Twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters
Aquaculture activities are often established in the vicinity of highly populated, potentially contaminated areas. Animals cultured at such locations, namely bivalves, are frequently used as test organisms in ecotoxicological testing. In this case, a period of depuration is required to allow the norm...
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Online Access: | http://hdl.handle.net/10773/34207 https://doi.org/10.1007/s11356-021-12683-6 |
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ftria:oai:ria.ua.pt:10773/34207 2024-09-15T18:03:11+00:00 Twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters Bio, Sofia Nunes, Bruno 2021-06 http://hdl.handle.net/10773/34207 https://doi.org/10.1007/s11356-021-12683-6 eng eng Springer Nature POCI-01-0145-FEDER-029203 info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50017%2F2020/PT info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50017%2F2020/PT 0944-1344 http://hdl.handle.net/10773/34207 doi:10.1007/s11356-021-12683-6 1614-7499 restrictedAccess https://creativecommons.org/licenses/by/4.0/ Biomarkers Chemical contamination Crassostrea gigas Excretion Physiology Metabolism article 2021 ftria https://doi.org/10.1007/s11356-021-12683-6 2024-07-22T03:14:25Z Aquaculture activities are often established in the vicinity of highly populated, potentially contaminated areas. Animals cultured at such locations, namely bivalves, are frequently used as test organisms in ecotoxicological testing. In this case, a period of depuration is required to allow the normalization of physiological processes, which are likely to be altered after exposure to a multiplicity of waterborne contaminants occurring in the wild. One of the most important species in modern marine aquaculture is the oyster species Crassostrea gigas. The aim of this study was to assess if the current depuration time frame of 24 h (adopted by most aquaculture facilities), is long enough to permit oysters to revert potential toxic effects exerted by environmental contaminants, allowing their use in laboratory-based ecotoxicological studies. The selected approach involved the monitoring of biochemical (antioxidant defence, oxidative damage, phase II metabolism, and neurological homeostasis) and physiological (condition index) parameters, along a period of 42 days. The obtained results showed that a period of 24 h does not revert any of the potential toxic effects caused by environmental contaminants to which animals may have been previously subjected; even a period of 42 days was not long enough for the oysters to completely normalize the levels of their antioxidant defences, namely total GPx activity, which increased over time. Lipid peroxidation was also increased during the depuration period, and the activity of the metabolic isoenzymes GSTs was significantly decreased. Furthermore, AChE activity measured in the adductor muscle of oysters was increased over time. These assumptions suggest that a period of depuration longer than 24 h is mandatory to obtain adequate test organisms of this oyster species, to be used for ecotoxicological testing purposes. published Article in Journal/Newspaper Crassostrea gigas Repositório Institucional da Universidade de Aveiro (RIA) Environmental Science and Pollution Research 28 23 29601 29614 |
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Open Polar |
collection |
Repositório Institucional da Universidade de Aveiro (RIA) |
op_collection_id |
ftria |
language |
English |
topic |
Biomarkers Chemical contamination Crassostrea gigas Excretion Physiology Metabolism |
spellingShingle |
Biomarkers Chemical contamination Crassostrea gigas Excretion Physiology Metabolism Bio, Sofia Nunes, Bruno Twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters |
topic_facet |
Biomarkers Chemical contamination Crassostrea gigas Excretion Physiology Metabolism |
description |
Aquaculture activities are often established in the vicinity of highly populated, potentially contaminated areas. Animals cultured at such locations, namely bivalves, are frequently used as test organisms in ecotoxicological testing. In this case, a period of depuration is required to allow the normalization of physiological processes, which are likely to be altered after exposure to a multiplicity of waterborne contaminants occurring in the wild. One of the most important species in modern marine aquaculture is the oyster species Crassostrea gigas. The aim of this study was to assess if the current depuration time frame of 24 h (adopted by most aquaculture facilities), is long enough to permit oysters to revert potential toxic effects exerted by environmental contaminants, allowing their use in laboratory-based ecotoxicological studies. The selected approach involved the monitoring of biochemical (antioxidant defence, oxidative damage, phase II metabolism, and neurological homeostasis) and physiological (condition index) parameters, along a period of 42 days. The obtained results showed that a period of 24 h does not revert any of the potential toxic effects caused by environmental contaminants to which animals may have been previously subjected; even a period of 42 days was not long enough for the oysters to completely normalize the levels of their antioxidant defences, namely total GPx activity, which increased over time. Lipid peroxidation was also increased during the depuration period, and the activity of the metabolic isoenzymes GSTs was significantly decreased. Furthermore, AChE activity measured in the adductor muscle of oysters was increased over time. These assumptions suggest that a period of depuration longer than 24 h is mandatory to obtain adequate test organisms of this oyster species, to be used for ecotoxicological testing purposes. published |
format |
Article in Journal/Newspaper |
author |
Bio, Sofia Nunes, Bruno |
author_facet |
Bio, Sofia Nunes, Bruno |
author_sort |
Bio, Sofia |
title |
Twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters |
title_short |
Twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters |
title_full |
Twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters |
title_fullStr |
Twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters |
title_full_unstemmed |
Twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters |
title_sort |
twists and turns of an oyster's life: effects of different depuration periods on physiological biochemical functions of oysters |
publisher |
Springer Nature |
publishDate |
2021 |
url |
http://hdl.handle.net/10773/34207 https://doi.org/10.1007/s11356-021-12683-6 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
POCI-01-0145-FEDER-029203 info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50017%2F2020/PT info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50017%2F2020/PT 0944-1344 http://hdl.handle.net/10773/34207 doi:10.1007/s11356-021-12683-6 1614-7499 |
op_rights |
restrictedAccess https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1007/s11356-021-12683-6 |
container_title |
Environmental Science and Pollution Research |
container_volume |
28 |
container_issue |
23 |
container_start_page |
29601 |
op_container_end_page |
29614 |
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1810440700766978048 |