Rapid evolution of a geographic cline in size in an introduced fly.

@article{Huey2000RapidEO,
  title={Rapid evolution of a geographic cline in size in an introduced fly.},
  author={Raymond B Huey and George W. Gilchrist and Mary Lou Carlson and Daniel J. Berrigan and Luis Barneo Serra},
  journal={Science},
  year={2000},
  volume={287 5451},
  pages={
          308-9
        }
}
The introduction and rapid spread of Drosophila subobscura in the New World two decades ago provide an opportunity to determine the predictability and rate of evolution of a geographic cline. In ancestral Old World populations, wing length increases clinally with latitude. In North American populations, no wing length cline was detected one decade after the introduction. After two decades, however, a cline has evolved and largely converged on the ancestral cline. The rate of morphological… CONTINUE READING

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