Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom
We present concurrent data on ingestion, egg production and the loss of maternal biomass in pre-spring bloom female Calanus finmarchicus incubated under conditions representative of those in situ in the North Atlantic. A balanced metabolic budget was constructed and used to examine the relative impo...
Published in: | Journal of Marine Systems |
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2009
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Online Access: | https://eprints.soton.ac.uk/69195/ |
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ftsouthampton:oai:eprints.soton.ac.uk:69195 2023-07-30T04:02:45+02:00 Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom Mayor, Daniel J. Anderson, Thomas R. Pond, David W. Irigoien, Xabier 2009-11 https://eprints.soton.ac.uk/69195/ unknown Mayor, Daniel J., Anderson, Thomas R., Pond, David W. and Irigoien, Xabier (2009) Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom. Journal of Marine Systems, 78 (4), 505-510. (doi:10.1016/j.jmarsys.2008.12.019 <http://dx.doi.org/10.1016/j.jmarsys.2008.12.019>). Article PeerReviewed 2009 ftsouthampton https://doi.org/10.1016/j.jmarsys.2008.12.019 2023-07-09T21:06:35Z We present concurrent data on ingestion, egg production and the loss of maternal biomass in pre-spring bloom female Calanus finmarchicus incubated under conditions representative of those in situ in the North Atlantic. A balanced metabolic budget was constructed and used to examine the relative importance of ingestion and biomass for fuelling egg production during the incubations. Ingested carbon was not sufficient to meet the observed demands for egg production. More than 80% of the carbon utilised by the females was instead derived from their biomass. Fatty acid analysis demonstrated that the storage reserves, 20:1 (n?9) and 22:1 (n?11), were virtually absent before experimentation began, and therefore could not have been used to supply the carbon required for egg production during the incubations. The C:N mass-specific ratio of the biomass utilised was 4.1, suggesting that the females had instead catabolised protein in order to meet their metabolic demands. These results suggest that C. finmarchicus adopts a sacrificial reproductive strategy when food availability is low. Article in Journal/Newspaper Calanus finmarchicus North Atlantic University of Southampton: e-Prints Soton Journal of Marine Systems 78 4 505 510 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
unknown |
description |
We present concurrent data on ingestion, egg production and the loss of maternal biomass in pre-spring bloom female Calanus finmarchicus incubated under conditions representative of those in situ in the North Atlantic. A balanced metabolic budget was constructed and used to examine the relative importance of ingestion and biomass for fuelling egg production during the incubations. Ingested carbon was not sufficient to meet the observed demands for egg production. More than 80% of the carbon utilised by the females was instead derived from their biomass. Fatty acid analysis demonstrated that the storage reserves, 20:1 (n?9) and 22:1 (n?11), were virtually absent before experimentation began, and therefore could not have been used to supply the carbon required for egg production during the incubations. The C:N mass-specific ratio of the biomass utilised was 4.1, suggesting that the females had instead catabolised protein in order to meet their metabolic demands. These results suggest that C. finmarchicus adopts a sacrificial reproductive strategy when food availability is low. |
format |
Article in Journal/Newspaper |
author |
Mayor, Daniel J. Anderson, Thomas R. Pond, David W. Irigoien, Xabier |
spellingShingle |
Mayor, Daniel J. Anderson, Thomas R. Pond, David W. Irigoien, Xabier Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom |
author_facet |
Mayor, Daniel J. Anderson, Thomas R. Pond, David W. Irigoien, Xabier |
author_sort |
Mayor, Daniel J. |
title |
Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom |
title_short |
Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom |
title_full |
Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom |
title_fullStr |
Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom |
title_full_unstemmed |
Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom |
title_sort |
egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in calanus finmarchicus before the spring bloom |
publishDate |
2009 |
url |
https://eprints.soton.ac.uk/69195/ |
genre |
Calanus finmarchicus North Atlantic |
genre_facet |
Calanus finmarchicus North Atlantic |
op_relation |
Mayor, Daniel J., Anderson, Thomas R., Pond, David W. and Irigoien, Xabier (2009) Egg production and associated losses of carbon, nitrogen and fatty acids from maternal biomass in Calanus finmarchicus before the spring bloom. Journal of Marine Systems, 78 (4), 505-510. (doi:10.1016/j.jmarsys.2008.12.019 <http://dx.doi.org/10.1016/j.jmarsys.2008.12.019>). |
op_doi |
https://doi.org/10.1016/j.jmarsys.2008.12.019 |
container_title |
Journal of Marine Systems |
container_volume |
78 |
container_issue |
4 |
container_start_page |
505 |
op_container_end_page |
510 |
_version_ |
1772813579927420928 |