Results of the preliminary survey on the coastal distribution of fish larvae in Adelie Land (Southern Ocean) during January-February 1996 ...

• Main Authors: Koubbi, Philippe, Hureau, Jean-Claude, Vacchi, Marino, White, Martin G.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Société Française d'Ichtyologie 1997
• Subjects: Adelie Land, Antarctic Ocean, Bathydraconidae, Ichthyoplankton, Nototheniidae, Pleuragramma antarcticum, PSE, Spatial distribution, Variogram; Antarctic; Antarctic Ocean; Pointe-Géologie; Southern Ocean; Adelie Land; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.26028/cybium/1997-214-005; https://sfi-cybium.fr/fr/results-preliminary-survey-coastal-distribution-fish-larvae-adelie-land-southern-ocean-during

A first ichthyoplankton spatial distribution survey was carried out in the coastal zone of Adelie Land in Antarctica in January-February 1996. Thirty three stations were investigated in a bay of 25 km2 surrounded on the southern side by the ice-cliffs of the continent and by the islands of the Pointe Géologie Archipelago on the eastern side. Samples of ichthyoplankton were collected by using a bongo net towed from the surface to near the bottom for depths less than 200 meters. Five species were caught but Pleuragramma antarcticum was dominant comprising 99% of the larval fish captured. A dense swarm of at least 17 individuals.m-3 was detected in the study area but densities were on average lower than 1 individual.m-3. Distribution of the larvae was explained by hydrological features and we believe that a major factor is the development of coastal gyres linked to the topography. ...