Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico
An assessment of mercury (Hg) concentrations and nitrogen stable isotope (δ15N) was conducted in the food chain of the Atlantic spotted dolphin (Stenella frontalis), including phytoplankton, zooplankton, planktivorous fish and its major prey (predatory fish and a single species of cephalopod), that...
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Format: | Article in Journal/Newspaper |
Language: | Spanish |
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2017
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Online Access: | https://dialnet.unirioja.es/servlet/oaiart?codigo=6111105 |
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ftdialnet:oai:dialnet.unirioja.es:ART0001217539 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Dialnet - Portada de revistas (Universidad de La Rioja) |
op_collection_id |
ftdialnet |
language |
Spanish |
topic |
Marine mammal coastal aquatic biota toxic element biotransference ecological tracer Mamífero marino biota acuática costera elemento toxico trazador ecológico biotransferencia |
spellingShingle |
Marine mammal coastal aquatic biota toxic element biotransference ecological tracer Mamífero marino biota acuática costera elemento toxico trazador ecológico biotransferencia Kehrig, Helena do A Baptista, Gilberto Di Beneditto, Ana Paula Madeira Almeida, Marcelo G Rezende, Carlos Eduardo Siciliano, Salvatore de Moura, Jailson F. Moreira, Isabel Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico |
topic_facet |
Marine mammal coastal aquatic biota toxic element biotransference ecological tracer Mamífero marino biota acuática costera elemento toxico trazador ecológico biotransferencia |
description |
An assessment of mercury (Hg) concentrations and nitrogen stable isotope (δ15N) was conducted in the food chain of the Atlantic spotted dolphin (Stenella frontalis), including phytoplankton, zooplankton, planktivorous fish and its major prey (predatory fish and a single species of cephalopod), that compose a tropical trophic chain of the Brazilian southeastern coast. Tissue concentrations of Hg in a voracious predator fish, the largehead hairtail (Trichiurus lepturus), one of the dolphin's prey, were 9.8 times lower than median concentrations found in dolphin tissues. δ15N values in predatory fish were found to be lower to those of its predator the spotted dolphin. Isotopic data suggested significant differences for δ15N along the trophic chain, with the top predator (dolphin) exhibiting heavier value, followed by the voracious predator fish and the benthonic carnivorous fish, the whitemouth croaker (Micropogonias furnieri). Phytoplankton displayed the lightest δ15N, followed by zooplankton and the planktophagous fish, the lebranche mullet (Mugil liza). This fish species and the cephalopod showed the lowest median Hg concentration. All links of the entire trophic chain presented trophic transfer of Hg with a biomagnification factor higher than 1. A significant relationship was found between the log Hg concentration and trophic level (TL) of all evaluated species, with a positive slope (β= 0.87). The calculated trophic magnification factor (TMF= 7.44) indicates that Hg concentration increased per TL, and also that the entire coastal food chain from the South Atlantic Ocean presented a biomagnification power of Hg within a range previously reported for tropical coastal ecosystems. Se realizó una evaluación de las concentraciones del mercurio (Hg) y del isótopo estable de nitrógeno (δ15N) en la cadena trófica del Delfín Moteado del Atlántico (Stenella frontalis), incluyendo fitoplancton, zooplancton, peces planctívoros y sus principales presas (peces depredadores y una sola especie de cefalópodo), componentes de ... |
format |
Article in Journal/Newspaper |
author |
Kehrig, Helena do A Baptista, Gilberto Di Beneditto, Ana Paula Madeira Almeida, Marcelo G Rezende, Carlos Eduardo Siciliano, Salvatore de Moura, Jailson F. Moreira, Isabel |
author_facet |
Kehrig, Helena do A Baptista, Gilberto Di Beneditto, Ana Paula Madeira Almeida, Marcelo G Rezende, Carlos Eduardo Siciliano, Salvatore de Moura, Jailson F. Moreira, Isabel |
author_sort |
Kehrig, Helena do A |
title |
Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico |
title_short |
Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico |
title_full |
Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico |
title_fullStr |
Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico |
title_full_unstemmed |
Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico |
title_sort |
biomagnificación de mercurio en la cadena trófica del delfín moteado del atlántico(stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico |
