| reconstructing an island radiation using ancient and recent dna: the extinct and living day geckos (phelsuma) of the mascarene islands. | mitochondrial (12srrna and cyt b, 1086 bp) and nuclear (c-mos, 374 bp) dna sequences were used to investigate relationships and biogeography of 24 living and extinct taxa of phelsuma geckos. monophyly of phelsuma and sister relationship to the sw african rhoptropella is corroborated. phelsuma originated on madagascar and made multiple long-distance invasions of oceanic islands including the mascarenes, aldabra, comores, seychelles, andamans, and perhaps pemba. the mascarenes were probably coloni ... | 2004 | 15019612 |
| morphology of the pancreas of some species belonging to the genera phelsuma and gecko (family gekkonidae): evidence of apoptotic process during the seasonal cycle. | in this study we investigated comparative morphology of the endocrine pancreas of several species belonging to the family gekkonidae and apoptotic processes of the pancreas which may be correlated to the seasonal cycle. the following species of the family gekkonidae were studied: phelsuma lineata, p. madagascariensis, p. dubia, p. abotti, gekko gecko, g. vittatus, and geckonia chazaliae. in all these species the pancreas consisted of large and medium islets as well as endocrine cells which were ... | 2006 | 16763810 |
| geographical patterns of deep mitochondrial differentiation in widespread malagasy reptiles. | using sequences of the mitochondrial 16s rrna gene, we reconstructed the phylogeography of six widely distributed malagasy reptiles: two gekkonid lizard species, phelsuma lineata and hemidactylus mercatorius; two chameleons, the calumma brevicorne complex, and furcifer lateralis; and two skinks, trachylepis gravenhorstii and trachylepis elegans. genetic differentiation among major haplotype lineages was high and in some cases indicates or confirms species status of the divergent populations. max ... | 2007 | 17920299 |