Early development of Calanus hyperboreus nauplii: Response to a changing ocean
To forecast effects of temperature changes on recruitment and population dynamics of the Arctic copepod Calanus hyperboreus, laboratory experiments investigating temperature and food effects on early development were performed in Disko Bay, western Greenland, in 2009, and ascent rates of C. hyperbor...
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Online Access: | https://doi.org/10.4319/lo.2013.58.6.2109 |
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ftzenodo:oai:zenodo.org:7658 2024-09-15T17:52:29+00:00 Early development of Calanus hyperboreus nauplii: Response to a changing ocean Jung-Madsen, Signe Nielsen, Torkel Gissel Grønkjær, Peter Hansen, Benni Winding Møller, Eva Friis 2013-01-01 https://doi.org/10.4319/lo.2013.58.6.2109 unknown Zenodo https://doi.org/10.4319/lo.2013.58.6.2109 https://zenodo.org/communities/euro-basin https://zenodo.org/communities/eu oai:zenodo.org:7658 info:eu-repo/semantics/openAccess Other (Attribution) Limnology and Oceanography, 58(6), 2109-2121, (2013-01-01) info:eu-repo/semantics/article 2013 ftzenodo https://doi.org/10.4319/lo.2013.58.6.2109 2024-07-27T06:11:58Z To forecast effects of temperature changes on recruitment and population dynamics of the Arctic copepod Calanus hyperboreus, laboratory experiments investigating temperature and food effects on early development were performed in Disko Bay, western Greenland, in 2009, and ascent rates of C. hyperboreus eggs collected in east Greenland were measured in the laboratory. Ascent rates were highly variable both between and within clutches, ranging from 0.7 to 27.7m d−1, suggesting variability in the biochemical composition of the egg. Development of eggs were investigated between 0.8°C and 6.6°C, and hatching was fitted to a Belěhrádek temperature function ( r 2 > 0.99) with mean development time (MDT) of eggs ranging from 2.8 to 5.8d. MDT of fed and starved nauplii was calculated for nauplii raised at 5°C. Fed nauplii developed through the first five nauplius stages (N1–N5) during 40d of incubation, whereas development of starved nauplii ceased at N3. Nauplii were able to survive at least 30d of starvation. Respiration rate was measured for N1 and N3 at 0°C, 5°C, and 10°C, and it increased with development stage and temperature from 0.05 ± 0.01 to 0.29 ± 0.08nmol O2 nauplii−1h−1 for N1 at 0°C and N3 at 10°C, respectively. A decrease in carbon and lipid content from egg to N3 indicates that nauplii are using stored lipids to cover their metabolic costs during the nonfeeding stages. Early stages of C. hyperboreus seem more affected by temperature than later stages, a vulnerability that might affect future recruitment. Article in Journal/Newspaper Arctic copepod Calanus hyperboreus Disko Bay East Greenland Greenland Zenodo Limnology and Oceanography 58 6 2109 2121 |
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To forecast effects of temperature changes on recruitment and population dynamics of the Arctic copepod Calanus hyperboreus, laboratory experiments investigating temperature and food effects on early development were performed in Disko Bay, western Greenland, in 2009, and ascent rates of C. hyperboreus eggs collected in east Greenland were measured in the laboratory. Ascent rates were highly variable both between and within clutches, ranging from 0.7 to 27.7m d−1, suggesting variability in the biochemical composition of the egg. Development of eggs were investigated between 0.8°C and 6.6°C, and hatching was fitted to a Belěhrádek temperature function ( r 2 > 0.99) with mean development time (MDT) of eggs ranging from 2.8 to 5.8d. MDT of fed and starved nauplii was calculated for nauplii raised at 5°C. Fed nauplii developed through the first five nauplius stages (N1–N5) during 40d of incubation, whereas development of starved nauplii ceased at N3. Nauplii were able to survive at least 30d of starvation. Respiration rate was measured for N1 and N3 at 0°C, 5°C, and 10°C, and it increased with development stage and temperature from 0.05 ± 0.01 to 0.29 ± 0.08nmol O2 nauplii−1h−1 for N1 at 0°C and N3 at 10°C, respectively. A decrease in carbon and lipid content from egg to N3 indicates that nauplii are using stored lipids to cover their metabolic costs during the nonfeeding stages. Early stages of C. hyperboreus seem more affected by temperature than later stages, a vulnerability that might affect future recruitment. |
format |
Article in Journal/Newspaper |
author |
Jung-Madsen, Signe Nielsen, Torkel Gissel Grønkjær, Peter Hansen, Benni Winding Møller, Eva Friis |
spellingShingle |
Jung-Madsen, Signe Nielsen, Torkel Gissel Grønkjær, Peter Hansen, Benni Winding Møller, Eva Friis Early development of Calanus hyperboreus nauplii: Response to a changing ocean |
author_facet |
Jung-Madsen, Signe Nielsen, Torkel Gissel Grønkjær, Peter Hansen, Benni Winding Møller, Eva Friis |
author_sort |
Jung-Madsen, Signe |
title |
Early development of Calanus hyperboreus nauplii: Response to a changing ocean |
title_short |
Early development of Calanus hyperboreus nauplii: Response to a changing ocean |
title_full |
Early development of Calanus hyperboreus nauplii: Response to a changing ocean |
title_fullStr |
Early development of Calanus hyperboreus nauplii: Response to a changing ocean |
title_full_unstemmed |
Early development of Calanus hyperboreus nauplii: Response to a changing ocean |
title_sort |
early development of calanus hyperboreus nauplii: response to a changing ocean |
publisher |
Zenodo |
publishDate |
2013 |
url |
https://doi.org/10.4319/lo.2013.58.6.2109 |
genre |
Arctic copepod Calanus hyperboreus Disko Bay East Greenland Greenland |
genre_facet |
Arctic copepod Calanus hyperboreus Disko Bay East Greenland Greenland |
op_source |
Limnology and Oceanography, 58(6), 2109-2121, (2013-01-01) |
op_relation |
https://doi.org/10.4319/lo.2013.58.6.2109 https://zenodo.org/communities/euro-basin https://zenodo.org/communities/eu oai:zenodo.org:7658 |
op_rights |
info:eu-repo/semantics/openAccess Other (Attribution) |
op_doi |
https://doi.org/10.4319/lo.2013.58.6.2109 |
container_title |
Limnology and Oceanography |
container_volume |
58 |
container_issue |
6 |
container_start_page |
2109 |
op_container_end_page |
2121 |
_version_ |
1810294503905427456 |