Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf
Abstract Madsen, M. L., Gaard, E., and Hansen, B. W. 2008. Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf. – ICES Journal of Marine Science, 65: 1112–1121. Time of ascendance and initiation of reproduction in Calanus finmarc...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsn097 http://academic.oup.com/icesjms/article-pdf/65/7/1112/29130620/fsn097.pdf |
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croxfordunivpr:10.1093/icesjms/fsn097 2023-05-15T15:47:52+02:00 Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf Madsen, Matias L. Gaard, Eilif Hansen, Benni W. 2008 http://dx.doi.org/10.1093/icesjms/fsn097 http://academic.oup.com/icesjms/article-pdf/65/7/1112/29130620/fsn097.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 65, issue 7, page 1112-1121 ISSN 1095-9289 1054-3139 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2008 croxfordunivpr https://doi.org/10.1093/icesjms/fsn097 2022-12-29T15:39:28Z Abstract Madsen, M. L., Gaard, E., and Hansen, B. W. 2008. Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf. – ICES Journal of Marine Science, 65: 1112–1121. Time of ascendance and initiation of reproduction in Calanus finmarchicus is closely correlated with the phytoplankton spring bloom. However, significant egg production can take place before the bloom, fuelled by mobilizing stored wax-ester lipids. Calanus finmarchicus from stations on the Faroe Shelf were compared with specimens collected off the shelf. Biological parameters such as gut contents, egg production, developmental stage, and lipid content were determined and correlated with phytoplankton concentration and spatial distribution along two transects in late April 2003 across the shelf northeast and southwest of the Faroe Islands. Grazing by C. finmarchicus on phytoplankton was significantly lower northeast of the Faroe plateau. However, the egg production was generally high for a pre-bloom situation, with significantly higher rates of egg production on the shelf than off it, along both transects. Wax-ester content of female C. finmarchicus was significantly higher and more variable at off-shelf stations than on the shelf (<2 µg female−1). From this, we suggest that off-shelf C. finmarchicus had recently emerged from overwintering depths, in contrast to individuals from stations on the shelf, which had been in the upper water masses for some time. Females (from off-shelf stations) most likely supported the initial egg production from their wax-ester reserves. Article in Journal/Newspaper Calanus finmarchicus Faroe Islands Oxford University Press (via Crossref) Faroe Islands Faroe Shelf ENVELOPE(-6.000,-6.000,62.000,62.000) ICES Journal of Marine Science 65 7 1112 1121 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Madsen, Matias L. Gaard, Eilif Hansen, Benni W. Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Madsen, M. L., Gaard, E., and Hansen, B. W. 2008. Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf. – ICES Journal of Marine Science, 65: 1112–1121. Time of ascendance and initiation of reproduction in Calanus finmarchicus is closely correlated with the phytoplankton spring bloom. However, significant egg production can take place before the bloom, fuelled by mobilizing stored wax-ester lipids. Calanus finmarchicus from stations on the Faroe Shelf were compared with specimens collected off the shelf. Biological parameters such as gut contents, egg production, developmental stage, and lipid content were determined and correlated with phytoplankton concentration and spatial distribution along two transects in late April 2003 across the shelf northeast and southwest of the Faroe Islands. Grazing by C. finmarchicus on phytoplankton was significantly lower northeast of the Faroe plateau. However, the egg production was generally high for a pre-bloom situation, with significantly higher rates of egg production on the shelf than off it, along both transects. Wax-ester content of female C. finmarchicus was significantly higher and more variable at off-shelf stations than on the shelf (<2 µg female−1). From this, we suggest that off-shelf C. finmarchicus had recently emerged from overwintering depths, in contrast to individuals from stations on the shelf, which had been in the upper water masses for some time. Females (from off-shelf stations) most likely supported the initial egg production from their wax-ester reserves. |
format |
Article in Journal/Newspaper |
author |
Madsen, Matias L. Gaard, Eilif Hansen, Benni W. |
author_facet |
Madsen, Matias L. Gaard, Eilif Hansen, Benni W. |
author_sort |
Madsen, Matias L. |
title |
Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf |
title_short |
Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf |
title_full |
Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf |
title_fullStr |
Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf |
title_full_unstemmed |
Wax-ester mobilization by female Calanus finmarchicus (Gunnerus) during spring ascendance and advection to the Faroe Shelf |
title_sort |
wax-ester mobilization by female calanus finmarchicus (gunnerus) during spring ascendance and advection to the faroe shelf |
publisher |
Oxford University Press (OUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1093/icesjms/fsn097 http://academic.oup.com/icesjms/article-pdf/65/7/1112/29130620/fsn097.pdf |
long_lat |
ENVELOPE(-6.000,-6.000,62.000,62.000) |
geographic |
Faroe Islands Faroe Shelf |
geographic_facet |
Faroe Islands Faroe Shelf |
genre |
Calanus finmarchicus Faroe Islands |
genre_facet |
Calanus finmarchicus Faroe Islands |
op_source |
ICES Journal of Marine Science volume 65, issue 7, page 1112-1121 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsn097 |
container_title |
ICES Journal of Marine Science |
container_volume |
65 |
container_issue |
7 |
container_start_page |
1112 |
op_container_end_page |
1121 |
_version_ |
1766382821563170816 |