Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses
The ecological role of species can vary among populations depending on local and regional differences in diet. This is particularly true for top predators such as the bottlenose dolphin (Tursiops truncatus), which exhibits a highly varied diet throughout its distribution range. Local dietary assessm...
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ftunivminho:oai:repositorium.sdum.uminho.pt:1822/63564 2023-05-15T17:35:14+02:00 Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses Giménez, Joan Marçalo, Ana Ramírez, Francisco Verborgh, Philippe Gauffier, Pauline Esteban, Ruth Nicolau, Lídia González-Ortegón, Enrique Baldó, Francisco Vilas, César Vingada, José V. G. Forero, Manuela de Stephanis, Renaud 2017 application/pdf http://hdl.handle.net/1822/63564 https://doi.org/10.1371/journal.pone.0184673 eng eng Public Library of Science (PLOS) info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F64889%2F2009/PT SFRH/BD/51416/2011 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0184673 Giménez J, Marçalo A, Ramírez F, Verborgh P, Gauffier P, Esteban R, et al. (2017) Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses. PLoS ONE 12(9): e0184673. https://doi.org/10.1371/journal.pone.0184673 1932-6203 http://hdl.handle.net/1822/63564 doi:10.1371/journal.pone.0184673 28898268 info:eu-repo/semantics/openAccess Science & Technology info:eu-repo/semantics/article 2017 ftunivminho https://doi.org/10.1371/journal.pone.0184673 2022-03-20T08:22:28Z The ecological role of species can vary among populations depending on local and regional differences in diet. This is particularly true for top predators such as the bottlenose dolphin (Tursiops truncatus), which exhibits a highly varied diet throughout its distribution range. Local dietary assessments are therefore critical to fully understand the role of this species within marine ecosystems, as well as its interaction with important ecosystem services such as fisheries. Here, we combined stomach content analyses (SCA) and stable isotope analyses (SIA) to describe bottlenose dolphins diet in the Gulf of Cadiz (North Atlantic Ocean). Prey items identified using SCA included European conger (Conger conger) and European hake (Merluccius merluccius) as the most important ingested prey. However, mass-balance isotopic mixing model (MixSIAR), using δ13C and δ15N, indicated that the assimilated diet consisted mainly on Sparidae species (e.g. seabream, Diplodus annularis and D. bellottii, rubberlip grunt, Plectorhinchus mediterraneus, and common pandora, Pagellus erythrinus) and a mixture of other species including European hake, mackerels (Scomber colias, S. japonicus and S. scombrus), European conger, red bandfish (Cepola macrophthalma) and European pilchard (Sardina pilchardus). These contrasting results highlight differences in the temporal and taxonomic resolution of each approach, but also point to potential differences between ingested (SCA) and assimilated (SIA) diets. Both approaches provide different insights, e.g. determination of consumed fish biomass for the management of fish stocks (SCA) or identification of important assimilated prey species to the consumer (SIA). The study was funded by Fundación Loro Parque, CEPSA (Compañía Española de Petroleos S.A.), EcoCet Project [CGL2011-25543], SafeSea EEA-Grants and European Commission’s Life Programme [MarPro NAT/PT/00038]. J.G. and R.dS. were funded by the Spanish Ministry of Economy and Competitiveness through the Severo Ochoa Programme for Centres of ... Article in Journal/Newspaper North Atlantic Universidade of Minho: RepositóriUM Hake ENVELOPE(15.612,15.612,66.797,66.797) Española ENVELOPE(-60.383,-60.383,-62.660,-62.660) PLOS ONE 12 9 e0184673 |
institution |
Open Polar |
collection |
Universidade of Minho: RepositóriUM |
op_collection_id |
ftunivminho |
language |
English |
topic |
Science & Technology |
spellingShingle |
Science & Technology Giménez, Joan Marçalo, Ana Ramírez, Francisco Verborgh, Philippe Gauffier, Pauline Esteban, Ruth Nicolau, Lídia González-Ortegón, Enrique Baldó, Francisco Vilas, César Vingada, José V. G. Forero, Manuela de Stephanis, Renaud Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses |
