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Karyological relationships between the Cryptobranchid salamanders

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Summary

The 3 living Cryptobranchids (Andrias japonicus, A. davidianus andCryptobranchus alleganiensis) show 2n=60 and nuclear DNA amounts of respectively 92.9, 100.1 and 112.5 pg. Karyologically, the 2 genera differ in the morphology of 2 chromosome pairs. The hypotheses are advanced that either theCryptobranchus karyotype is derived from that ofAndrias through an unequal translocation, or the karyotypes of both genera are derived from that of a common (perhaps hynobiid) ancestor with at least 62 chromosomes.

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Authors and Affiliations

  1. Institute of Histology and Embryology, The University, Faculty of Sciences, via Mezzocannone 8, I-80134, Napoli, Italy

    A. Morescalchi, G. Odierna & E. Olmo

Authors
  1. A. Morescalchi
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  2. G. Odierna
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  3. E. Olmo
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Research supported by a contribution from the Italian C.N.R.

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Morescalchi, A., Odierna, G. & Olmo, E. Karyological relationships between the Cryptobranchid salamanders. Experientia 33, 1579–1581 (1977). https://doi.org/10.1007/BF01934008

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