Description

Recent theory predicts that the sizes of cells will evolve according to fluctuations in body temperature. Smaller cells speed metabolism during periods of warming but require more energy to maintain and repair. To evaluate this theory, we studied the evolution

Recent theory predicts that the sizes of cells will evolve according to fluctuations in body temperature. Smaller cells speed metabolism during periods of warming but require more energy to maintain and repair. To evaluate this theory, we studied the evolution of cell size in populations of Drosophila melanogaster held at either a constant temperature (16°C or 25°C) or fluctuating temperatures (16 and 25°C). Populations that evolved at fluctuating temperatures or a constant 25°C developed smaller thoraxes, wings, and cells than did flies exposed to a constant 16°C. The cells of flies from fluctuating environments were intermediate in size to those of flies from constant environments. Most genetic variation in cell size was independent of variation in wing size, suggesting that cell size was a target of selection. These evolutionary patterns accord with patterns of developmental plasticity documented previously. Future studies should focus on the mechanisms that underlie the selective advantage of small cells at high or fluctuating temperatures.

Reuse Permissions
  • Downloads
    PDF (479.5 KB)

    Details

    Title
    • Flies Evolved Small Bodies and Cells at High or Fluctuating Temperatures
    Date Created
    2016-10-12
    Resource Type
  • Text
  • Collections this item is in
    Identifier
    • Digital object identifier: 10.1002/ece3.2534
    • Identifier Type
      International standard serial number
      Identifier Value
      2045-7758
    Note
    • The final version of this article, as published in Ecology and Evolution, can be viewed online at: http://onlinelibrary.wiley.com/doi/10.1002/ece3.2534/abstract?

    Citation and reuse

    Cite this item

    This is a suggested citation. Consult the appropriate style guide for specific citation guidelines.

    Adrian, G. J., Czarnoleski, M., & Angilletta, M. J. (2016). Flies evolved small bodies and cells at high or fluctuating temperatures. Ecology and Evolution, 6(22), 7991-7996. doi:10.1002/ece3.2534

    Machine-readable links