topic_facet |
Science & Technology |
description |
The ecological role of species can vary among populations depending on local and regional differences in diet. This is particularly true for top predators such as the bottlenose dolphin (Tursiops truncatus), which exhibits a highly varied diet throughout its distribution range. Local dietary assessments are therefore critical to fully understand the role of this species within marine ecosystems, as well as its interaction with important ecosystem services such as fisheries. Here, we combined stomach content analyses (SCA) and stable isotope analyses (SIA) to describe bottlenose dolphins diet in the Gulf of Cadiz (North Atlantic Ocean). Prey items identified using SCA included European conger (Conger conger) and European hake (Merluccius merluccius) as the most important ingested prey. However, mass-balance isotopic mixing model (MixSIAR), using δ13C and δ15N, indicated that the assimilated diet consisted mainly on Sparidae species (e.g. seabream, Diplodus annularis and D. bellottii, rubberlip grunt, Plectorhinchus mediterraneus, and common pandora, Pagellus erythrinus) and a mixture of other species including European hake, mackerels (Scomber colias, S. japonicus and S. scombrus), European conger, red bandfish (Cepola macrophthalma) and European pilchard (Sardina pilchardus). These contrasting results highlight differences in the temporal and taxonomic resolution of each approach, but also point to potential differences between ingested (SCA) and assimilated (SIA) diets. Both approaches provide different insights, e.g. determination of consumed fish biomass for the management of fish stocks (SCA) or identification of important assimilated prey species to the consumer (SIA). The study was funded by Fundación Loro Parque, CEPSA (Compañía Española de Petroleos S.A.), EcoCet Project [CGL2011-25543], SafeSea EEA-Grants and European Commission’s Life Programme [MarPro NAT/PT/00038]. J.G. and R.dS. were funded by the Spanish Ministry of Economy and Competitiveness through the Severo Ochoa Programme for Centres of ... |
format |
Article in Journal/Newspaper |
author |
Giménez, Joan Marçalo, Ana Ramírez, Francisco Verborgh, Philippe Gauffier, Pauline Esteban, Ruth Nicolau, Lídia González-Ortegón, Enrique Baldó, Francisco Vilas, César Vingada, José V. G. Forero, Manuela de Stephanis, Renaud |
author_facet |
Giménez, Joan Marçalo, Ana Ramírez, Francisco Verborgh, Philippe Gauffier, Pauline Esteban, Ruth Nicolau, Lídia González-Ortegón, Enrique Baldó, Francisco Vilas, César Vingada, José V. G. Forero, Manuela de Stephanis, Renaud |
author_sort |
Giménez, Joan |
title |
Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses |
title_short |
Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses |
title_full |
Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses |
title_fullStr |
Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses |
title_full_unstemmed |
Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses |
title_sort |
diet of bottlenose dolphins (tursiops truncatus) from the gulf of cadiz: insights from stomach content and stable isotope analyses |
publisher |
Public Library of Science (PLOS) |
publishDate |
2017 |
url |
http://hdl.handle.net/1822/63564 https://doi.org/10.1371/journal.pone.0184673 |
long_lat |
ENVELOPE(15.612,15.612,66.797,66.797) ENVELOPE(-60.383,-60.383,-62.660,-62.660) |
geographic |
Hake Española |
geographic_facet |
Hake Española |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F64889%2F2009/PT SFRH/BD/51416/2011 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0184673 Giménez J, Marçalo A, Ramírez F, Verborgh P, Gauffier P, Esteban R, et al. (2017) Diet of bottlenose dolphins (Tursiops truncatus) from the Gulf of Cadiz: Insights from stomach content and stable isotope analyses. PLoS ONE 12(9): e0184673. https://doi.org/10.1371/journal.pone.0184673 1932-6203 http://hdl.handle.net/1822/63564 doi:10.1371/journal.pone.0184673 28898268 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0184673 |
container_title |
PLOS ONE |
container_volume |
12 |
container_issue |
9 |
container_start_page |
e0184673 |
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1766134319790686208 |