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dc.contributor.authorFossen, Erlend Ignacio Fleck
dc.contributor.authorPelabon, Christophe
dc.contributor.authorEinum, Sigurd
dc.date.accessioned2020-03-24T14:25:00Z
dc.date.available2020-03-24T14:25:00Z
dc.date.created2019-07-02T18:48:42Z
dc.date.issued2019
dc.identifier.citationJournal of Experimental Biology. 2019, 222 1-7.en_US
dc.identifier.issn0022-0949
dc.identifier.urihttps://hdl.handle.net/11250/2648410
dc.description.abstractMetabolic rate (MR) often scales with body mass (BM) following a power function of the form MR=aBMb, where log(a) is the allometric intercept and b is the allometric exponent (i.e. slope on a log–log scale). The variational properties of b have been debated, but very few studies have tested for genetic variance in b, and none have tested for a genotype-by-environment (G×E) interaction in b. Consequently, the short-term evolutionary potentials of both b and its phenotypic plasticity remain unknown. Using 10 clones of a population of Daphnia magna, we estimated the genetic variance in b and assessed whether a G×E interaction affected b. We measured MR on juveniles of different sizes reared and measured at three temperatures (17, 22 and 28°C). Overall, b decreased with increasing temperature. We found no evidence of genetic variance in b at any temperature, and thus no G×E interaction in b. However, we found a significant G×E interaction in size-specific MR. Using simulations, we show how this G×E interaction can generate genetic variation in the ontogenetic allometric slope of animals experiencing directional changes in temperature during growth. This suggests that b can evolve despite having limited genetic variation at constant temperatures.en_US
dc.language.isoengen_US
dc.publisherCompany of Biologistsen_US
dc.titleGenetic and environmental effects on the scaling of metabolic rate with body sizeen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber1-7en_US
dc.source.volume222en_US
dc.source.journalJournal of Experimental Biologyen_US
dc.identifier.doi10.1242/jeb.193243
dc.identifier.cristin1709569
dc.relation.projectNorges forskningsråd: 223257en_US
dc.relation.projectNorges forskningsråd: 230482en_US
dc.relation.projectNorges teknisk-naturvitenskapelige universitet: IBIen_US
dc.description.localcode© 2019. Published by The Company of Biologists Ltd http://www.biologists.com/user-licence-1-1/en_US
cristin.unitcode194,66,10,0
cristin.unitnameInstitutt for biologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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