Browsing Brage IMR by Author "Solemdal, Per"
Now showing items 41-60 of 60
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Spawner quality effects on two measures of reproductive potential: have we been counting our eggs before they've hatched?
Marshall, C. Tara; Kjesbu, Olav Sigurd; Thorsen, Anders; Solemdal, Per (ICES CM documents, Working paper, 1999)Recent studies have found positive associations between recruitment and indices of spawner quality (condition) for stocks exhibiting an indeterminate relationship between recruitment and spawner biomass. This suggests ... -
Spawning areas and spawning period of the North-east Arctic haddock [HELP 25}
Solemdal, Per; Knutsen, Tor; Bjørke, Herman (help;1989 nr. 25, Research report, 1989)Spawning of North-East Artic haddock occurs on the Norwegian continental slope. The location of the spawning grounds is, however, diffuse. This is mainly due to difficulties in identifying haddock eggs. In this work this ... -
Spawning strategy and a mechanism for adaptive larval production in Arcto-Norwegian cod
Solemdal, Per; Ellertsen, Bjørnar (ICES CM Documents;1990/L:100, Working paper, 1990)The Arcto-Norwegian cod is spawning in the temperature stable Atlantic water, and the eggs ascend into the more temperature variable coastal water. Changes in time of peak spawning, up to 10 days within the last 60 ... -
A study on survival and growth of fish larvae in a large basin, related to feeding conditions : A preliminary study on herring larvae (Clupea harengus L.) and fry
Ellertsen, Bjørnar; Solemdal, Per; Tilseth, Snorre; Øiestad, Victor (ICES CM Documents;1975/E:44, Working paper, 1975) -
The effects of maternal status of Arcto-Norwegian cod on egg quality and vitality of early larvae. 1. The collection and characteristics of the cod females, a pilot study
Solemdal, Per; Kjesbu, Olav Sigurd; Kjørsvik, Elin (ICES CM Documents;1992/G:78, Working paper, 1992)On the basis of a new field method to determine the stage of spawning, egg groups from Arcto-Norwegian cod females in different stage of spawning were selected for further studies on egg quality and vitality of early ... -
The effects of maternal status of Arcto-Norwegian cod on egg quality and vitality of early larvae. 2. Preliminary results of the experiment in 1992
Solemdal, Per; Bergh, Øivind; Finn, Roderick Nigel; Fyhn, Hans Jørgen; Grahl-Nielsen, Otto; Homme, O.; Kjesbu, Olav Sigurd; Kjørsvik, Elin; Opstad, Ingegjerd; Skiftesvik, Anne Berit (ICES CM Documents;1992/G:79, Working paper, 1992)The stage of spawning of females of the Arcto-Norwegian cod caught during peak spawning in Lofoten had a profound effect on several vital parameters of the eggs and larvae. Significant negative correlations were ... -
Toktrapport [15/5 - 23/5, 1982]
Solemdal, Per ([Toktrapport/Havforskningsinstituttet];, Working paper, 1983-02-23) -
Toktrapport [16/3 - 29/3, 1981]
Bratland, Per; Fossum, Petter; Sundby, Svein; Solemdal, Per ([Toktrapport/Havforskningsinstituttet];, Working paper, 1981-04-29) -
Toktrapport [2/5 - 12/5, 1982]
Solemdal, Per ([Toktrapport/Havforskningsinstituttet];, Working paper, 1983-02-23) -
Toktrapport [2/5 - 19/5, 1983]
Ellertsen, Bjørnar; Fossum, Petter; Solemdal, Per; Sundby, Svein; Tilseth, Snorre ([Toktrapport/Havforskningsinstituttet];, Working paper, 1983-07-10) -
Toktrapport [21/4 - 15/5, 1987]
Knutsen, Tor; Solemdal, Per ([Toktrapport/Havforskningsinstituttet];, Working paper, 1988-06-05) -
Toktrapport [28/5 - 30/5, 1975]
Solemdal, Per ([Toktrapport/Havforskningsinstituttet];, Working paper, 1975-05-28) -
Toktrapport [30/4 - 10/5, 1981]
Ellertsen, Bjørnar; Solemdal, Per; Tilseth, Snorre; Fossum, Petter; Bakkeplass, Kjell; Bratland, Per ([Toktrapport/Havforskningsinstituttet];, Working paper, 1981-07-10) -
Toktrapport [30/4 - 16/5, 1980]
Sundby, Svein; Solemdal, Per ([Toktrapport/Havforskningsinstituttet];, Working paper, 1981-03-03) -
Toktrapport [4/5 - 19/5, 1996]
Solemdal, Per ([Toktrapport/Havforskningsinstituttet];, Working paper, 1997-05-05) -
Torskelarveprosjektene 1975 - 1988
Solemdal, Per (Rapport/Notat Biologisk og Kjemisk Oseanografi;Nr. BKO 8903, Working paper, 1989-06-13) -
Types and frequency of malformations and mortality in eggs of Arcto-Norwegian cod: A field study
Makhotin, Valeri; Solemdal, Per; Korsbrekke, Knut; Salthaug, Are (ICES CM Documents;2001/N:12, Working paper, 2001)Embryological studies on living cod eggs in NUNC-trays showed that spontaneous malformations during embryo development are lethal. They are called natural egg mortality in contrast to external lethal factors, as ... -
Variations in physical properties of pelagic eggs in different populations - genetic aspects
Solemdal, Per (ICES CM Documents;1970/F:29, Working paper, 1970) -
Vertical distribution and feeding of cod larvae in relation to occurrence and size of prey organisms
Ellertsen, Bjørnar; Moksness, Erlend; Solemdal, Per; Strømme, Tore; Tilseth, Snorre; Westgård, Trond; Øiestad, Victor (ICES CM Documents;1977/L:33, Working paper, 1977) -
Vertical distribution of pelagic fish eggs in relation to species, spawning behaviour and wind conditions
Solemdal, Per; Sundby, Svein (ICES CM Documents;1981/G:77, Working paper, 1981)1. The mean reduction of egg diameter from March to April is from 1.45 to 1.39 mm and 1.44 to 1.38 mm for artificially and naturally spawned eggs of Arcto-Norwegian cod, respectively. This means a reduction of volume of ...