Blar i Brage IMR på forfatter "Roald, Sverre Ola"
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Aggression and growth of atlantic salmon in different stocking densities
Fernö, Anders; Holm, Marianne; Roald, Sverre Ola (ICES CM Documents;1976/E:37, Working paper, 1976) -
Kartlegging av førekomsten av hummar i Møre og Romsdal – hausten 2008
Roald, Sverre Ola; Blom, Geir; Lorgen, Karl Anton (Fisken og havet;5-2010, Research report, 2010-11-15)In this study of the lobster population in the area of Møre and Romsdal during the lobster catch-season of 2008 (October – December), 5 552 lobsters were caught during 29 817 pot days. The catches were registered in three ... -
Occurrence of shell disease in lobsters, Homarus gammarus (L.), in the southern part of Oslofjord, Norway
Roald, Sverre Ola; Aursjø, Johan; Håstein, Tore (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1981)Shell disease in a natural lobster population in Norway is described. The external signs were characterized by necrotic lesions of the exoskeleton, especially on the large chelae. Chitin-degrading bacteria were cultured ... -
Undersøkelser av kveis (Phocanema desipiens) i torsk (Gadus morhua) fanget i kystnære områder utenfor Ålesund
Roald, Sverre Ola; Høihjelle, Lars (Fisken og havet, Research report, 1984)From April 1981 to April 1982 2328 cod fillets from three local fishing grounds outside Aalesund were examined for the presence of larval nematode worms (Phocanema decipiens). In average, from 44.8 to 63.1 per cent of ...