Geographic variation in clutch size and a realized benefit of aggregative feeding.

  title={Geographic variation in clutch size and a realized benefit of aggregative feeding.},
  author={James A. Fordyce and Chris C. Nice},
  journal={Evolution; international journal of organic evolution},
  volume={58 2},
We investigated one causal explanation for geographic variation in clutch size and aggregative feeding of the pipevine swallowtail, Battus philenor. Populations in California lay larger clutches than those in Texas, and larger feeding aggregations grow at an accelerated rate on the California host plant. Using reciprocal transplant experiments with larvae from California and Texas populations, we found that the benefit of increased growth rate associated with feeding in larger groups occurred… CONTINUE READING

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