Blar i ICES CM documents authored by IMR scientists (1949-2011) på forfatter "Svåsand, Terje"
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Are reared juveniles fit for release into the wild?
Svåsand, Terje (ICES CM Documents;1993/F:34, Working paper, 1993)The main question that has to be raised when planning to enhance natural fish populations is whether reared fish are fitted for a life in the wild, or more specifically, whether there are differences between reared and ... -
Comparative growth and survival of two genetic strains of Atlantic cod (Gadus morhua L.) reared through the early life stages in a marine pond in western Norway
Blom, Geir; Svåsand, Terje; Jørstad, Knut Eirik; Otterå, Håkon; Paulsen, Ole Ingar; Holm, Jens Christian (ICES CM Documents;1990/F:48, Working paper, 1990)The investigation was carried out in a marine pond in western Norway during spring and summer 1990. Two genetic defined strains of Atlantic cod (Gadus morhua L.) were used as broodstocks. A total of 11.1 x 10^6 cod larvae ... -
Demonstration of maternal effects of Atlantic cod: Combining the use of unique mesocosm and novel molecular techniques – A new EU-project
Svåsand, Terje; Ajiad, Adnan Mosa; Dahle, Geir; Jakobsen, Tore; Kjesbu, Olav Sigurd; Moksness, Erlend; Otterå, Håkon; Solemdal, Per; Thorsen, Anders (ICES CM documents, Working paper, 2000)One of the effects of fishing is a reduction in average age and size in exploited fish stocks, leading to an increasing proportion of recruit spawners in the stock. Current management practice assumes equal viability of ... -
Effect of size-selective mortality on growth of coastal cod (Gadus morhua L.) illustrated by tagging data and an individual-based growth and mortality model
Kristiansen, Tore S.; Svåsand, Terje (ICES CM Documents;1996/G:48, Working paper, 1996)Since 1983 more than one million reared cod juveniles have been tagged and released in different areas along the Norwegian coast. The goal of the programme is to evaluate the ecological and economical potential in sea ... -
Evaluation of genetic impact of aquaculture activities on native populations
Svåsand, Terje; Crosetti, Donatella; García-Vázquez, Eva; Verspoor, Eric; Bonhomme, François; Colombo, Lorenzo; Lapégue, Sylvie; Marteinsdottir, Gudrun; Olesen, Ingrid; Triantaphyllidis, Costas (ICES CM documents;2007/L:06, Working paper, 2007)During the past 10 years, worldwide production of farmed fish has more than doubled, with farming activities now producing half of the fish directly consumed by humans. The potential genetic effects of aquaculture on natural ... -
Large scale release experiment of juvenile lobsters, Homarus gammarus, in Norway
van der Meeren, Gro; Svåsand, Terje; Grimsen, Steinar; Kristiansen, Arve; Farestveit, Eva (ICES CM Documents;1990/K:2, Working paper, 1990)A large scale spring release of juvenile lobsters, Homarus gammarus, was conducted at Kvitsøy, southwestern Norway in March 1990. The lobsters, 14,700 one and a half year old and 8,700 six months old, were tagged internally ... -
Measurements of condition and growth of cod larvae reared in mesocosms: individual variability as a function of environmental condition or genetic inheritance
Clemmesen, Catriona; Bühler, Vivian; Carvalho, Gary R.; Chase, R.; Evans, Geoffrey T.; Hauser, Lorenz; Hutchinson, William F.; Mempel, Helgi; Moksness, Erlend; Otterå, Håkon; Paulsen, Helge; Svåsand, Terje (ICES CM Documents;2001/V:8, Working paper, 2001)Size, dry weight and RNA/DNA measurements of 3876 cod larvae from 26 different families of recruit and repeat spawners reared in two mesocosms ( 2500m³ and 4400m³) under natural conditions were analysed. To be able to ... -
Possibilities and limitations of extensive aquaculture of marine fish: evaluation of current results with Atlantic cod and further prospects
Kristiansen, Tore S.; Pedersen, Torstein; Svåsand, Terje (ICES CM documents, Working paper, 1998) -
Recruitment of wild and artificially reared cod (Gadus morhua L.) to the local spawning stock
Svåsand, Terje; Jørstad, Knut Eirik; Kristiansen, Tore S. (ICES CM Documents;1987/F:27, Working paper, 1987)A stock enhancement study of coastal cod was initiated in 1983, when 19,002 artificially reared cod fry were tagged and released in the Austevoll region in western Norway. As a part of this program, 3,946 cod fry were ... -
Release of artificially reared 0-group coastal cod (Gadus morhua L.) in a landlocked fjord in western Norway
Svåsand, Terje; Kristiansen, Trond (ICES CM Documents;1985/F:10, Working paper, 1985)In 1983 and 1984 about 14 000 seven month old pond or basin reared coastal cod were tagged and released in Heimarkspollen and Osen in Western Norway. In May 1984 fishing in the release areas was initiated and local ... -
Results of investigations of migration pattern of artificially reared coastal cod (Gadus morhua L.) in western Norway
Svåsand, Terje; Godø, Olav Rune (ICES CM Documents;1987/F:26, Working paper, 1987)Investigations of the migration pattern have been a central part in an ongoing enhancement study of cod in western Norway. In Sept. - Nov. 1983, 20,947 juvenile, basin-reared cod fry were tagged and released at three sites ... -
Tagging experiments on artificially reared 0-group coastal cod (Gadus morhua L.) in western Norway - results from the releases in 1984
Svåsand, Terje; Kristiansen, Tore S.; Næss, Harald (ICES CM Documents;1987/F:25, Working paper, 1987)In November - December 1984, 8,038 seven to eight month old pond or basin reared cod fry were tagged and released in Heimarkspollen, a landlocked fjord in western Norway. The aim of this study was to investigate ... -
The use of genetic tagging to study interaction between farmed and wild atlantic cod stocks
Jørstad, Knut Eirik; van der Meeren, Terje; Dahle, Geir; Paulsen, Ole Ingar; Svåsand, Terje; Otterå, Håkon (ICES CM documents;2009/Q:12, Working paper, 2009)Escapement of farmed fish from the aquaculture is considered as a risk for negative genetic impacts on native gene pools. In order to investigate potential interbreeding between cultured and wild Atlantic cod, Gadus ...