publishDate |
2017 |
url |
https://dialnet.unirioja.es/servlet/oaiart?codigo=6111105 |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Revista de biología marina y oceanografía, ISSN 0717-3326, Vol. 52, Nº. 2, 2017, pags. 233-244 |
op_relation |
https://dialnet.unirioja.es/servlet/oaiart?codigo=6111105 (Revista) ISSN 0718-1957 (Revista) ISSN 0717-3326 |
op_rights |
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1796953630622875648 |
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ftdialnet:oai:dialnet.unirioja.es:ART0001217539 2024-04-21T08:11:37+00:00 Biomagnificación de mercurio en la cadena trófica del Delfín Moteado del Atlántico(Stenella frontalis), usando el isótopo estable de nitrógeno como marcador ecológico Kehrig, Helena do A Baptista, Gilberto Di Beneditto, Ana Paula Madeira Almeida, Marcelo G Rezende, Carlos Eduardo Siciliano, Salvatore de Moura, Jailson F. Moreira, Isabel 2017 application/pdf https://dialnet.unirioja.es/servlet/oaiart?codigo=6111105 spa spa https://dialnet.unirioja.es/servlet/oaiart?codigo=6111105 (Revista) ISSN 0718-1957 (Revista) ISSN 0717-3326 LICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. Por tanto, cualquier acto de reproducción, distribución, comunicación pública y/o transformación total o parcial requiere el consentimiento expreso y escrito de aquéllos. Cualquier enlace al texto completo de estos documentos deberá hacerse a través de la URL oficial de éstos en Dialnet. Más información: https://dialnet.unirioja.es/info/derechosOAI | INTELLECTUAL PROPERTY RIGHTS STATEMENT: Full text documents hosted by Dialnet are protected by copyright and/or related rights. This digital object is accessible without charge, but its use is subject to the licensing conditions set by its authors or editors. Unless expressly stated otherwise in the licensing conditions, you are free to linking, browsing, printing and making a copy for your own personal purposes. All other acts of reproduction and communication to the public are subject to the licensing conditions expressed by editors and authors and require consent from them. Any link to this document should be made using its official URL in Dialnet. More info: https://dialnet.unirioja.es/info/derechosOAI Revista de biología marina y oceanografía, ISSN 0717-3326, Vol. 52, Nº. 2, 2017, pags. 233-244 Marine mammal coastal aquatic biota toxic element biotransference ecological tracer Mamífero marino biota acuática costera elemento toxico trazador ecológico biotransferencia text (article) 2017 ftdialnet 2024-03-27T15:36:26Z An assessment of mercury (Hg) concentrations and nitrogen stable isotope (δ15N) was conducted in the food chain of the Atlantic spotted dolphin (Stenella frontalis), including phytoplankton, zooplankton, planktivorous fish and its major prey (predatory fish and a single species of cephalopod), that compose a tropical trophic chain of the Brazilian southeastern coast. Tissue concentrations of Hg in a voracious predator fish, the largehead hairtail (Trichiurus lepturus), one of the dolphin's prey, were 9.8 times lower than median concentrations found in dolphin tissues. δ15N values in predatory fish were found to be lower to those of its predator the spotted dolphin. Isotopic data suggested significant differences for δ15N along the trophic chain, with the top predator (dolphin) exhibiting heavier value, followed by the voracious predator fish and the benthonic carnivorous fish, the whitemouth croaker (Micropogonias furnieri). Phytoplankton displayed the lightest δ15N, followed by zooplankton and the planktophagous fish, the lebranche mullet (Mugil liza). This fish species and the cephalopod showed the lowest median Hg concentration. All links of the entire trophic chain presented trophic transfer of Hg with a biomagnification factor higher than 1. A significant relationship was found between the log Hg concentration and trophic level (TL) of all evaluated species, with a positive slope (β= 0.87). The calculated trophic magnification factor (TMF= 7.44) indicates that Hg concentration increased per TL, and also that the entire coastal food chain from the South Atlantic Ocean presented a biomagnification power of Hg within a range previously reported for tropical coastal ecosystems. Se realizó una evaluación de las concentraciones del mercurio (Hg) y del isótopo estable de nitrógeno (δ15N) en la cadena trófica del Delfín Moteado del Atlántico (Stenella frontalis), incluyendo fitoplancton, zooplancton, peces planctívoros y sus principales presas (peces depredadores y una sola especie de cefalópodo), componentes de ... Article in Journal/Newspaper South Atlantic Ocean Dialnet - Portada de revistas (Universidad de La Rioja) |