The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill
In aquatic environments, plastic pollution occurs concomitantly with anthropogenic climate stressors such as ocean acidification. Within the Southern Ocean, Antarctic krill (Euphausia Superba) support many marine predators and play a key role in the biogeochemical cycle. Ocean acidification and plas...
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Frontiers in Marine Science
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ftplymouthml:oai:plymsea.ac.uk:9314 2023-05-15T13:57:48+02:00 The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill Rowlands, E Galloway, T Cole, MJ Lewis, C Peck, V Thorpe, S Manno, C 2021-08-03 text http://plymsea.ac.uk/id/eprint/9314/ http://plymsea.ac.uk/id/eprint/9314/1/fmars-08-709763.pdf https://doi.org/10.3389/fmars.2021.709763 en eng Frontiers in Marine Science http://plymsea.ac.uk/id/eprint/9314/1/fmars-08-709763.pdf Rowlands, E; Galloway, T; Cole, MJ; Lewis, C; Peck, V; Thorpe, S; Manno, C. 2021 The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill. Frontiers in Marine Science, 8. https://doi.org/10.3389/fmars.2021.709763 <https://doi.org/10.3389/fmars.2021.709763> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftplymouthml https://doi.org/10.3389/fmars.2021.709763 2022-09-13T05:49:55Z In aquatic environments, plastic pollution occurs concomitantly with anthropogenic climate stressors such as ocean acidification. Within the Southern Ocean, Antarctic krill (Euphausia Superba) support many marine predators and play a key role in the biogeochemical cycle. Ocean acidification and plastic pollution have been acknowledged to hinder Antarctic krill development and physiology in singularity, however potential multi-stressor effects of plastic particulates coupled with ocean acidification are unexplored. Furthermore, Antarctic krill may be especially vulnerable to plastic pollution due to their close association with sea-ice, a known plastic sink. Here, we investigate the behaviour of nanoplastic [spherical, aminated (NH2), and yellow-green fluorescent polystyrene nanoparticles] in Antarctic seawater and explore the single and combined effects of nanoplastic (160 nm radius, at a concentration of 2.5 µg ml−1) and ocean acidification (pCO2 ∼900, pHT 7.7) on the embryonic development of Antarctic krill. Gravid female krill were collected in the Atlantic sector of the Southern Ocean (North Scotia Sea). Produced eggs were incubated at 0.5 ◦C in four treatments (control, nanoplastic, ocean acidification and the multi-stressor scenario of nanoplastic presence, and ocean acidification) and their embryonic development after 6 days, at the incubation endpoint, was determined. We observed that negatively charged nanoplastic particles suspended in seawater from the Scotia Sea aggregated to sizes exceeding the nanoscale after 24 h (1054.13 ± 53.49 nm). Further, we found that the proportion of embryos developing through the early stages to reach at least the limb bud stage was highest in the control treatment (21.84%) and lowest in the multi-stressor treatment (13.17%). Since the biological thresholds to any stressors can be altered by the presence of additional stressors, we propose that future nanoplastic ecotoxicology studies should consider the changing global ocean under future climate scenarios for assessments ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Ocean acidification Scotia Sea Sea ice Southern Ocean Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Antarctic Scotia Sea Southern Ocean Frontiers in Marine Science 8 |
institution |
Open Polar |
collection |
Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
op_collection_id |
ftplymouthml |
language |
English |
description |
In aquatic environments, plastic pollution occurs concomitantly with anthropogenic climate stressors such as ocean acidification. Within the Southern Ocean, Antarctic krill (Euphausia Superba) support many marine predators and play a key role in the biogeochemical cycle. Ocean acidification and plastic pollution have been acknowledged to hinder Antarctic krill development and physiology in singularity, however potential multi-stressor effects of plastic particulates coupled with ocean acidification are unexplored. Furthermore, Antarctic krill may be especially vulnerable to plastic pollution due to their close association with sea-ice, a known plastic sink. Here, we investigate the behaviour of nanoplastic [spherical, aminated (NH2), and yellow-green fluorescent polystyrene nanoparticles] in Antarctic seawater and explore the single and combined effects of nanoplastic (160 nm radius, at a concentration of 2.5 µg ml−1) and ocean acidification (pCO2 ∼900, pHT 7.7) on the embryonic development of Antarctic krill. Gravid female krill were collected in the Atlantic sector of the Southern Ocean (North Scotia Sea). Produced eggs were incubated at 0.5 ◦C in four treatments (control, nanoplastic, ocean acidification and the multi-stressor scenario of nanoplastic presence, and ocean acidification) and their embryonic development after 6 days, at the incubation endpoint, was determined. We observed that negatively charged nanoplastic particles suspended in seawater from the Scotia Sea aggregated to sizes exceeding the nanoscale after 24 h (1054.13 ± 53.49 nm). Further, we found that the proportion of embryos developing through the early stages to reach at least the limb bud stage was highest in the control treatment (21.84%) and lowest in the multi-stressor treatment (13.17%). Since the biological thresholds to any stressors can be altered by the presence of additional stressors, we propose that future nanoplastic ecotoxicology studies should consider the changing global ocean under future climate scenarios for assessments ... |
format |
Article in Journal/Newspaper |
author |
Rowlands, E Galloway, T Cole, MJ Lewis, C Peck, V Thorpe, S Manno, C |
spellingShingle |
Rowlands, E Galloway, T Cole, MJ Lewis, C Peck, V Thorpe, S Manno, C The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill |
author_facet |
Rowlands, E Galloway, T Cole, MJ Lewis, C Peck, V Thorpe, S Manno, C |
author_sort |
Rowlands, E |
title |
The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill |
title_short |
The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill |
title_full |
The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill |
title_fullStr |
The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill |
title_full_unstemmed |
The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill |
title_sort |
effects of combined ocean acidification and nanoplastic exposures on the embryonic development of antarctic krill |
publisher |
Frontiers in Marine Science |
publishDate |
2021 |
url |
http://plymsea.ac.uk/id/eprint/9314/ http://plymsea.ac.uk/id/eprint/9314/1/fmars-08-709763.pdf https://doi.org/10.3389/fmars.2021.709763 |
geographic |
Antarctic Scotia Sea Southern Ocean |
geographic_facet |
Antarctic Scotia Sea Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Ocean acidification Scotia Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Ocean acidification Scotia Sea Sea ice Southern Ocean |
op_relation |
http://plymsea.ac.uk/id/eprint/9314/1/fmars-08-709763.pdf Rowlands, E; Galloway, T; Cole, MJ; Lewis, C; Peck, V; Thorpe, S; Manno, C. 2021 The Effects of Combined Ocean Acidification and Nanoplastic Exposures on the Embryonic Development of Antarctic Krill. Frontiers in Marine Science, 8. https://doi.org/10.3389/fmars.2021.709763 <https://doi.org/10.3389/fmars.2021.709763> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.709763 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
_version_ |
1766265701165694976 |