Publications
| new evidence for parallel evolution of colour patterns in malagasy poison frogs (mantella). | malagasy poison frogs of the genus mantella are diurnal and toxic amphibians of highly variable and largely aposematic coloration. previous studies provided evidence for several instances of homoplastic colour evolution in this genus but were unable to sufficiently resolve relationships among major species groups or to clarify the phylogenetic position of several crucial taxa. here, we provide cytochrome b data for 143 individuals of three species in the mantella madagascariensis group, includin ... | 2004 | 15548289 |
| alkaloids in madagascan frogs (mantella): pumiliotoxins, indolizidines, quinolizidines, and pyrrolizidines. | brightly colored ranid frogs of the genus mantella are found only in rain forests of madagascar. gc-ms and gc-ft-ir analyses of skin alkaloids of seven different species, including four populations of mantella madagascariensis, are reported. all contain one or more representatives of the pumiliotoxin a (ptx-a) class with the 13,14-dihydro derivatives 309a and 325a found in major amounts in the four populations of m. madagascariensis, while 307a (ptx-a) is found in two populations of m. madagasca ... | 1993 | 8377013 |