The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica
A unique characteristic of the pelagic Antarctic silverfish Pleuragramma antarctica is the massive accumulation and storage of lipids in special oil sacs. The enormous lipid deposition beyond 50% of body dry mass functions primarily as buoyancy aid compensating for the missing swim bladder in these...
Main Authors: | , |
---|---|
Other Authors: | , , |
Format: | Book Part |
Language: | unknown |
Published: |
Springer International Publishing AG
2017
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/45381/ https://hdl.handle.net/10013/epic.51521 |
id |
ftawi:oai:epic.awi.de:45381 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:45381 2023-05-15T13:45:21+02:00 The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica Hagen, W. Kattner, Gerhard Vacchi, M. Pisano, E. Ghigliotti, L. 2017 https://epic.awi.de/id/eprint/45381/ https://hdl.handle.net/10013/epic.51521 unknown Springer International Publishing AG Hagen, W. and Kattner, G. (2017) The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica / M. Vacchi , E. Pisano and L. Ghigliotti (editors) , In: The Antarctic Silverfish: a Keystone Species in a Changing Ecosystem, Advances in Polar Ecology, Volume 3, Switzerland, Springer International Publishing AG, 17 p., ISBN: 2468-5712 . doi:10.1007/978-3-319-55893-6_7 <https://doi.org/10.1007/978-3-319-55893-6_7> , hdl:10013/epic.51521 EPIC3The Antarctic Silverfish: a Keystone Species in a Changing Ecosystem, Advances in Polar Ecology, Volume 3, Switzerland, Springer International Publishing AG, 17 p., pp. 131-148, ISBN: 2468-5712 Inbook peerRev 2017 ftawi https://doi.org/10.1007/978-3-319-55893-6_7 2021-12-24T15:43:14Z A unique characteristic of the pelagic Antarctic silverfish Pleuragramma antarctica is the massive accumulation and storage of lipids in special oil sacs. The enormous lipid deposition beyond 50% of body dry mass functions primarily as buoyancy aid compensating for the missing swim bladder in these fishes, although the depot lipids could also serve as energy reserves. The lipid signature clearly reflects the life cycle of P. antarctica. Trophic marker fatty acids of the early larval and post-larval stages reveal feeding preferences on phyto- and zooplankton, mainly copepods, which these stages utilize for rapid somatic growth without special lipid storage. The juvenile stages tend to feed on calanoid copepods, while the adults shift to krill (Euphausia superba, E. crystallorophias) as major food items. The findings from fatty acid trophic markers are in accordance with gut content analyses. Juveniles to adults exhibit a pronounced lipid deposition, namely triacylglycerols, in the oil sacs. These triacylglycerols are composed of unmodified dietary fatty acids, but may also partially be synthesized de novo. This substantial lipid accumulation not only represents a key adaptation of P. antarctica to life in the pelagic realm. It is also of major importance as high-quality and high-energy food for other marine vertebrates such as seabirds and seals and ultimately ensures an efficient energy flow through the lipid-based high-Antarctic food web. Book Part Antarc* Antarctic Antarctic silverfish Antarctica Euphausia superba Copepods Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic 131 148 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
A unique characteristic of the pelagic Antarctic silverfish Pleuragramma antarctica is the massive accumulation and storage of lipids in special oil sacs. The enormous lipid deposition beyond 50% of body dry mass functions primarily as buoyancy aid compensating for the missing swim bladder in these fishes, although the depot lipids could also serve as energy reserves. The lipid signature clearly reflects the life cycle of P. antarctica. Trophic marker fatty acids of the early larval and post-larval stages reveal feeding preferences on phyto- and zooplankton, mainly copepods, which these stages utilize for rapid somatic growth without special lipid storage. The juvenile stages tend to feed on calanoid copepods, while the adults shift to krill (Euphausia superba, E. crystallorophias) as major food items. The findings from fatty acid trophic markers are in accordance with gut content analyses. Juveniles to adults exhibit a pronounced lipid deposition, namely triacylglycerols, in the oil sacs. These triacylglycerols are composed of unmodified dietary fatty acids, but may also partially be synthesized de novo. This substantial lipid accumulation not only represents a key adaptation of P. antarctica to life in the pelagic realm. It is also of major importance as high-quality and high-energy food for other marine vertebrates such as seabirds and seals and ultimately ensures an efficient energy flow through the lipid-based high-Antarctic food web. |
author2 |
Vacchi, M. Pisano, E. Ghigliotti, L. |
format |
Book Part |
author |
Hagen, W. Kattner, Gerhard |
spellingShingle |
Hagen, W. Kattner, Gerhard The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica |
author_facet |
Hagen, W. Kattner, Gerhard |
author_sort |
Hagen, W. |
title |
The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica |
title_short |
The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica |
title_full |
The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica |
title_fullStr |
The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica |
title_full_unstemmed |
The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica |
title_sort |
role of lipids in the life history of the antarctic silverfish pleuragramma antarctica |
publisher |
Springer International Publishing AG |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/45381/ https://hdl.handle.net/10013/epic.51521 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctic silverfish Antarctica Euphausia superba Copepods |
genre_facet |
Antarc* Antarctic Antarctic silverfish Antarctica Euphausia superba Copepods |
op_source |
EPIC3The Antarctic Silverfish: a Keystone Species in a Changing Ecosystem, Advances in Polar Ecology, Volume 3, Switzerland, Springer International Publishing AG, 17 p., pp. 131-148, ISBN: 2468-5712 |
op_relation |
Hagen, W. and Kattner, G. (2017) The Role of Lipids in the Life History of the Antarctic Silverfish Pleuragramma antarctica / M. Vacchi , E. Pisano and L. Ghigliotti (editors) , In: The Antarctic Silverfish: a Keystone Species in a Changing Ecosystem, Advances in Polar Ecology, Volume 3, Switzerland, Springer International Publishing AG, 17 p., ISBN: 2468-5712 . doi:10.1007/978-3-319-55893-6_7 <https://doi.org/10.1007/978-3-319-55893-6_7> , hdl:10013/epic.51521 |
op_doi |
https://doi.org/10.1007/978-3-319-55893-6_7 |
container_start_page |
131 |
op_container_end_page |
148 |
_version_ |
1766220939604787200 |