A karyological study and the analysis of two mitochondrial genes were conducted in several species of cordyliformes from Madagascar. Both studies confirmed the monophyly of cordyliformes. The karyological conservatism and small genetic distance among mitochondrial genes observed in these species are in line with the hypothesis that all cordyliformes should be included in a single family. The two studies yielded contrasting results with regard to the relationships between the Malagasy species and the Cordylidae and Gerrhosauridae. Nonetheless, the consistency between the data from mitochondrial gene analysis and those of taxonomic studies based on morphological characters is more in favor of an affinity between Malagasy Zonosaurinae and Gerrhosauridae and suggests that the karyological similarities between the former and the Cordylidae may be due to plesiomorphy. Interesting, though not conclusive, data were also obtained on interspecific relationships among Zonosaurinae. (C) 2002 Elsevier Science (USA).
A phylogenetic analysis of cordyliformes (Reptilia : Squamata): Comparison of molecular and karyological data / Odierna, Gaetano; A., Canapa; F., Andreone; G., Aprea; M., Barucca; T., Capriglione; E., Olmo. - In: MOLECULAR PHYLOGENETICS AND EVOLUTION. - ISSN 1055-7903. - STAMPA. - 23:(2002), pp. 37-42. [10.1006/mpev.2001.1077]
A phylogenetic analysis of cordyliformes (Reptilia : Squamata): Comparison of molecular and karyological data
ODIERNA, GAETANO;
2002
Abstract
A karyological study and the analysis of two mitochondrial genes were conducted in several species of cordyliformes from Madagascar. Both studies confirmed the monophyly of cordyliformes. The karyological conservatism and small genetic distance among mitochondrial genes observed in these species are in line with the hypothesis that all cordyliformes should be included in a single family. The two studies yielded contrasting results with regard to the relationships between the Malagasy species and the Cordylidae and Gerrhosauridae. Nonetheless, the consistency between the data from mitochondrial gene analysis and those of taxonomic studies based on morphological characters is more in favor of an affinity between Malagasy Zonosaurinae and Gerrhosauridae and suggests that the karyological similarities between the former and the Cordylidae may be due to plesiomorphy. Interesting, though not conclusive, data were also obtained on interspecific relationships among Zonosaurinae. (C) 2002 Elsevier Science (USA).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
