dc.contributor.author | Fossen, Erlend Ignacio Fleck | |
dc.contributor.author | Pelabon, Christophe | |
dc.contributor.author | Einum, Sigurd | |
dc.date.accessioned | 2020-03-24T14:25:00Z | |
dc.date.available | 2020-03-24T14:25:00Z | |
dc.date.created | 2019-07-02T18:48:42Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Journal of Experimental Biology. 2019, 222 1-7. | en_US |
dc.identifier.issn | 0022-0949 | |
dc.identifier.uri | https://hdl.handle.net/11250/2648410 | |
dc.description.abstract | Metabolic 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.iso | eng | en_US |
dc.publisher | Company of Biologists | en_US |
dc.title | Genetic and environmental effects on the scaling of metabolic rate with body size | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 1-7 | en_US |
dc.source.volume | 222 | en_US |
dc.source.journal | Journal of Experimental Biology | en_US |
dc.identifier.doi | 10.1242/jeb.193243 | |
dc.identifier.cristin | 1709569 | |
dc.relation.project | Norges forskningsråd: 223257 | en_US |
dc.relation.project | Norges forskningsråd: 230482 | en_US |
dc.relation.project | Norges teknisk-naturvitenskapelige universitet: IBI | en_US |
dc.description.localcode | © 2019. Published by The Company of Biologists Ltd http://www.biologists.com/user-licence-1-1/ | en_US |
cristin.unitcode | 194,66,10,0 | |
cristin.unitname | Institutt for biologi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |