Latitudinal insect body size clines revisited: a critical evaluation of the saw-tooth model.

  title={Latitudinal insect body size clines revisited: a critical evaluation of the saw-tooth model.},
  author={Sami M Kivel{\"a} and Panu V{\"a}lim{\"a}ki and David Carrasco and Maarit I. M{\"a}enp{\"a}{\"a} and Jari Oksanen},
  journal={The Journal of animal ecology},
  volume={80 6},
1. Insect body size is predicted to increase with decreasing latitude because time available for growth increases. In insects with changing voltinism (i.e. number of generations per season), sharp decreases in development time and body size are expected at season lengths where new generations are added to the phenology of a species, giving rise to saw-tooth clines in these traits across latitudes. Growth rate variation may affect the magnitude of variation in body size or even reverse the saw… CONTINUE READING
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