Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring
The vertical distribution and in situ egg production of Calanus finmarchicus and C. glacialis were studied in Disko Bay, western Greenland, from winter throughout the spring bloom. The 2 species entered the surface water simultaneously, but their spawning patterns differed significantly. Maximum egg...
Published in: | Marine Ecology Progress Series |
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Language: | English |
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2008
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Online Access: | https://pure.au.dk/portal/en/publications/af54c5fd-56de-4113-a275-2b0b6091bc02 https://doi.org/10.3354/meps07129 https://pure.au.dk/ws/files/76974500/madsen_et_al_2008.pdf http://www.scopus.com/inward/record.url?scp=39349095155&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/af54c5fd-56de-4113-a275-2b0b6091bc02 2024-05-19T07:33:10+00:00 Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring Madsen, Signe Juul Nielsen, Torkel Gissel Tervo, Outi Maria Söderkvist, Johan 2008 application/pdf https://pure.au.dk/portal/en/publications/af54c5fd-56de-4113-a275-2b0b6091bc02 https://doi.org/10.3354/meps07129 https://pure.au.dk/ws/files/76974500/madsen_et_al_2008.pdf http://www.scopus.com/inward/record.url?scp=39349095155&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/en/publications/af54c5fd-56de-4113-a275-2b0b6091bc02 info:eu-repo/semantics/restrictedAccess Madsen , S J , Nielsen , T G , Tervo , O M & Söderkvist , J 2008 , ' Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring ' , Marine Ecology - Progress Series , vol. 353 , pp. 177-190 . https://doi.org/10.3354/meps07129 C. finmarchicus Calanus glaciahs Egg production Spring bloom Starvation article 2008 ftuniaarhuspubl https://doi.org/10.3354/meps07129 2024-05-01T23:44:25Z The vertical distribution and in situ egg production of Calanus finmarchicus and C. glacialis were studied in Disko Bay, western Greenland, from winter throughout the spring bloom. The 2 species entered the surface water simultaneously, but their spawning patterns differed significantly. Maximum egg production for C. glaciahs of 48 ± 8 eggs female -1 d -1 was measured on May 1, 2005 in association with the culmination of the bloom, while the highest egg production rate of C. finmarchicus of 44 ± 7 eggs female -1 d -1 was measured on May 25 after termination of the bloom. During 3 phases of the spring bloom, the impact of starvation and saturating food conditions on the egg production rates of the 2 Calanus species was investigated in the laboratory. Experiments with starved and ad libitum fed females showed a significant difference in the egg production rate between the 2 species, depending on sampling time, i.e. gonad maturity and feeding history. The results showed varying use of saturating food during the 3 phases of the bloom. For C. finmarchicus, no effect of food was observed during the first experiment in late April, whereas females collected in early May, during the peak of the spring bloom, responded strongly to changes in food concentration, with egg production which was 3 times higher than that of the starved controls. In contrast, C. glaciahs responded strongly to food concentration in both late April and early May. The present investigations illustrate that Calanus females from the Disko Bay area continue to produce eggs without food more than twice as long as those reported from other northern populations. This observation could indicate an adaptation to the Disko Bay environment, which has unpredictable ice conditions and consequently large variations in the initiation of the spring bloom. Article in Journal/Newspaper Arctic Arctic Calanus finmarchicus Disko Bay Greenland Aarhus University: Research Marine Ecology Progress Series 353 177 190 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
C. finmarchicus Calanus glaciahs Egg production Spring bloom Starvation |
spellingShingle |
C. finmarchicus Calanus glaciahs Egg production Spring bloom Starvation Madsen, Signe Juul Nielsen, Torkel Gissel Tervo, Outi Maria Söderkvist, Johan Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring |
topic_facet |
C. finmarchicus Calanus glaciahs Egg production Spring bloom Starvation |
description |
The vertical distribution and in situ egg production of Calanus finmarchicus and C. glacialis were studied in Disko Bay, western Greenland, from winter throughout the spring bloom. The 2 species entered the surface water simultaneously, but their spawning patterns differed significantly. Maximum egg production for C. glaciahs of 48 ± 8 eggs female -1 d -1 was measured on May 1, 2005 in association with the culmination of the bloom, while the highest egg production rate of C. finmarchicus of 44 ± 7 eggs female -1 d -1 was measured on May 25 after termination of the bloom. During 3 phases of the spring bloom, the impact of starvation and saturating food conditions on the egg production rates of the 2 Calanus species was investigated in the laboratory. Experiments with starved and ad libitum fed females showed a significant difference in the egg production rate between the 2 species, depending on sampling time, i.e. gonad maturity and feeding history. The results showed varying use of saturating food during the 3 phases of the bloom. For C. finmarchicus, no effect of food was observed during the first experiment in late April, whereas females collected in early May, during the peak of the spring bloom, responded strongly to changes in food concentration, with egg production which was 3 times higher than that of the starved controls. In contrast, C. glaciahs responded strongly to food concentration in both late April and early May. The present investigations illustrate that Calanus females from the Disko Bay area continue to produce eggs without food more than twice as long as those reported from other northern populations. This observation could indicate an adaptation to the Disko Bay environment, which has unpredictable ice conditions and consequently large variations in the initiation of the spring bloom. |
format |
Article in Journal/Newspaper |
author |
Madsen, Signe Juul Nielsen, Torkel Gissel Tervo, Outi Maria Söderkvist, Johan |
author_facet |
Madsen, Signe Juul Nielsen, Torkel Gissel Tervo, Outi Maria Söderkvist, Johan |
author_sort |
Madsen, Signe Juul |
title |
Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring |
title_short |
Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring |
title_full |
Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring |
title_fullStr |
Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring |
title_full_unstemmed |
Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring |
title_sort |
importance of feeding for egg production in calanus finmarchicus and c. glacialis during the arctic spring |
publishDate |
2008 |
url |
https://pure.au.dk/portal/en/publications/af54c5fd-56de-4113-a275-2b0b6091bc02 https://doi.org/10.3354/meps07129 https://pure.au.dk/ws/files/76974500/madsen_et_al_2008.pdf http://www.scopus.com/inward/record.url?scp=39349095155&partnerID=8YFLogxK |
genre |
Arctic Arctic Calanus finmarchicus Disko Bay Greenland |
genre_facet |
Arctic Arctic Calanus finmarchicus Disko Bay Greenland |
op_source |
Madsen , S J , Nielsen , T G , Tervo , O M & Söderkvist , J 2008 , ' Importance of feeding for egg production in Calanus finmarchicus and C. glacialis during the Arctic spring ' , Marine Ecology - Progress Series , vol. 353 , pp. 177-190 . https://doi.org/10.3354/meps07129 |
op_relation |
https://pure.au.dk/portal/en/publications/af54c5fd-56de-4113-a275-2b0b6091bc02 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.3354/meps07129 |
container_title |
Marine Ecology Progress Series |
container_volume |
353 |
container_start_page |
177 |
op_container_end_page |
190 |
_version_ |
1799471288805228544 |