10.5061/DRYAD.3CK64027
Kivelä, Sami M.
University of Oulu
Välimäki, Panu
University of Oulu
Mäenpää, Maarit I.
University of Oulu
Data from: Genetic and phenotypic variation in juvenile development in
relation to temperature and developmental pathway in a geometrid moth
Dryad
dataset
2012
Life History Evolution
Cabera exanthemata
cogradient variation
countergradient variation
2012-01-26T18:51:01Z
2012-01-26T18:51:01Z
en
https://doi.org/10.1111/j.1420-9101.2012.02478.x
27103 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Life histories show genetic population-level variation due to spatial
variation in selection pressures. Phenotypic plasticity in life histories
is also common, facilitating fine-tuning of the phenotype in relation to
the prevailing selection regime. In multivoltine (≥ 2 generations / year)
insects, individuals following alternative developmental pathways
(diapause / direct development) experience different selection regimes. We
studied the genetic and phenotypic components of juvenile development in
Cabera exanthemata (Lepidoptera: Geometridae) in a factorial split-brood
experiment. F2 offspring of individuals originating from populations in
northern and central Finland were divided among manipulations defined by
temperature (14ºC / 20ºC) and day length (24h / 15h). Short day length
invariably induced diapause, whereas continuous light almost invariably
induced direct development in both regions, although northern populations
are strictly univoltine in the wild. Individuals from northern Finland had
higher growth rates, shorter development times and higher pupal masses
than individuals from central Finland across the conditions, indicating
genetic differences between regions. Individuals that developed directly
into adults tended to have higher growth rates, shorter development times
and higher pupal masses than those entering diapause, indicating
phenotypic plasticity. Temperature-induced plasticity was substantial;
growth rate was much higher, development time much shorter and pupal mass
higher at 20ºC than at 14ºC. The degree of plasticity in relation to
developmental pathway was pronounced at 20ºC in growth rate and
development time and at 14ºC in pupal mass, emphasizing
multidimensionality of reaction norms. The observed genetic variation and
developmental plasticity seem adaptive in relation to time-stress due to
seasonality.
Kivelä et al. 2012_JEB_datadata file
Finland