Ontogenic changes in the feeding ecology of the early life stages of the Antarctic silverfish (Pleuragramma antarcticum) documented by stable isotopes and diet analysis in the Dumont d'Urville Sea (East Antarctica)
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 2011 |
| Auteurs (8) | : | GIRALDO Carolina CHEREL Yves VALLET Carole MAYZAUD Patrick TAVERNIER Eric MOTEKI Masato HOSIE Graham KOUBBI Philippe |
| Revue scientifique | : | Polar Science |
| Volume | : | 5 |
| Fascicule | : | 2 |
| Pages | : | 252-263 |
| DOI | : | 10.1016/j.polar.2011.04.004 |
| URL | : | <go to isi>://wos:000209057800014 |
| Abstract | : | The feeding ecology of the notothenioid fish Pleuragramma antarcticum was studied in the Dumont d'Urville Sea (East Antarctica) near the French Antarctic station. Stable isotopes (delta C-13 and delta N-15) and diet contents were used in order to study dietary shifts between fish larvae and juveniles. All specimens had low delta C-13 values (< -24 parts per thousand), a main characteristic of high-Antarctic pelagic species. Fish larvae showed differences in both carbon and nitrogen ratios when compared with juveniles. Muscle delta N-15 values showed a difference of one trophic level (similar to 3 parts per thousand) between larvae (6.7 parts per thousand) and juveniles (9.7-10.0 parts per thousand) and a trophic position of tertiary consumers. Diet content analyses (stereomicroscope and scanning electron microscopes) indicated that larvae are omnivorous, feeding on phytoplankton (mainly diatoms) as well as on zooplankton species. A positive relationship between delta N-15 values and size was found and indicated a carnivorous diet for older specimens. (C) 2011 Elsevier B.V. and NIPR. All rights reserved. |
| Mots-clés | : | - |
| Commentaire | : | Times Cited: 8 8 |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Giraldo C, Cherel Y, Vallet C, Mayzaud P, Tavernier E, Moteki M, Hosie G, Koubbi P (2011) Ontogenic changes in the feeding ecology of the early life stages of the Antarctic silverfish (Pleuragramma antarcticum) documented by stable isotopes and diet analysis in the Dumont d'Urville Sea (East Antarctica). Pol Science 5: 252-263 | doi: 10.1016/j.polar.2011.04.004
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