Article (Scientific journals)
Distribution of euphausiid larvae along the coast of East Antarctica in the Dumont d’Urville Sea (139–145°E) during summer 2004
Vallet, Carole; Koubbi, Philippe; Sultan, Emmanuëlle et al.
2009In Antarctic Science, 21 (03), p. 197-207
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Keywords :
Antarctica; Terre Adélie; Euphausia; Thysanoessa; euphausiid larvae
Abstract :
[en] The distribution of euphausiid larvae along the coast of Terre Adélie, Antarctica, was assessed using oblique tows of a double-framed bongo net at 38 stations during summer 2004. Larvae of Euphausia crystallorophias and Thysanoessa macrura were observed. For E. crystallorophias larvae, the calyptopis I stage was dominant along the coast, while the most commonly observed stage of T. macrura was the furcilia. The distribution of E. crystallorophias larvae were correlated with abiotic factors, including depth and sea surface salinity, whereas those of T. macrura larvae were correlated with biotic factors, especially chlorophyll a and nitrate. Developmental stages of both species increased in age from west to east in the survey area, with younger developmental stages (metanauplius and calyptopis I) in the western part of the region and older stages (calyptopis II and III and furcilia I to VI) in the eastern part near the Mertz Glacier Tongue (MGT). It is suggested that these patterns could be linked with the water circulation and wind: near the MGT gyres could concentrate all developmental stages of both species near the coast, while katabatic winds near Dumont d'Urville will promote larval advection seawards, with younger stages near the coast and older stages further offshore.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Vallet, Carole;  Université du Littoral Côte d'Opale, France > Laboratoire d'Océanologie et de géosciences
Koubbi, Philippe;  Université de Paris IV, France > Laboratoire d'Océanographie de Villefranche-sur-Mer
Sultan, Emmanuëlle;  Université de Paris IV, France > LOCEAN / MNHN
Goffart, Anne  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Swadling, Kerrie;  University of Tasmania, Australia > Marine Research Laboratories
Wright, Simon;  Australian Antarctic Division and Antarctic Climate and Ecosystems, Australia
Language :
English
Title :
Distribution of euphausiid larvae along the coast of East Antarctica in the Dumont d’Urville Sea (139–145°E) during summer 2004
Publication date :
2009
Journal title :
Antarctic Science
ISSN :
0954-1020
eISSN :
1365-2079
Publisher :
Cambridge University Press
Volume :
21
Issue :
03
Pages :
197-207
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy (PADI project), IPEV, Zone Atelier Antarctique (INSU-CNRS)
Available on ORBi :
since 24 August 2009

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