Spatial distribution and interannual variations in the size frequency distribution and abundances of Pleuragramma antarcticum larvae in the Dumont d’Urville Sea from 2004 to 2010

• Published in: Polar Science
• Main Authors: Koubbi, Philippe, O'Brien, Colleen, Loots, Christophe, Giraldo, Carolina, Smith, Martina, Tavernier, Eric, Vacchi, Marino, Vallet, Carole, Chevallier, Jean, Moteki, Masato
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier Science Bv 2011
• Subjects: Pleuragramma antarcticum; East Antarctic shelf; Fish larvae; Life cycle; Inter-annual variations; Antarctic; Commonwealth Bay; Dumont d’Urville; Mertz Glacier; Mertz Glacier Tongue; Antarc*; D’Urville Sea; Polar Science; Sea ice
• Online Access: https://archimer.ifremer.fr/doc/00069/17992/15528.pdf; https://archimer.ifremer.fr/doc/00069/17992/15546.pdf; https://doi.org/10.1016/j.polar.2011.02.003; https://archimer.ifremer.fr/doc/00069/17992/

This paper investigates the abundance and distribution of Pleuragramma antarcticum larvae by size class in the Dumont d’Urville Sea from 2004 to 2010. Samples were collected between Dumont d’Urville station and the Mertz Glacier Tongue onboard the RV l’Astrolabe for studying the inter-annual and spatial distribution of fish larvae and the TRV Umitaka Maru for looking at life stages vertical distributions. The seabed depression adjacent to the Mertz Glacier Tongue and in Commonwealth Bay hosted high abundances of small P. antarcticum larvae, while larger larvae were found in lower abundance and further offshore. We found that canyons, sea ice, stability of the water column and temperatures are important features for determining suitable areas for young larvae.