Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages
Abstract The aim of this study was to clarify the trophic patterns of the key species Pleuragramma antarctica in the Dumont d’Urville Sea, through its development and possible changes according to sampling locations. Variability in diet composition of larvae, juvenile and adult P. antarctica was ana...
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crcambridgeupr:10.1017/s0954102015000036 2024-03-03T08:38:31+00:00 Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages Giraldo, Carolina Mayzaud, Patrick Tavernier, Eric Boutoute, Marc Penot, Florian Koubbi, Philippe 2015 http://dx.doi.org/10.1017/s0954102015000036 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102015000036 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 27, issue 5, page 429-438 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2015 crcambridgeupr https://doi.org/10.1017/s0954102015000036 2024-02-08T08:41:46Z Abstract The aim of this study was to clarify the trophic patterns of the key species Pleuragramma antarctica in the Dumont d’Urville Sea, through its development and possible changes according to sampling locations. Variability in diet composition of larvae, juvenile and adult P. antarctica was analysed using fatty acid markers. Analysis of lipid class in P. antarctica reflected lipid accumulation with increasing size at all sampling stations. The fatty acid composition of triacylglycerol highlighted ontogenetic changes in the diet. Phytoplankton markers, such as C16PUFA:C16 and EPA:DHA ratios >1, and carnivorous markers in larvae suggested an omnivorous diet. Comparison between the fatty acid signature of P. antarctica older stages (juveniles and adults) and zooplankton species using OPLS-discriminant analysis indicated that juveniles fed mainly on euphausiid larvae and to a minor extent on copepods, and confirmed that non-herbivorous copepods were the main prey for adults. Our results suggest that different feeding patterns and a generalist strategy in P. antarctica with juveniles feeding on bigger prey than adults, probably as a result of prey availability according to their vertical segregation pattern. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica D’Urville Sea Copepods Cambridge University Press Dumont d’Urville ENVELOPE(140.000,140.000,-66.667,-66.667) Antarctic Science 27 5 429 438 |
institution |
Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Giraldo, Carolina Mayzaud, Patrick Tavernier, Eric Boutoute, Marc Penot, Florian Koubbi, Philippe Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract The aim of this study was to clarify the trophic patterns of the key species Pleuragramma antarctica in the Dumont d’Urville Sea, through its development and possible changes according to sampling locations. Variability in diet composition of larvae, juvenile and adult P. antarctica was analysed using fatty acid markers. Analysis of lipid class in P. antarctica reflected lipid accumulation with increasing size at all sampling stations. The fatty acid composition of triacylglycerol highlighted ontogenetic changes in the diet. Phytoplankton markers, such as C16PUFA:C16 and EPA:DHA ratios >1, and carnivorous markers in larvae suggested an omnivorous diet. Comparison between the fatty acid signature of P. antarctica older stages (juveniles and adults) and zooplankton species using OPLS-discriminant analysis indicated that juveniles fed mainly on euphausiid larvae and to a minor extent on copepods, and confirmed that non-herbivorous copepods were the main prey for adults. Our results suggest that different feeding patterns and a generalist strategy in P. antarctica with juveniles feeding on bigger prey than adults, probably as a result of prey availability according to their vertical segregation pattern. |
format |
Article in Journal/Newspaper |
author |
Giraldo, Carolina Mayzaud, Patrick Tavernier, Eric Boutoute, Marc Penot, Florian Koubbi, Philippe |
author_facet |
Giraldo, Carolina Mayzaud, Patrick Tavernier, Eric Boutoute, Marc Penot, Florian Koubbi, Philippe |
author_sort |
Giraldo, Carolina |
title |
Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages |
title_short |
Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages |
title_full |
Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages |
title_fullStr |
Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages |
title_full_unstemmed |
Lipid dynamics and trophic patterns in Pleuragramma antarctica life stages |
title_sort |
lipid dynamics and trophic patterns in pleuragramma antarctica life stages |
publisher |
Cambridge University Press (CUP) |
publishDate |
2015 |
url |
http://dx.doi.org/10.1017/s0954102015000036 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102015000036 |
long_lat |
ENVELOPE(140.000,140.000,-66.667,-66.667) |
geographic |
Dumont d’Urville |
geographic_facet |
Dumont d’Urville |
genre |
Antarc* Antarctic Science Antarctica D’Urville Sea Copepods |
genre_facet |
Antarc* Antarctic Science Antarctica D’Urville Sea Copepods |
op_source |
Antarctic Science volume 27, issue 5, page 429-438 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102015000036 |
container_title |
Antarctic Science |
container_volume |
27 |
container_issue |
5 |
container_start_page |
429 |
op_container_end_page |
438 |
_version_ |
1792506920372797440 |