Condition and diet of larval Pleuragramma antarcticum (Nototheniidae) from Terre Adélie (Antarctica) during summer

During austral summer 1996, the ichthyoplankton was sampled near the coast of Terre Adélie. Pleuragramma antarcticum Boulenger, 1902 constituted 99% of the sampled larvae. Larval fish condition was investigated by histology of the digestive organs. Most of the larvae were in good condition or slight...

Full description

Bibliographic Details
Main Authors: Koubbi, Philippe, Vallet, C., Razouls, S., Grioche, A., Hilde, D., Courcot, L., Janquin, M.A., Vacchi, Marino, Hureau, Jean-Claude
Format: Article in Journal/Newspaper
Language:unknown
Published: Société Française d'Ichtyologie 2007
Subjects:
Condition index, Diet, Larvae, Nototheniidae, Pleuragramma antarcticum, Southern Ocean
Southern Ocean
Austral
Terre Adélie
Terre-Adélie
Antarc*
Antarctica
Copepods
Online Access:https://dx.doi.org/10.26028/cybium/2007-311-009
http://sfi-cybium.fr/fr/condition-and-diet-larval-pleuragramma-antarcticum-nototheniidae-terre-ad%C3%A9lie-antarctica-during
Description
Summary:During austral summer 1996, the ichthyoplankton was sampled near the coast of Terre Adélie. Pleuragramma antarcticum Boulenger, 1902 constituted 99% of the sampled larvae. Larval fish condition was investigated by histology of the digestive organs. Most of the larvae were in good condition or slightly starved, some of them were severely starved but none were at a point of no-return. It seems that larvae feeding mainly on copepods are in better condition than those feeding mainly on diatoms, but also that those having an omnivorous diet are in better condition. There was no evidence for a build-up of body reserves allowing to sustain the larvae over winter.

Similar Items