Evolutionary capacity of upper thermal limits: beyond single trait assessments
Shaun Blackburn, Belinda van Heerwaarden, Vanessa Kellermann, Carla M Sgro
JOURNAL OF EXPERIMENTAL BIOLOGY | COMPANY BIOLOGISTS LTD | Published : 2014
Thermal tolerance is an important factor influencing the distribution of ectotherms, but we still have limited understanding of the ability of species to evolve different thermal limits. Recent studies suggest that species may have limited capacity to evolve higher thermal limits in response to slower, more ecologically relevant rates of warming. However, these conclusions are based on univariate estimates of adaptive capacity. To test these findings within an explicitly multivariate context, we used a paternal half-sibling breeding design to estimate the multivariate evolutionary potential for upper thermal limits in Drosophila melanogaster. We assessed heat tolerance using static (basal an..View full abstract
Awarded by Australian Research Council
This research was supported by grants from the Australian Research Council [DP110100665, DP12120457 and FT1110951 to C.M.S. and from the Science and Industry Endowment Fund to C.M.S. Monash University provided additional financial support.