dc.contributor.author | Moksness, Erlend | |
dc.contributor.author | Johannessen, Tore | |
dc.date.accessioned | 2012-08-02T15:18:22Z | |
dc.date.available | 2012-08-02T15:18:22Z | |
dc.date.issued | 1988 | |
dc.identifier.citation | This report is not to be cited without prior reference to the authors | no_NO |
dc.identifier.uri | http://hdl.handle.net/11250/104517 | |
dc.description.abstract | From December 1987 to March 1988 two transects, Torungen -
Hirtshals and Oksøy - Hanstholm, were performed once a month for
sampling of herring larvae. The gear used was a 9 feet Isaac-Kid
Midwater trawl sampling in the upper 60 m of the water column.
High numbers of herring larvae were caught in the inflowing waters
to the Skagerrak area from January to March 1988 and in the
Norwegian Coastal Current moving out of the Skagerrak area,
specially in January and February 1988. All the sampled herring
larvae were stored in 80 % buffered alcohol, and were examined
within 7 days for total and standard length. Later between 38 and 70
larvae from each cruise were examined for daily increments in their
otoliths. In addition the wet and dry weights of the same larvae were
decided. Estimated hatching date of the examined larvae ranged
from 18 August 1987 to 28 November 1987 with a main hatching
period in the middle of September, except for the larvae sampled
during the March survey. These larvae had an average hatching date
in the first part of October. The estimated hatching periods indicate
that the larvae entering the Skagerrak area mainly came from the
spawning area of the Northern and Central North Sea in December
1987 to February 1988, while the larvae collected in March have
their origin in the Central North Sea. | no_NO |
dc.language.iso | eng | no_NO |
dc.publisher | ICES | no_NO |
dc.relation.ispartofseries | ICES CM Documents;1988/H:20 | |
dc.subject | herring | no_NO |
dc.subject | sild | no_NO |
dc.subject | fish larvae | no_NO |
dc.subject | fiskelarver | no_NO |
dc.subject | distribution | no_NO |
dc.subject | utbredelse | no_NO |
dc.title | Herring larvae (Clupea harengus) investigations in the Skagerrak area, December 1987 to March 1988. A preliminary report | no_NO |
dc.type | Working paper | no_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 | no_NO |
dc.subject.nsi | VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 | no_NO |
dc.source.pagenumber | 18 s. | no_NO |