Data from: Plasticity through canalization: the contrasting effect of temperature on trait size and growth in Drosophila
McDonald, Jeanne M. C.
Ghosh, Shampa M.
Gascoigne, Samuel J. L.
Shingleton, Alexander W.
Published Aug 09, 2019 on Dryad.
Cite this dataset
McDonald, Jeanne M. C.; Ghosh, Shampa M.; Gascoigne, Samuel J. L.; Shingleton, Alexander W. (2019). Data from: Plasticity through canalization: the contrasting effect of temperature on trait size and growth in Drosophila [Dataset]. Dryad. https://doi.org/10.5061/dryad.rk30f8b
In most ectotherms, a reduction in developmental temperature leads to an increase in body size, a phenomenon known as the temperature size rule (TSR). In Drosophila melanogaster, temperature affects body size primarily by affecting critical size, the point in development when larvae initiate the hormonal cascade that stops growth and starts metamorphosis. However, while the thermal plasticity of critical size can explain the effect of temperature on overall body size, it cannot entirely account for the effect of temperature on the size of individual traits, which vary in their thermal sensitivity. Specifically, the legs and male genitalia show reduced thermal plasticity for size, while the wings show elevated thermal plasticity, relative to overall body size. Here, we show that these differences in thermal plasticity among traits reflect, in part, differences in the effect of temperature on the rates of cell proliferation during trait growth. Counterintuitively, the elevated thermal plasticity of the wings is due to canalization in the rate of cell proliferation across temperatures. The opposite is true for the legs. These data reveal that environmental canalization at one level of organization may explain plasticity at another, and vice versa.
Morphological measurements used to generate Figure 1 in McDonald et al 2018
Data used to calculate the thermal plasticity of cell size and cell number in the first tibia of the pupal legs, as shown in Figure 1 of McDonald et al 2018
Data used to estimate the number of cells in the wing and first-leg imaginal discs at 17˚C and 25˚C, as detailed in Table 2 of McDonald et al 2018
National Science Foundation, Award: IOS-0919855,IOS-1557638