Inter-familiar differences in sprint speed of hatchling Sceloporus occidentalis (Reptilia: Iguanidae)

Authors

  • Fredrica H. van Berkum,

    1. Department of Zoology NJ-15, University of Washington, Seattle, Washington 98195, USA
    Search for more papers by this author
    • *Department of Ecology and Evolution, State University of New York, Stony Brook NY 11794, USA

  • Joyce S. Tsuji

    1. Department of Zoology NJ-15, University of Washington, Seattle, Washington 98195, USA
    Search for more papers by this author

Abstract

Hatchling Sceloporus occidentalis from the same dam had more similar sprint speeds than did hatchlings from different dams. Families (e.g. siblings from the same dam) of hatchlings differ significantly in body size. However, family differences in sprint speed remain significant when the size differences are removed statistically. Genetic differences among the families of lizards may account for most of the family differences in speed, although environmental or maternal effects may also contribute to family differences in sprint speed.

Ancillary