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dc.contributor.authorNæss, Tore Håkon
dc.contributor.authorBergh, Øivind
dc.contributor.authorHarboe, Torstein
dc.contributor.authorNaas, Kjell Emil
dc.contributor.authorRabben, Håvard
dc.contributor.authorSkjolddal, Lillian
dc.date.accessioned2012-08-23T05:42:11Z
dc.date.available2012-08-23T05:42:11Z
dc.date.issued1990
dc.identifier.citationThis report is not to be cited without prior reference to the authorsno_NO
dc.identifier.urihttp://hdl.handle.net/11250/104761
dc.description.abstractAt 232 day degrees, halibut larvae were transferred from indoor tanks to 1.7 m^3 outdoor tanks for first feeding. The number in each tank was approximately 750. Three tanks were continuously given algal suspension ("green water") and supplied nonenriched Artemia instar II. Six tanks were given filtered deep water ("clear water"). Three of the six were supplied nonenriched Artemia, and three were supplied Artemia prefed in green water. Feeding incidence at day 3 was 47 % in green water and 0 % in clear water. Larval growth was significantly higher in green water compared to clear water, while no significant difference was found between the clear water groups given prefed and nonenriched Artemia. The mean myotome heights for all groups were 0.75 - 0.78 mm at day 7. At day 14 and 21, the mean heights were 1.49 and 1.86 mm in the green water group and 0.84 and 1.05 mm in the clear water groups. The survival rates were also much higher in green water. Out of a total of approximately 2250 halibut larvae in the green water tanks, 684 larvae were found alive at the end of the experiment. Corresponding numbers for the clear water tanks were 57 out of 4500. Preliminary results indicate no nutritional effect of the algae.no_NO
dc.language.isoengno_NO
dc.publisherICESno_NO
dc.relation.ispartofseriesICES CM Documents;1990/F:61
dc.subjecthalibutno_NO
dc.subjectkveiteno_NO
dc.subjectdiet experimentsno_NO
dc.subjectforingseksperimentno_NO
dc.subjectfish larvaeno_NO
dc.subjectfiskelarverno_NO
dc.subjectphytoplanktonno_NO
dc.subjectplanteplanktonno_NO
dc.titleGreen water in larviculture - An experiment with natural phytoplankton in tanks for first feeding of halibut larvae (Hippoglossus hippoglossus L.)no_NO
dc.typeWorking paperno_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921no_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922no_NO
dc.source.pagenumber22 s.no_NO


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