Modeling the influence of time and temperature on the levels of fatty acids in the liver of Antarctic fish Trematomus bernacchii
AbstractAntarctic fish (Trematomus bernacchii) are an ideal group for studying the effect of ocean warming on vital physiological and biochemical mechanisms of adaptation, including changes in the fatty acid composition to higher heat tolerance in the sub-zero waters of the Southern Ocean. Despite t...
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ftopenaccessrep:oai:zenodo.org:79811 2023-10-25T01:29:33+02:00 Modeling the influence of time and temperature on the levels of fatty acids in the liver of Antarctic fish Trematomus bernacchii Silvia Illuminati Cristina Truzzi Ikram Belghit Pedro Araujo Matteo Antonucci 2019-09-13 https://www.openaccessrepository.it/record/79811 https://doi.org/10.1007/s00300-019-02577-2 eng eng url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/79811 doi:10.1007/s00300-019-02577-2 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ General Agricultural and Biological Sciences info:eu-repo/semantics/article publication-article 2019 ftopenaccessrep https://doi.org/10.1007/s00300-019-02577-2 2023-09-26T22:16:54Z AbstractAntarctic fish (Trematomus bernacchii) are an ideal group for studying the effect of ocean warming on vital physiological and biochemical mechanisms of adaptation, including changes in the fatty acid composition to higher heat tolerance in the sub-zero waters of the Southern Ocean. Despite the awareness of the impact of ocean warming on marine life, bioclimatic models describing the effect of temperature and time on fatty acid levels in marine species have not been considered yet. The objective of the present study was to investigate changes in the concentrations of fatty acids in liver fromT. bernacchiiin response to an increase in temperature in the Antarctic region. Changes in the concentrations of fatty acids in liver fromT. bernacchiiwere observed after varying simultaneously and systematically the temperature and time. The fatty acid profiles were determined by gas chromatography prior to acclimation (− 1.8 °C) and after acclimation (0.0, 1.0, and 2.0 °C) at different times (1, 5, and 10 days). The observed changes were graphically visualized by expressing the fatty acid concentration in absolute units (mg g−1) as a function of the temperature and time using polynomial models. Major changes in fatty acid composition were observed at day 1 of exposition at all temperatures. At day 5, the fish seem to tolerate the new temperature condition. The concentrations of saturated fatty acids were almost constant throughout the various conditions. The concentrations of monounsaturated fatty acids (in particular 18:1n− 9) decrease at day 1 for all temperatures. In contrast, there was an increase in the concentrations of polyunsaturated fatty acids (in particular 20:5n− 3 and 22:6n− 3) with increasing temperatures after 1, 5, and 10 days of exposure. The proposed models were in agreement with reported studies on polar and temperate fish, indicating possibly similar adaptation mechanisms for teleost to cope with global warming. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository Antarctic Southern Ocean The Antarctic Polar Biology 42 11 2017 2030 |
institution |
Open Polar |
collection |
Istituto Nazionale di Fisica Nucleare (INFN): Open Access Repository |
op_collection_id |
ftopenaccessrep |
language |
English |
topic |
General Agricultural and Biological Sciences |
spellingShingle |
General Agricultural and Biological Sciences Silvia Illuminati Cristina Truzzi Ikram Belghit Pedro Araujo Matteo Antonucci Modeling the influence of time and temperature on the levels of fatty acids in the liver of Antarctic fish Trematomus bernacchii |
topic_facet |
General Agricultural and Biological Sciences |
description |
AbstractAntarctic fish (Trematomus bernacchii) are an ideal group for studying the effect of ocean warming on vital physiological and biochemical mechanisms of adaptation, including changes in the fatty acid composition to higher heat tolerance in the sub-zero waters of the Southern Ocean. Despite the awareness of the impact of ocean warming on marine life, bioclimatic models describing the effect of temperature and time on fatty acid levels in marine species have not been considered yet. The objective of the present study was to investigate changes in the concentrations of fatty acids in liver fromT. bernacchiiin response to an increase in temperature in the Antarctic region. Changes in the concentrations of fatty acids in liver fromT. bernacchiiwere observed after varying simultaneously and systematically the temperature and time. The fatty acid profiles were determined by gas chromatography prior to acclimation (− 1.8 °C) and after acclimation (0.0, 1.0, and 2.0 °C) at different times (1, 5, and 10 days). The observed changes were graphically visualized by expressing the fatty acid concentration in absolute units (mg g−1) as a function of the temperature and time using polynomial models. Major changes in fatty acid composition were observed at day 1 of exposition at all temperatures. At day 5, the fish seem to tolerate the new temperature condition. The concentrations of saturated fatty acids were almost constant throughout the various conditions. The concentrations of monounsaturated fatty acids (in particular 18:1n− 9) decrease at day 1 for all temperatures. In contrast, there was an increase in the concentrations of polyunsaturated fatty acids (in particular 20:5n− 3 and 22:6n− 3) with increasing temperatures after 1, 5, and 10 days of exposure. The proposed models were in agreement with reported studies on polar and temperate fish, indicating possibly similar adaptation mechanisms for teleost to cope with global warming. |
format |
Article in Journal/Newspaper |
author |
Silvia Illuminati Cristina Truzzi Ikram Belghit Pedro Araujo Matteo Antonucci |
author_facet |
Silvia Illuminati Cristina Truzzi Ikram Belghit Pedro Araujo Matteo Antonucci |
author_sort |
Silvia Illuminati |
title |
Modeling the influence of time and temperature on the levels of fatty acids in the liver of Antarctic fish Trematomus bernacchii |
title_short |
Modeling the influence of time and temperature on the levels of fatty acids in the liver of Antarctic fish Trematomus bernacchii |
title_full |
Modeling the influence of time and temperature on the levels of fatty acids in the liver of Antarctic fish Trematomus bernacchii |
title_fullStr |
Modeling the influence of time and temperature on the levels of fatty acids in the liver of Antarctic fish Trematomus bernacchii |
title_full_unstemmed |
Modeling the influence of time and temperature on the levels of fatty acids in the liver of Antarctic fish Trematomus bernacchii |
title_sort |
modeling the influence of time and temperature on the levels of fatty acids in the liver of antarctic fish trematomus bernacchii |
publishDate |
2019 |
url |
https://www.openaccessrepository.it/record/79811 https://doi.org/10.1007/s00300-019-02577-2 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
url:https://www.openaccessrepository.it/communities/itmirror https://www.openaccessrepository.it/record/79811 doi:10.1007/s00300-019-02577-2 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1007/s00300-019-02577-2 |
container_title |
Polar Biology |
container_volume |
42 |
container_issue |
11 |
container_start_page |
2017 |
op_container_end_page |
2030 |
_version_ |
1780733249406894080 |