Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure
Here, we analyse changes throughout time in the isotopic niche of the Franciscana dolphin (Pontoporia blainvillei), the South American fur seal (Arctocephalus australis) and the South American sea lion (Otaria flavescens) from the Río de la Plata estuary and adjacent Atlantic Ocean to test the hypot...
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| Format: | article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/20.500.12008/22003 |
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| _version_ | 1868890084708712448 |
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| author | Drago, Massimiliano |
| author2 | Franco-Trecu, Valentina Segura, Ángel M. Valdivia Cabana, Meica González, Enrique M. Aguilar, Alex Cardona, Luis |
| author2_role | author author author author author author |
| author_browse | Aguilar, Alex Cardona, Luis Drago, Massimiliano Franco-Trecu, Valentina González, Enrique M. Segura, Ángel M. Valdivia Cabana, Meica |
| author_facet | Drago, Massimiliano Franco-Trecu, Valentina Segura, Ángel M. Valdivia Cabana, Meica González, Enrique M. Aguilar, Alex Cardona, Luis |
| author_role | author |
| collection | COLIBRI |
| dc.contributor.none.fl_str_mv | Franco-Trecu, Valentina. Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología Segura, Angel M. Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología Valdivia Cabana, Meica. Museo Nacional de Historia Natural (Uruguay). González, Enrique M. Museo Nacional de Historia Natural (Uruguay). |
| dc.creator.none.fl_str_mv | Drago, Massimiliano Franco-Trecu, Valentina Segura, Ángel M. Valdivia Cabana, Meica González, Enrique M. Aguilar, Alex Cardona, Luis |
| dc.date.none.fl_str_mv | 2018 2019-10-02T22:08:23Z 2019-10-02T22:08:23Z 20190930 |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | Drago, M., y otros. "Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure". Scientific Reports, 2018, 8, art.nro. 15759. doi: 10.1038/s41598-018-34100-8 2045-2322 https://hdl.handle.net/20.500.12008/22003 10.1038/s41598-018-34100-8 |
| dc.language.none.fl_str_mv | en eng |
| dc.publisher.none.fl_str_mv | Nature Publishing Group |
| dc.relation.none.fl_str_mv | Scientific Reports, 2018, 8, art. no. 15759 |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess Licencia Creative Commons Atribución (CC –BY 4.0) |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.none.fl_str_mv | Animal behaviour Ecosystem ecology Stable isotope analysis |
| dc.title.none.fl_str_mv | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure |
| dc.type.none.fl_str_mv | Artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | Here, we analyse changes throughout time in the isotopic niche of the Franciscana dolphin (Pontoporia blainvillei), the South American fur seal (Arctocephalus australis) and the South American sea lion (Otaria flavescens) from the Río de la Plata estuary and adjacent Atlantic Ocean to test the hypothesis that fishing may modify the diet of small-gape predators by reducing the average size of prey. The overall evidence, from stable isotope and stomach contents analyses, reveals major changes in resource partitioning between the three predators considered, mainly because of an increased access of Franciscana dolphins to juvenile demersal fishes. These results are consistent with the changes in the length distribution of demersal fish species resulting from fishing and suggest that Franciscana dolphin has been the most benefited species of the three marine mammal species considered because of its intermediate mouth gape. In conclusion, the impact of fishing on marine mammals goes beyond the simple reduction in prey biomass and is highly dependent on the mouth gape of the species involved. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_69cc0e6e0ec519f89188742e90e1f6cf |
| identifier_str_mv | Drago, M., y otros. "Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure". Scientific Reports, 2018, 8, art.nro. 15759. doi: 10.1038/s41598-018-34100-8 2045-2322 10.1038/s41598-018-34100-8 |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/22003 |
| publishDate | 2018 |
| publishDateSort | 2018 |
| publisher.none.fl_str_mv | Nature Publishing Group |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Licencia Creative Commons Atribución (CC –BY 4.0) |
| spelling | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structureDrago, MassimilianoFranco-Trecu, ValentinaSegura, Ángel M.Valdivia Cabana, MeicaGonzález, Enrique M.Aguilar, AlexCardona, LuisAnimal behaviourEcosystem ecologyStable isotope analysisHere, we analyse changes throughout time in the isotopic niche of the Franciscana dolphin (Pontoporia blainvillei), the South American fur seal (Arctocephalus australis) and the South American sea lion (Otaria flavescens) from the Río de la Plata estuary and adjacent Atlantic Ocean to test the hypothesis that fishing may modify the diet of small-gape predators by reducing the average size of prey. The overall evidence, from stable isotope and stomach contents analyses, reveals major changes in resource partitioning between the three predators considered, mainly because of an increased access of Franciscana dolphins to juvenile demersal fishes. These results are consistent with the changes in the length distribution of demersal fish species resulting from fishing and suggest that Franciscana dolphin has been the most benefited species of the three marine mammal species considered because of its intermediate mouth gape. In conclusion, the impact of fishing on marine mammals goes beyond the simple reduction in prey biomass and is highly dependent on the mouth gape of the species involved.Nature Publishing GroupFranco-Trecu, Valentina. Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de BiologíaSegura, Angel M. Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de BiologíaValdivia Cabana, Meica. Museo Nacional de Historia Natural (Uruguay). González, Enrique M. Museo Nacional de Historia Natural (Uruguay).2019-10-02T22:08:23Z2019-10-02T22:08:23Z201820190930Artículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfDrago, M., y otros. "Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure". Scientific Reports, 2018, 8, art.nro. 15759. doi: 10.1038/s41598-018-34100-8 2045-2322https://hdl.handle.net/20.500.12008/2200310.1038/s41598-018-34100-8 reponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaenengScientific Reports, 2018, 8, art. no. 15759Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad De La República. (Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución (CC –BY 4.0)oai:colibri.udelar.edu.uy:20.500.12008/220032026-04-14T10:09:14Z |
| spellingShingle | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure Drago, Massimiliano Animal behaviour Ecosystem ecology Stable isotope analysis |
| status_str | publishedVersion |
| title | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure |
| title_full | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure |
| title_fullStr | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure |
| title_full_unstemmed | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure |
| title_short | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure |
| title_sort | Mouth gape determines the response of marine top predators to long-term fishery-induced changes in food web structure |
| topic | Animal behaviour Ecosystem ecology Stable isotope analysis |
| url | https://hdl.handle.net/20.500.12008/22003 |