Literaturdatenbank
Literaturdatenbank |
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Haiduk, M. W., & Bickham, J. W. (1982). Chromosomal homologies and evolution of testudinoid turtles with emphasis on the systematic placement of platysternon. Copeia, 1982(1), 60–66.
Added by: Admin (21 Nov 2009 11:53:13 UTC) |
| Resource type: Journal Article BibTeX citation key: Haiduk1982 View all bibliographic details  |
Categories: General Keywords: Genetik = genetics, Schildkröten = turtles + tortoises, Systematik = taxonomy Creators: Bickham, Haiduk Collection: Copeia |
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| Abstract |
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The karyotype of Platysternon (2n = 54) is compared to members of the Chelydridae, Emydidae and Kinosternidae and is found to be the most similar to the primitive batagurine emydid condition (2n = 52). The batagurine karyotype can be derived from that of Platysternon (or the reverse) by one event whereas several are required to derive Platysternon from either Chelydra or Macroclemys. Moreover, derived chromosomal characters are shared between Platysternon and emydids. It is proposed that the Platysternidae (Gray) may be valid, including only Platysternon. Chromosomal data are also used to develop a phylogeny of the Testudinoidea in which the Chelydridae is found to be an early offshoot of the emydid-testudinid line and the Platysternidae is derived from a later form ancestral to the Emydidae and Testudinidae.
Added by: Admin |