Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies
Lipid content, lipid class and fatty acid composition of four Southern Ocean cephalopod species – the myopsid Sepioteuthis australis and three oegopsids, Gonatus antarcticus , Moroteuthis robsoni and Todarodes spp. – were analysed. The lipid content of the digestive gland was consistently greater th...
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Cambridge University Press
2002
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Online Access: | https://oceanrep.geomar.de/id/eprint/53401/ https://oceanrep.geomar.de/id/eprint/53401/1/4102.pdf https://doi.org/10.1017/S0954102002000044 |
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ftoceanrep:oai:oceanrep.geomar.de:53401 2023-05-15T14:00:49+02:00 Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies Phillips, Katrina L. Nichols, Peter D. Jackson, George D. 2002-09-14 text https://oceanrep.geomar.de/id/eprint/53401/ https://oceanrep.geomar.de/id/eprint/53401/1/4102.pdf https://doi.org/10.1017/S0954102002000044 en eng Cambridge University Press https://oceanrep.geomar.de/id/eprint/53401/1/4102.pdf Phillips, K. L., Nichols, P. D. and Jackson, G. D. (2002) Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies. Antarctic Science, 14 (3). pp. 212-220. DOI 10.1017/S0954102002000044 <https://doi.org/10.1017/S0954102002000044>. doi:10.1017/S0954102002000044 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2002 ftoceanrep https://doi.org/10.1017/S0954102002000044 2023-04-07T15:57:35Z Lipid content, lipid class and fatty acid composition of four Southern Ocean cephalopod species – the myopsid Sepioteuthis australis and three oegopsids, Gonatus antarcticus , Moroteuthis robsoni and Todarodes spp. – were analysed. The lipid content of the digestive gland was consistently greater than that of the mantle, and was an order of magnitude greater in oegopsid species. The lipid class and fatty acid composition of the mantle and digestive gland also differed markedly in each species. Digestive gland lipid is likely to be of dietary origin, and large amounts of lipid in the digestive gland of oegopsids may accumulate over time. Thus the digestive gland is a rich source of fatty acid dietary tracers and may provide a history of dietary intake. However, the absolute amount of dietary lipid in the digestive gland of oegopsid species exceeds the absolute lipid content of mantle tissue. Therefore the overall lipid “signature” of an oegopsid may more closely resemble its prey species rather than its mantle tissue. When lipid techniques are used in dietary analysis of teuthophagous predators, squid may not be represented by a unique signature in analyses and their importance in the diets of predators may be underestimated. Article in Journal/Newspaper Antarc* Antarctic Science antarcticus Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Southern Ocean Antarctic Science 14 3 212 220 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Lipid content, lipid class and fatty acid composition of four Southern Ocean cephalopod species – the myopsid Sepioteuthis australis and three oegopsids, Gonatus antarcticus , Moroteuthis robsoni and Todarodes spp. – were analysed. The lipid content of the digestive gland was consistently greater than that of the mantle, and was an order of magnitude greater in oegopsid species. The lipid class and fatty acid composition of the mantle and digestive gland also differed markedly in each species. Digestive gland lipid is likely to be of dietary origin, and large amounts of lipid in the digestive gland of oegopsids may accumulate over time. Thus the digestive gland is a rich source of fatty acid dietary tracers and may provide a history of dietary intake. However, the absolute amount of dietary lipid in the digestive gland of oegopsid species exceeds the absolute lipid content of mantle tissue. Therefore the overall lipid “signature” of an oegopsid may more closely resemble its prey species rather than its mantle tissue. When lipid techniques are used in dietary analysis of teuthophagous predators, squid may not be represented by a unique signature in analyses and their importance in the diets of predators may be underestimated. |
format |
Article in Journal/Newspaper |
author |
Phillips, Katrina L. Nichols, Peter D. Jackson, George D. |
spellingShingle |
Phillips, Katrina L. Nichols, Peter D. Jackson, George D. Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies |
author_facet |
Phillips, Katrina L. Nichols, Peter D. Jackson, George D. |
author_sort |
Phillips, Katrina L. |
title |
Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies |
title_short |
Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies |
title_full |
Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies |
title_fullStr |
Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies |
title_full_unstemmed |
Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies |
title_sort |
lipid and fatty acid composition of the mantle and digestive gland of four southern ocean squid species: implications for food-web studies |
publisher |
Cambridge University Press |
publishDate |
2002 |
url |
https://oceanrep.geomar.de/id/eprint/53401/ https://oceanrep.geomar.de/id/eprint/53401/1/4102.pdf https://doi.org/10.1017/S0954102002000044 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Antarc* Antarctic Science antarcticus Southern Ocean |
genre_facet |
Antarc* Antarctic Science antarcticus Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/53401/1/4102.pdf Phillips, K. L., Nichols, P. D. and Jackson, G. D. (2002) Lipid and fatty acid composition of the mantle and digestive gland of four Southern Ocean squid species: implications for food-web studies. Antarctic Science, 14 (3). pp. 212-220. DOI 10.1017/S0954102002000044 <https://doi.org/10.1017/S0954102002000044>. doi:10.1017/S0954102002000044 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1017/S0954102002000044 |
container_title |
Antarctic Science |
container_volume |
14 |
container_issue |
3 |
container_start_page |
212 |
op_container_end_page |
220 |
_version_ |
1766270162220089344 |