Natural Hybrids between Hyla cinerea and Hyla gratiosa: Morphology, Vocalization and Electrophoretic Analysis

@inproceedings{Gerhardt1980NaturalHB,
  title={Natural Hybrids between Hyla cinerea and Hyla gratiosa: Morphology, Vocalization and Electrophoretic Analysis},
  author={Howard C. Gerhardt and Sheldon I. Guttman and Alvan A. Karlin},
  year={1980}
}
Thirteen putative hybrids between Hyla cinerea and Hyla gratiosa were found near Savannah, Georgia. The ratio of head width to tibio-fibula length unequivocally distinguished the natural hybrids from samples of the parental species from the same area. Vocalizations of six male hybrids were H. gratiosa-like in their harmonic (fine-temporal) structure; vocalizations of six other male hybrids were H. cinerea-like. The spectral characteristics of hybrid calls were intermediate with respect to those… CONTINUE READING

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