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dc.contributor.advisorFalk Petersen, Inger Britt
dc.contributor.advisorPuvanendran, Velmurugu
dc.contributor.authorBashan, Tolga
dc.date.accessioned2013-05-22T10:29:58Z
dc.date.available2013-05-22T10:29:58Z
dc.date.issued2012-12-13
dc.description.abstractThe growth and important structures development in different temperature regime histories were studied during mid-metamorphosis stage of Atlantic cod (Gadus morhua) larvae. In order to see the growth and the organ development differentiation due to different temperatures at a given stage, we exposed the larvae into 4 different temperature regimes; L-L (low temperature at incubation, low temperature after hatching), L-H (low temperature at incubation, high temperature after hatching), H-L (high temperature at incubation, low temperature after hatching) and H-H (high temperature at incubation, high temperature after hatching) (low 4±0.2°C and high 9±0.2°C). The sampling was done according to the expected stage at a given sampling stage. Samples were fixed and studied under light microscope. Standard length and myotome height were measured for growth, swim bladder size, alimentary tract and fin differentiation were studied for organ development. The L-H group fish showed the best growth but had the highest variation in myotome heights. There was a lot of variation in organ developments at the given stages among the temperature groups, yet the groups with high temperatures after hatching period showed better organ development, postulating that besides the age is the key factor for fish to reach a given stage, also temperature is an extrinsic factor in organ development.en
dc.identifier.urihttps://hdl.handle.net/10037/5165
dc.identifier.urnURN:NBN:no-uit_munin_4878
dc.language.isoengen
dc.publisherUniversitetet i Tromsøen
dc.publisherUniversity of Tromsøen
dc.rights.accessRightsopenAccess
dc.rights.holderCopyright 2012 The Author(s)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-sa/3.0en_US
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)en_US
dc.subject.courseIDBIO-3950en
dc.subjectVDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Akvakultur: 922en
dc.subjectVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922en
dc.titleEffects of various early life history temperature regimes on development and metamorphosis of Atlantic cod (Gadus morhua) larvaeen
dc.typeMaster thesisen
dc.typeMastergradsoppgaveen


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Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)