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dc.contributor.authorÁrnason, Tómas
dc.contributor.authorSmáradóttir, Heiðdís
dc.contributor.authorThorarensen, Helgi
dc.contributor.authorSteinarsson, Agnar
dc.date.accessioned2022-09-01T08:49:48Z
dc.date.available2022-09-01T08:49:48Z
dc.date.issued2022-01-27
dc.description.abstractThe effects of early thermal environment on growth, age at maturity, and sexual size dimorphism in Arctic charr (Salvelinus alpinus) are investigated. This study is a 654-day long rearing trial split into two sequential experimental phases termed EP1 and EP2 and lasting 315 and 339 days, respectively. EP1 started at the end of the yolk sac stage when the experimental fish were divided into three groups and reared at different target temperatures (7, 10 and 12 ◦C). During EP2, all groups were reared at the same temperature (7–8 ◦C) until harvest (~1300 g). Growth rates increased with temperature from 7 to 12 ◦C, and at the end of EP1 the 12C group had 49.0% and 19.2% higher mean weight than groups 7C and 10C, respectively. Elevated early rearing temperatures were, however, found to cause precocious sexual maturation and reduce the long-term growth performance. At the end of EP2, the 7C group had 3.6% and 14.1% higher mean weight than 10C and 12C, respectively. Elevated early rearing temperatures had a much stronger effect on the maturity incidence of females, and while male-biased sexual size dimorphism (SSD) was found in all groups, the magnitude of SSD was positively associated with temperature.en_US
dc.identifier.citationÁrnason, Smáradóttir, Thorarensen, Steinarsson. Effects of Early Thermal Environment on Growth, Age at Maturity, and Sexual Size Dimorphism in Arctic Charr. Journal of Marine Science and Engineering. 2022;10(2)en_US
dc.identifier.cristinIDFRIDAID 2025600
dc.identifier.doi10.3390/jmse10020167
dc.identifier.issn2077-1312
dc.identifier.urihttps://hdl.handle.net/10037/26511
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.relation.journalJournal of Marine Science and Engineering
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.titleEffects of Early Thermal Environment on Growth, Age at Maturity, and Sexual Size Dimorphism in Arctic Charren_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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