• norsk
    • English
  • norsk 
    • norsk
    • English
  • Logg inn
Vis innførsel 
  •   Hjem
  • Havforskningsinstituttet
  • Published in cooperation with others
  • ICES CM documents authored by IMR scientists (1949-2011)
  • Vis innførsel
  •   Hjem
  • Havforskningsinstituttet
  • Published in cooperation with others
  • ICES CM documents authored by IMR scientists (1949-2011)
  • Vis innførsel
JavaScript is disabled for your browser. Some features of this site may not work without it.

Pelagic occurrence of Greenland halibut (Reinhardtius hippoglossoides) studied by means of vertical longlines

Vollen, Tone; Albert, Ole Thomas
Working paper
Thumbnail
Åpne
CM_2004_K_69.pdf (216.1Kb)
Permanent lenke
http://hdl.handle.net/11250/106419
Utgivelsesdato
2004
Metadata
Vis full innførsel
Samlinger
  • ICES CM documents authored by IMR scientists (1949-2011) [3139]
Originalversjon
This report is not to be cited without prior reference to the authors  
Sammendrag
In order to calculate reliable survey indices it’s important to know the dynamics of vertical distribution of a fish species. The vertical distribution of Greenland halibut (Reinhardtius hippogolossoides) cannot be studied acoustically due to low acoustic contrast. Therefore a series of experiments were designed to catch the species pelagically in the Barents Sea. Sampling was made by means of vertical longlines during three time periods of the year. The paper presents preliminary results from the experiments. Catch-rates through the water column was analysed and population structure compared between demersal and pelagic samples. Stomachs from bottom trawls were analysed to identify pelagic prey. At 400-700 m bottom depth, individual Greenland halibut were caught up to 420 m off the bottom. Individuals of all sizes were caught pelagically, but catches were dominated by smaller males. Pelagic occurrence varied between sampling periods, being more important in August and December than in March. Still, pelagic prey were found in stomachs from all seasons.
Utgiver
ICES
Serie
ICES CM Documents;2004/K:69

Kontakt oss | Gi tilbakemelding

Personvernerklæring
DSpace software copyright © 2002-2019  DuraSpace

Levert av  Unit
 

 

Bla i

Hele arkivetDelarkiv og samlingerUtgivelsesdatoForfattereTitlerEmneordDokumenttyperTidsskrifterDenne samlingenUtgivelsesdatoForfattereTitlerEmneordDokumenttyperTidsskrifter

Min side

Logg inn

Statistikk

Besøksstatistikk

Kontakt oss | Gi tilbakemelding

Personvernerklæring
DSpace software copyright © 2002-2019  DuraSpace

Levert av  Unit