Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids
Due to global warming it is predicted that freeze-thaw cycles will increase in Arctic and cold temperate regions. The effects of this variation becomes of particular ecological importance to freeze-tolerant species when it is combined with chemical pollutants. We compared the effect of control tempe...
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Online Access: | https://pure.au.dk/portal/en/publications/081c213a-2e51-4414-b35c-3b5eba1ae4c0 https://doi.org/10.1021/es502161z |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/081c213a-2e51-4414-b35c-3b5eba1ae4c0 2024-02-11T10:01:23+01:00 Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids Patrício Silva, Ana L Enggrob, Kirsten Slotsbo, Stine Amorim, Mónica J B Holmstrup, Martin 2014-08-19 https://pure.au.dk/portal/en/publications/081c213a-2e51-4414-b35c-3b5eba1ae4c0 https://doi.org/10.1021/es502161z eng eng https://pure.au.dk/portal/en/publications/081c213a-2e51-4414-b35c-3b5eba1ae4c0 info:eu-repo/semantics/restrictedAccess Patrício Silva , A L , Enggrob , K , Slotsbo , S , Amorim , M J B & Holmstrup , M 2014 , ' Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids ' , Environmental Science & Technology (Washington) , vol. 48 , no. 16 , pp. 9790-9796 . https://doi.org/10.1021/es502161z article 2014 ftuniaarhuspubl https://doi.org/10.1021/es502161z 2024-01-17T23:59:17Z Due to global warming it is predicted that freeze-thaw cycles will increase in Arctic and cold temperate regions. The effects of this variation becomes of particular ecological importance to freeze-tolerant species when it is combined with chemical pollutants. We compared the effect of control temperature (2 °C), daily freeze-thaw cycles (2 to -4 °C) and constant freezing (-2 °C) temperatures on the cold-tolerance of oligochaete worms (Enchytraeus albidus) and tested how survival was influenced by pre-exposure to 4-nonylphenol (4-NP), a common nonionic detergent found in sewage sludge amended soils. Results showed that combined effect of 4-NP and daily freeze-thaw cycles can cause higher mortality to worms as compared with sustained freezing or control temperature. Exposure to 4-NP caused a substantial depletion of glycogen reserves which is catabolized during freezing to produce cryoprotective concentrations of free glucose. Further, exposure to freeze-thaw cycles resulted in higher concentrations of 4-NP in worm tissues as compared to constant freezing or control temperature (2 °C). Thus, worms exposed to combined effect of freeze-thaw cycles and 4-NP suffer higher consequences, with the toxic effect of the chemical potentiating the deleterious effects of freezing and thawing. Article in Journal/Newspaper Arctic Global warming Aarhus University: Research Arctic Environmental Science & Technology 48 16 9790 9796 |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
Due to global warming it is predicted that freeze-thaw cycles will increase in Arctic and cold temperate regions. The effects of this variation becomes of particular ecological importance to freeze-tolerant species when it is combined with chemical pollutants. We compared the effect of control temperature (2 °C), daily freeze-thaw cycles (2 to -4 °C) and constant freezing (-2 °C) temperatures on the cold-tolerance of oligochaete worms (Enchytraeus albidus) and tested how survival was influenced by pre-exposure to 4-nonylphenol (4-NP), a common nonionic detergent found in sewage sludge amended soils. Results showed that combined effect of 4-NP and daily freeze-thaw cycles can cause higher mortality to worms as compared with sustained freezing or control temperature. Exposure to 4-NP caused a substantial depletion of glycogen reserves which is catabolized during freezing to produce cryoprotective concentrations of free glucose. Further, exposure to freeze-thaw cycles resulted in higher concentrations of 4-NP in worm tissues as compared to constant freezing or control temperature (2 °C). Thus, worms exposed to combined effect of freeze-thaw cycles and 4-NP suffer higher consequences, with the toxic effect of the chemical potentiating the deleterious effects of freezing and thawing. |
format |
Article in Journal/Newspaper |
author |
Patrício Silva, Ana L Enggrob, Kirsten Slotsbo, Stine Amorim, Mónica J B Holmstrup, Martin |
spellingShingle |
Patrício Silva, Ana L Enggrob, Kirsten Slotsbo, Stine Amorim, Mónica J B Holmstrup, Martin Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids |
author_facet |
Patrício Silva, Ana L Enggrob, Kirsten Slotsbo, Stine Amorim, Mónica J B Holmstrup, Martin |
author_sort |
Patrício Silva, Ana L |
title |
Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids |
title_short |
Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids |
title_full |
Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids |
title_fullStr |
Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids |
title_full_unstemmed |
Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids |
title_sort |
importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids |
publishDate |
2014 |
url |
https://pure.au.dk/portal/en/publications/081c213a-2e51-4414-b35c-3b5eba1ae4c0 https://doi.org/10.1021/es502161z |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Global warming |
genre_facet |
Arctic Global warming |
op_source |
Patrício Silva , A L , Enggrob , K , Slotsbo , S , Amorim , M J B & Holmstrup , M 2014 , ' Importance of freeze-thaw events in low temperature ecotoxicology of cold tolerant enchytraeids ' , Environmental Science & Technology (Washington) , vol. 48 , no. 16 , pp. 9790-9796 . https://doi.org/10.1021/es502161z |
op_relation |
https://pure.au.dk/portal/en/publications/081c213a-2e51-4414-b35c-3b5eba1ae4c0 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1021/es502161z |
container_title |
Environmental Science & Technology |
container_volume |
48 |
container_issue |
16 |
container_start_page |
9790 |
op_container_end_page |
9796 |
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1790597202339430400 |