, Volume 54, Issue 3, pp 201–219

Chromosome homology and evolution of emydid turtles

  • John W. Bickham
  • Robert J. Baker

DOI: 10.1007/BF00293451

Cite this article as:
Bickham, J.W. & Baker, R.J. Chromosoma (1976) 54: 201. doi:10.1007/BF00293451


G-, C-, Q-banding and standard karyotypic analyses were used to study the chromosomal relationships of emydid turtles. Ten species of emydids were used (5 batagurines and 5 emydines) which samples all of the karyotypic variation known for the Emydidae. Data from a testudinid and a chelydrid are compared to the emydids. The karyotype of Mauremys and Sacalia is considered representative of the primitive karyotype for this group because of its widespread occurrence in the morphologically primitive Batagurinae and its similarity to that of some testudinids. The emydine karyotype is believed to have evolved from the primitive batagurine karyotype by the deletion of a heterochromatic macrochromosome. Siebenrockiella and Rhinoclemys are karyotypically derived batagurines.

Copyright information

© Springer-Verlag 1976

Authors and Affiliations

  • John W. Bickham
    • 1
  • Robert J. Baker
    • 1
  1. 1.Department of Biological Sciences and The MuseumTexas Tech UniversityLubbockUSA

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