Cytogenetic Analysis Of The Pleurodine Turtle Phrynops Hogei And Its Taxonomic Implications

Kent M. Reed, Ira F. Greenbaum, Brian G. Hanks, John W. Bickham, Anders G.J. Rhodin, Russell A. Mittermeier, Luiz P. Fedullo

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Abstract

Conventional chromosomal preparations of the Brazilian sidenecked turtle Phrynops hogei indicate the karyotype of this species (diploid number 2n = 58; fundamental number FN = 64) is identical to that reported for other members of the genus. Electron microscopic analysis of whole-cell complements of synap- tonemal complexes corroborated the karyotypic description and provided definitive resolution of the aero- centric condition of the microchromosomes. Additionally, this approach provided a continuous sequence of prophase I nuclei which enabled detailed description of chromosomal behavior from leptonema through dia- kinesis and the sequence of centriolar replication.

Original languageEnglish (US)
Pages (from-to)203-212
Number of pages10
JournalAmphibia Reptilia
Volume12
Issue number2
DOIs
StatePublished - 1991

Bibliographical note

Funding Information:
Acknowledgments. Critical reviewso f the manuscript were provided by J. L. Carr and J. W. Sites, Jr. The researchw as supported in part by grants from the US National ScienceF oundation(BSR-8614569 and BSR-8822751), the US National Institutes of Health (GM-27014), and the Texas Agricultural Research Foundation (Expanded Research Area).

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