Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation
UVB alters photosynthetic rate, fatty acid profiles and morphological characteristics of phytoplankton. Copepods, important grazers of primary production, select algal cells based upon their size, morphological traits, nutritional status, and motility. We investigated the grazing rates of the copepo...
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ftpubmed:oai:pubmedcentral.nih.gov:3196560 2023-05-15T15:47:53+02:00 Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation Fields, David M. Durif, Caroline M. F. Bjelland, Reidun M. Shema, Steven D. Skiftesvik, Anne B. Browman, Howard I. 2011-10-18 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3196560 http://www.ncbi.nlm.nih.gov/pubmed/22028858 https://doi.org/10.1371/journal.pone.0026333 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3196560 http://www.ncbi.nlm.nih.gov/pubmed/22028858 http://dx.doi.org/10.1371/journal.pone.0026333 Fields et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2011 ftpubmed https://doi.org/10.1371/journal.pone.0026333 2013-09-03T21:19:58Z UVB alters photosynthetic rate, fatty acid profiles and morphological characteristics of phytoplankton. Copepods, important grazers of primary production, select algal cells based upon their size, morphological traits, nutritional status, and motility. We investigated the grazing rates of the copepod Calanus finmarchicus on the diatom Thalassiosira weissflogii cultured under 3 levels of ultraviolet radiation (UVR): photosynthetically active radiation (PAR) only (4 kJ-m−2/day), and PAR supplemented with UVR radiation at two intensities (24 kJ-m−2/day and 48 kJ-m−2/day). There was no significant difference in grazing rates between the PAR only treatment and the lower UVR treatment. However, grazing rates were significantly (∼66%) higher for copepods feeding on cells treated with the higher level of UVR. These results suggest that a short-term increase in UVR exposure results in a significant increase in the grazing rate of copepods and, thereby, potentially alters the flow rate of organic matter through this component of the ecosystem. Text Calanus finmarchicus Copepods PubMed Central (PMC) PLoS ONE 6 10 e26333 |
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Research Article Fields, David M. Durif, Caroline M. F. Bjelland, Reidun M. Shema, Steven D. Skiftesvik, Anne B. Browman, Howard I. Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation |
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Research Article |
description |
UVB alters photosynthetic rate, fatty acid profiles and morphological characteristics of phytoplankton. Copepods, important grazers of primary production, select algal cells based upon their size, morphological traits, nutritional status, and motility. We investigated the grazing rates of the copepod Calanus finmarchicus on the diatom Thalassiosira weissflogii cultured under 3 levels of ultraviolet radiation (UVR): photosynthetically active radiation (PAR) only (4 kJ-m−2/day), and PAR supplemented with UVR radiation at two intensities (24 kJ-m−2/day and 48 kJ-m−2/day). There was no significant difference in grazing rates between the PAR only treatment and the lower UVR treatment. However, grazing rates were significantly (∼66%) higher for copepods feeding on cells treated with the higher level of UVR. These results suggest that a short-term increase in UVR exposure results in a significant increase in the grazing rate of copepods and, thereby, potentially alters the flow rate of organic matter through this component of the ecosystem. |
format |
Text |
author |
Fields, David M. Durif, Caroline M. F. Bjelland, Reidun M. Shema, Steven D. Skiftesvik, Anne B. Browman, Howard I. |
author_facet |
Fields, David M. Durif, Caroline M. F. Bjelland, Reidun M. Shema, Steven D. Skiftesvik, Anne B. Browman, Howard I. |
author_sort |
Fields, David M. |
title |
Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation |
title_short |
Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation |
title_full |
Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation |
title_fullStr |
Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation |
title_full_unstemmed |
Grazing Rates of Calanus finmarchicus on Thalassiosira weissflogii Cultured under Different Levels of Ultraviolet Radiation |
title_sort |
grazing rates of calanus finmarchicus on thalassiosira weissflogii cultured under different levels of ultraviolet radiation |
publisher |
Public Library of Science |
publishDate |
2011 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3196560 http://www.ncbi.nlm.nih.gov/pubmed/22028858 https://doi.org/10.1371/journal.pone.0026333 |
genre |
Calanus finmarchicus Copepods |
genre_facet |
Calanus finmarchicus Copepods |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3196560 http://www.ncbi.nlm.nih.gov/pubmed/22028858 http://dx.doi.org/10.1371/journal.pone.0026333 |
op_rights |
Fields et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0026333 |
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PLoS ONE |
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6 |
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10 |
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e26333 |
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1766382856397914112 |