Karyotypes of Some Neotropical Turtles

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Abstract
Analyses of meiotic and mitotic chromosomes are presented for 8 spp. of Neotropical turtles. Geochelone carbonaria differs from G. denticulata by centromere position of 1 of the smaller macrochromosomes. G. carbonaria is considered primitive in this respect because its karyotype is similar to that of the Old World batagurines. Three taxa of Greater Antillean [West Indies] Chrysemys (C. terrapen, C. stejnegeri vicina, C. decorata) possess a typical emydine karyotype and do not differ from other Chrysemys or other emydine genera that have been karyotyped. Rhinoclemys punctularia has 2 pairs of microchromosomes not found in R. pulcherrima. R. punctularia is considered karyotypically primitive to R. pulcherrima due to its closer similarity to the Old World batagurine karyotype. The karyotype of Kinosternon scorpioides from Trinidad [West Indies], is similar to previous reports of specimens from Brazil and of other species of Kinosternon.

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