> Details

Ekau, Werner

Demersal fish fauna of the Weddell Sea, Antarctica

Reference
management

Bookmarks

Remove from
bookmarks

Share this on Whatsapp

Close

Bookmarks



You can manage bookmarks using lists, please log in to your user account for this.
  • Media type: E-Article
  • Title: Demersal fish fauna of the Weddell Sea, Antarctica
  • Contributor: Ekau, Werner
  • imprint: Cambridge University Press (CUP), 1990
  • Published in: Antarctic Science
  • Language: English
  • DOI: 10.1017/s0954102090000165
  • ISSN: 1365-2079; 0954-1020
  • Origination:
  • Footnote:
  • Description: <jats:p>The demersal fish fauna of the southern and eastern Weddell Sea is described. The following species were recorded for the first time in this area: <jats:italic>Aethotaxis mitopteryx, Bathyraja eatoni, B. Maccaini, B</jats:italic>. sp2 (FAO-list), <jats:italic>Bathydraco marri, Dissostichus mawsoni, Macrourus holotrachys, Muraenolepis</jats:italic> sp., <jats:italic>Notothenia coriiceps, Notothenia kempi, Psilodraco spec.</jats:italic> and <jats:italic>Trematomus nicolai</jats:italic>. In terms of biomass the dominant species on the very narrow eastern continental shelf were <jats:italic>Chionodraco myersi</jats:italic> (49%), <jats:italic>Trematomus eulepidotus</jats:italic> (11%), <jats:italic>C. hamatus</jats:italic> (7%), <jats:italic>T. lepidorhinus</jats:italic> (6%), <jats:italic>Pagetopsis maculatus</jats:italic> (5%) and <jats:italic>T. scotti, Cryodraco antarcticus, Cygnodraco mawsoni</jats:italic> and <jats:italic>Pleuragramma antarcticum</jats:italic> (4% each). The highest density of individuals and greatest biomass was found between 400 and 650 m water depth. Here, <jats:italic>C. myersi, T. eulepidotus</jats:italic> and <jats:italic>T. lepidorhinus</jats:italic> dominated the catches. The shallow shelf area was inhabited by smaller species such as <jats:italic>T. scotti, T. centronotus, P. maculatus, Artedidraco skottsbergii, A. shackletoni</jats:italic>, and <jats:italic>Prionodraco evansii</jats:italic>. In the southern Weddell Sea <jats:italic>Akarotaxis nudiceps, Dolloidraco longedorsalis, Gerlachea australis, Pleuragramma antarcticum</jats:italic>, and <jats:italic>Trematomus loennbergi</jats:italic> were dominant. Members of the Channichthyidae occurred only occasionally, most of these are <jats:italic>Dacodraco hunteri</jats:italic>. The biomass of the demersal fish fauna was estimated to be 0.3 to 1.6 t km<jats:sup>−2</jats:sup> on the Vestkapp shelf and 0.1 to 0.4 t km<jats:sup>−2</jats:sup> for Gould Bay. Biomass values greater than 1.0 t km<jats:sup>−2</jats:sup> were found at the shelf edge.</jats:p>