzi G, Dance MA, Fraile I, Lacoue-Labarthe T, Lee JM, Megalofonou P, Rosa R, Sobrino I, Sykes AV, Villanueva R. Natural geochemical markers reveal environmental history and population connectivity of common cuttlefish in the Atlantic Ocean and Mediterranean Sea. J R Soc Interface 2020. [PMCID: PMC7423417 DOI: 10.1098/rsif.2020.0309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Natural markers (δ13C and δ18O stable isotopes) in the cuttlebones of the European common cuttlefish (Sepia officinalis) were determined for individuals collected across a substantial portion of their range in the Northeast Atlantic Ocean (NEAO) and Mediterranean Sea. Cuttlebone δ13C and δ18O were quantified for core and edge material to characterize geochemical signatures associated with early (juvenile) and recent (sub-adult/adult) life-history periods, respectively. Regional shifts in cuttlebone δ13C and δ18O values were detected across the 12 sites investigated. Individuals collected from sites in the NEAO displayed more enriched δ13C and δ18O values relative to sites in the Mediterranean Sea, with the latter also showing salient differences in both markers among western, central and eastern collection areas. Classification success based on cuttlebone δ13C and δ18O values to four geographical regions (NEAO, western, central and eastern Mediterranean Sea) was relatively high, suggesting that environmental conditions in each region were distinct and produced area-specific geochemical signatures on the cuttlebones of S. officinalis. A modified δ13C and δ18O baseline was developed from sites proximal to the Strait of Gibraltar in both the NEAO and Mediterranean Sea to assess potential mixing through this corridor. Nearly, all (95%) of δ13C and δ18O signatures of S. officinalis collected in the area of the NEAO closest to the Strait of Gibraltar (Gulf of Cadiz) matched the signatures of specimens collected in the western Mediterranean, signifying potential movement and mixing of individuals through this passageway. This study extends the current application of these geochemical markers for assessing the natal origin and population connectivity of this species and potentially other taxa that inhabit this geographical area.
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Affiliation(s)
- Jay R. Rooker
- Department of Marine Biology, Texas A&M University, 1001 Texas Clipper Road, Galveston, TX 77553, USA
| | - R. J. David Wells
- Department of Marine Biology, Texas A&M University, 1001 Texas Clipper Road, Galveston, TX 77553, USA
| | - Piero Addis
- Department of Environmental and Life Science, University of Cagliari, Via Fiorelli 1, 09126 Cagliari, Italy
| | - Haritz Arrizabalaga
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110 Pasaia – Gipuzkoa, Spain
| | - Miguel Baptista
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Avenida Nossa Senhora do Cabo 939, 2750-374 Cascais, Portugal
| | - Giovanni Bearzi
- Dolphin Biology and Conservation, Cordenons, Pordenone, Italy
| | - Michael A. Dance
- Department of Oceanography and Coastal Sciences, Louisiana State University, 2255 Energy, Coast and Environment Building, Baton Rouge, LA 70803, USA
| | - Igaratza Fraile
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110 Pasaia – Gipuzkoa, Spain
| | - Thomas Lacoue-Labarthe
- Littoral Environnement et Sociétés (LIENSs) - UMR 7266 Bâtiment ILE, 2, rue Olympe de Gouges, 17000 La Rochelle, France
| | - Jessica M. Lee
- Department of Marine Biology, Texas A&M University, 1001 Texas Clipper Road, Galveston, TX 77553, USA
| | - Persefoni Megalofonou
- Department of Biology, National and Kapodistrian University of Athens,15784 Athens, Greece
| | - Rui Rosa
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Avenida Nossa Senhora do Cabo 939, 2750-374 Cascais, Portugal
| | - Ignacio Sobrino
- Instituto Español de Oceanografía, Puerto Pesquero s/n, 11006, Cádiz, Spain
| | - António V. Sykes
- Center of Marine Sciences, Universidade do Algarve Campus de Gambelas, 8005-139 Faro, Portugal
| | - Roger Villanueva
- Institut de Ciències del Mar (CSIC), Passeig Maritim 37-49, 08003 Barcelona, Spain
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