Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis

The great hammerhead shark Sphyrna mokarran and the scalloped hammerhead shark S. lewini are marine top predators with global distributions. However, limited information is available on the trophic ecology of hammerhead sharks in the Indian Ocean. In this study, we measured stable nitrogen and carbo...

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Authors: Lin, Yu-Jia, Hsun Hsu, H., Nazeer, Zahid, Panickan, Premlal, Maneja, Rommel H., Lozano-Cortés, Diego, Qasem, Ali, Delgado Huertas, Antonio, Jilani Rabaoui, Lotfi
Format: article
Status:Published version
Publication Date:2024
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/367155
Online Access:http://hdl.handle.net/10261/367155
Access Level:Open access
Keyword:Hammerhead shark
Sphyrna
Arabian Gulf
Trophic ecology
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spelling Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysisLin, Yu-JiaHsun Hsu, H.Nazeer, ZahidPanickan, PremlalManeja, Rommel H.Lozano-Cortés, DiegoQasem, AliDelgado Huertas, AntonioJilani Rabaoui, LotfiHammerhead sharkSphyrnaArabian GulfTrophic ecologyThe great hammerhead shark Sphyrna mokarran and the scalloped hammerhead shark S. lewini are marine top predators with global distributions. However, limited information is available on the trophic ecology of hammerhead sharks in the Indian Ocean. In this study, we measured stable nitrogen and carbon isotopes in the muscle tissues of neonates and juveniles of S. mokarran and S. lewini from the waters of the western Arabian Gulf. In general, values of δ15N were lower in S. mokarran (10.8–18.7%o) than in S. lewini (12.2–18.7%o), indicating a reliance on food sources with low nitrogen values. Isotopic niche similarities were observed between female and male S. mokarran. We further observed considerable ontogenetic changes in the δ15N values of both S. mokarran and S. lewini neonates (a reduction from 19 to 12%o), reflecting the maternal effect. The effects of total length and sex on the nitrogen and stable isotope values were nonsignificant in S. mokarran juveniles. The western Arabian Gulf likely serves as a key feeding ground for both the neonates and the juveniles of S. mokarran. By contrast, S. lewini appears to have a low level of reliance on this region.We thank the team at the Applied Research Center of Marine Studies, King Fahd University of Petroleum and Minerals, Saudi Arabia, for providing logistic support for this study. This work was supported by Saudi Aramco under its Sustaining Research Program for the Arabian Gulf (grant number: CEW02428). Y.-J.L. received support from Taiwan\u2019s Ministry of Education and National Science Council (grant numbers: 112\u20132611-M-110-009-MY3 and 112\u20132621-M-110-005).Peer reviewedInter ResearchNational Science Council (Taiwan)Delgado Huertas, Antonio [0000-0002-7240-1570]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/367155reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3354/esr01341Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3671552026-05-22T06:33:51Z
dc.title.none.fl_str_mv Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis
title Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis
spellingShingle Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis
Lin, Yu-Jia
Hammerhead shark
Sphyrna
Arabian Gulf
Trophic ecology
title_short Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis
title_full Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis
title_fullStr Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis
title_full_unstemmed Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis
title_sort Resource use by Sphyrna mokarran and S. lewini (Chondrichthyes) neonates and juveniles in the western Arabian Gulf: a stable isotope analysis
dc.creator.none.fl_str_mv Lin, Yu-Jia
Hsun Hsu, H.
Nazeer, Zahid
Panickan, Premlal
Maneja, Rommel H.
Lozano-Cortés, Diego
Qasem, Ali
Delgado Huertas, Antonio
Jilani Rabaoui, Lotfi
author Lin, Yu-Jia
author_facet Lin, Yu-Jia
Hsun Hsu, H.
Nazeer, Zahid
Panickan, Premlal
Maneja, Rommel H.
Lozano-Cortés, Diego
Qasem, Ali
Delgado Huertas, Antonio
Jilani Rabaoui, Lotfi
author_role author
author2 Hsun Hsu, H.
Nazeer, Zahid
Panickan, Premlal
Maneja, Rommel H.
Lozano-Cortés, Diego
Qasem, Ali
Delgado Huertas, Antonio
Jilani Rabaoui, Lotfi
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv National Science Council (Taiwan)
Delgado Huertas, Antonio [0000-0002-7240-1570]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Hammerhead shark
Sphyrna
Arabian Gulf
Trophic ecology
topic Hammerhead shark
Sphyrna
Arabian Gulf
Trophic ecology
description The great hammerhead shark Sphyrna mokarran and the scalloped hammerhead shark S. lewini are marine top predators with global distributions. However, limited information is available on the trophic ecology of hammerhead sharks in the Indian Ocean. In this study, we measured stable nitrogen and carbon isotopes in the muscle tissues of neonates and juveniles of S. mokarran and S. lewini from the waters of the western Arabian Gulf. In general, values of δ15N were lower in S. mokarran (10.8–18.7%o) than in S. lewini (12.2–18.7%o), indicating a reliance on food sources with low nitrogen values. Isotopic niche similarities were observed between female and male S. mokarran. We further observed considerable ontogenetic changes in the δ15N values of both S. mokarran and S. lewini neonates (a reduction from 19 to 12%o), reflecting the maternal effect. The effects of total length and sex on the nitrogen and stable isotope values were nonsignificant in S. mokarran juveniles. The western Arabian Gulf likely serves as a key feeding ground for both the neonates and the juveniles of S. mokarran. By contrast, S. lewini appears to have a low level of reliance on this region.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/367155
url http://hdl.handle.net/10261/367155
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3354/esr01341
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Inter Research
publisher.none.fl_str_mv Inter Research
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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