Literaturdatenbank
Literaturdatenbank |
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Dowler, R. C., & Bickham, J. W. (1982). Chromosomal relationships of the tortoises (family testudinidae). Genetica, 58(3), 189–197.
Added by: Admin (24 Aug 2008 18:46:21 UTC) Last edited by: Beate Pfau (27 Jun 2009 08:24:55 UTC) |
| Resource type: Journal Article DOI: 10.1007/BF00128013 BibTeX citation key: Dowler1982a View all bibliographic details  |
Categories: General Keywords: Chelonoidis, Chelonoidis nigra, Geochelone, Gopherus, Gopherus berlandieri, Gopherus polyphemus, Histologie = histology, Indotestudo, Indotestudo elongata, Schildkröten = turtles + tortoises, Stigmochelys, Stigmochelys pardalis, Systematik = taxonomy, Testudinidae, Testudo Creators: Bickham, Dowler Collection: Genetica |
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| Abstract |
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Testudinidae Geochelone pardalis Indotestudo elongata elephantopus nigra Gopherus berlandieri polyphemus Chinemys reevesi Abstract Banded chromosomes of five species of testudinid turtles (Geochelone pardalis, G. elongata, G. elephantopus, Gopherus berlandieri, and G. polyphemus) reveal little variation within either genus, although there are differences in amount and distribution of heterochromatin between Geochelone pardalis and G. elongata. The chromosomal position and size of the nucleolar-organizer region differs between species of the two genera. Comparisons of standard karyotypes of these species and Malacochersus tornieri with data in the literature on other tortoises show a diploid number of 52 characterizes the family. These data are consistent with those for other families which show turtles are karyotypically conservative. G-banded chromosomes of Geochelone are identical to those of Chinemys reevesi, a karyotypically primitive batagurine emydid, supporting a derivation of the tortoises from a batagurine ancestor. Added by: Admin Last edited by: Beate Pfau |