Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean
The role of zooplankton grazing on dimethylsulfide (DMS) and dissolved dimethylsulfoniopropionate (DMSP d ) production was investigated in the Antarctic Ocean in January and February 2002. Dominant herbivorous macrozooplankton of this region, the Antarctic krill Euphausia superba and the tunicate Sa...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/f04-072 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-072 |
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crcansciencepubl:10.1139/f04-072 2023-12-17T10:19:07+01:00 Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean Kasamatsu, Nobue Kawaguchi, So Watanabe, Shuichi Odate, Tsuneo Fukuchi, Mitsuo 2004 http://dx.doi.org/10.1139/f04-072 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-072 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 5, page 736-743 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2004 crcansciencepubl https://doi.org/10.1139/f04-072 2023-11-19T13:39:20Z The role of zooplankton grazing on dimethylsulfide (DMS) and dissolved dimethylsulfoniopropionate (DMSP d ) production was investigated in the Antarctic Ocean in January and February 2002. Dominant herbivorous macrozooplankton of this region, the Antarctic krill Euphausia superba and the tunicate Salpa thompsoni, were used in shipboard incubation experiments. The concentration of DMSP d + DMS increased in the water during incubation with krill. The production rate was 2.96 ± 2.78 nmol DMSP d + DMS·krill 1 ·h 1 (mean ± SD). In addition, the DMSP d + DMS production rate was linearly related to the ingestion rate of krill (r 2 = 0.664, p ≤ 0.01). Addition of salps to natural surface water, however, did not change the DMSP d + DMS concentrations. During the experiments, both animals fed on phytoplankton cells. The fecal pellets of krill contained broken phytoplankton cells, whereas those of salps contained unbroken cells. These results suggest that sloppy feeding by krill is a more likely mechanism for producing DMS and DMSP d than the direct ingestion of phytoplankton cells by salps. The decrease of DMS concentrations in the upper 200 m of the water column from January to February may be explained, in part, by changes in the composition of the macrozooplankton community. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Ocean Euphausia superba Canadian Science Publishing (via Crossref) Antarctic The Antarctic Antarctic Ocean Canadian Journal of Fisheries and Aquatic Sciences 61 5 736 743 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Kasamatsu, Nobue Kawaguchi, So Watanabe, Shuichi Odate, Tsuneo Fukuchi, Mitsuo Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
The role of zooplankton grazing on dimethylsulfide (DMS) and dissolved dimethylsulfoniopropionate (DMSP d ) production was investigated in the Antarctic Ocean in January and February 2002. Dominant herbivorous macrozooplankton of this region, the Antarctic krill Euphausia superba and the tunicate Salpa thompsoni, were used in shipboard incubation experiments. The concentration of DMSP d + DMS increased in the water during incubation with krill. The production rate was 2.96 ± 2.78 nmol DMSP d + DMS·krill 1 ·h 1 (mean ± SD). In addition, the DMSP d + DMS production rate was linearly related to the ingestion rate of krill (r 2 = 0.664, p ≤ 0.01). Addition of salps to natural surface water, however, did not change the DMSP d + DMS concentrations. During the experiments, both animals fed on phytoplankton cells. The fecal pellets of krill contained broken phytoplankton cells, whereas those of salps contained unbroken cells. These results suggest that sloppy feeding by krill is a more likely mechanism for producing DMS and DMSP d than the direct ingestion of phytoplankton cells by salps. The decrease of DMS concentrations in the upper 200 m of the water column from January to February may be explained, in part, by changes in the composition of the macrozooplankton community. |
format |
Article in Journal/Newspaper |
author |
Kasamatsu, Nobue Kawaguchi, So Watanabe, Shuichi Odate, Tsuneo Fukuchi, Mitsuo |
author_facet |
Kasamatsu, Nobue Kawaguchi, So Watanabe, Shuichi Odate, Tsuneo Fukuchi, Mitsuo |
author_sort |
Kasamatsu, Nobue |
title |
Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean |
title_short |
Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean |
title_full |
Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean |
title_fullStr |
Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean |
title_full_unstemmed |
Possible impacts of zooplankton grazing on dimethylsulfide production in the Antarctic Ocean |
title_sort |
possible impacts of zooplankton grazing on dimethylsulfide production in the antarctic ocean |
publisher |
Canadian Science Publishing |
publishDate |
2004 |
url |
http://dx.doi.org/10.1139/f04-072 http://www.nrcresearchpress.com/doi/pdf/10.1139/f04-072 |
geographic |
Antarctic The Antarctic Antarctic Ocean |
geographic_facet |
Antarctic The Antarctic Antarctic Ocean |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Ocean Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Ocean Euphausia superba |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 61, issue 5, page 736-743 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f04-072 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
61 |
container_issue |
5 |
container_start_page |
736 |
op_container_end_page |
743 |
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1785581259200659456 |