New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach
Biomarker analysis, especially fatty acids (FA) and stable isotopes (SI), has become a useful tool to elucidate the flow of energy and trophic interactions in an ecosystem and to analyse the diet of species that are hard to observe whilst feeding. Herein we compare FA profiles and SI composition (ni...
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ftconicet:oai:ri.conicet.gov.ar:11336/172588 2023-10-09T21:46:38+02:00 New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach Moreira, María Eugenia Martínez Novillo, Manuel Mintenbeck, Katja Alurralde, Roque Gastón Barrera Oro, Esteban De Troch, Marleen application/pdf http://hdl.handle.net/11336/172588 eng eng Springer info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s00300-021-02903-7 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-021-02903-7 http://hdl.handle.net/11336/172588 Moreira, María Eugenia; Martínez Novillo, Manuel; Mintenbeck, Katja; Alurralde, Roque Gastón; Barrera Oro, Esteban; et al.; New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach; Springer; Polar Biology; 44; 8; 6-2021; 1591-1603 0722-4060 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTICA DIET FATTY ACIDS NOTOTHENIID FISH SOUTH SHETLAND ISLANDS STABLE ISOTOPES https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-021-02903-7 2023-09-24T18:40:34Z Biomarker analysis, especially fatty acids (FA) and stable isotopes (SI), has become a useful tool to elucidate the flow of energy and trophic interactions in an ecosystem and to analyse the diet of species that are hard to observe whilst feeding. Herein we compare FA profiles and SI composition (nitrogen, δ15N and carbon, δ13C) of muscle tissue from two sympatric Antarctic fish species—Notothenia rossii and N. coriiceps—that are key components in the inshore ecosystem of the South Shetland Islands. For both nototheniids, potential benthic food sources (algae, amphipods, polychaetes and gastropods) were screened in order to re-evaluate their trophic position (TP) and the energy flow. Significant differences in FA and SI composition between the two fish species were found. Notothenia rossii showed a higher total FA concentration, with high levels of polyunsaturated FA. Conversely, the potential food sources tested showed low concentrations of these FAs. This could indicate that both nototheniids are feeding mainly on another food source or that FA bioconversion takes place. While the FA results might suggest a possible trophic niche segregation between N. rossii and N. coriiceps, both species occupy a similar trophic position. Furthermore, we found a 50-times higher total concentration of monounsaturated FA in N. rossii than in N. coriiceps that can be related to the higher buoyancy capacity of the former. Trophic biomarkers did not elucidate the main prey item as lipid source for N. rossii and N. coriiceps, suggesting that other food sources and potential fatty acid bioconversion should be further investigated. Fil: Moreira, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. Laboratorio de Biología Funcional y Biotecnología; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Fil: ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino Notothenia rossii Polar Biology South Shetland Islands CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula South Shetland Islands Argentino Argentina Polar Biology 44 8 1591 1603 |
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Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTARCTICA DIET FATTY ACIDS NOTOTHENIID FISH SOUTH SHETLAND ISLANDS STABLE ISOTOPES https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTICA DIET FATTY ACIDS NOTOTHENIID FISH SOUTH SHETLAND ISLANDS STABLE ISOTOPES https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Moreira, María Eugenia Martínez Novillo, Manuel Mintenbeck, Katja Alurralde, Roque Gastón Barrera Oro, Esteban De Troch, Marleen New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach |
topic_facet |
ANTARCTICA DIET FATTY ACIDS NOTOTHENIID FISH SOUTH SHETLAND ISLANDS STABLE ISOTOPES https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
Biomarker analysis, especially fatty acids (FA) and stable isotopes (SI), has become a useful tool to elucidate the flow of energy and trophic interactions in an ecosystem and to analyse the diet of species that are hard to observe whilst feeding. Herein we compare FA profiles and SI composition (nitrogen, δ15N and carbon, δ13C) of muscle tissue from two sympatric Antarctic fish species—Notothenia rossii and N. coriiceps—that are key components in the inshore ecosystem of the South Shetland Islands. For both nototheniids, potential benthic food sources (algae, amphipods, polychaetes and gastropods) were screened in order to re-evaluate their trophic position (TP) and the energy flow. Significant differences in FA and SI composition between the two fish species were found. Notothenia rossii showed a higher total FA concentration, with high levels of polyunsaturated FA. Conversely, the potential food sources tested showed low concentrations of these FAs. This could indicate that both nototheniids are feeding mainly on another food source or that FA bioconversion takes place. While the FA results might suggest a possible trophic niche segregation between N. rossii and N. coriiceps, both species occupy a similar trophic position. Furthermore, we found a 50-times higher total concentration of monounsaturated FA in N. rossii than in N. coriiceps that can be related to the higher buoyancy capacity of the former. Trophic biomarkers did not elucidate the main prey item as lipid source for N. rossii and N. coriiceps, suggesting that other food sources and potential fatty acid bioconversion should be further investigated. Fil: Moreira, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. Laboratorio de Biología Funcional y Biotecnología; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Fil: ... |
format |
Article in Journal/Newspaper |
author |
Moreira, María Eugenia Martínez Novillo, Manuel Mintenbeck, Katja Alurralde, Roque Gastón Barrera Oro, Esteban De Troch, Marleen |
author_facet |
Moreira, María Eugenia Martínez Novillo, Manuel Mintenbeck, Katja Alurralde, Roque Gastón Barrera Oro, Esteban De Troch, Marleen |
author_sort |
Moreira, María Eugenia |
title |
New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach |
title_short |
New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach |
title_full |
New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach |
title_fullStr |
New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach |
title_full_unstemmed |
New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach |
title_sort |
new insights into the autecology of the two sympatric fish species notothenia coriiceps and n. rossii from western antarctic peninsula: a trophic biomarkers approach |
publisher |
Springer |
url |
http://hdl.handle.net/11336/172588 |
geographic |
Antarctic Antarctic Peninsula South Shetland Islands Argentino Argentina |
geographic_facet |
Antarctic Antarctic Peninsula South Shetland Islands Argentino Argentina |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino Notothenia rossii Polar Biology South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Dirección Nacional del Antártico Instituto Antártico Argentino Notothenia rossii Polar Biology South Shetland Islands |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/10.1007/s00300-021-02903-7 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-021-02903-7 http://hdl.handle.net/11336/172588 Moreira, María Eugenia; Martínez Novillo, Manuel; Mintenbeck, Katja; Alurralde, Roque Gastón; Barrera Oro, Esteban; et al.; New insights into the autecology of the two sympatric fish species Notothenia coriiceps and N. rossii from western Antarctic Peninsula: A trophic biomarkers approach; Springer; Polar Biology; 44; 8; 6-2021; 1591-1603 0722-4060 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-021-02903-7 |
container_title |
Polar Biology |
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44 |
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8 |
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1591 |
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1603 |
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1779309115875524608 |