| mitochondrial introgression, color pattern variation, and severe demographic bottlenecks in three species of malagasy poison frogs, genus mantella. | madagascar is a biodiversity hotspot particularly rich in amphibian diversity and only a few charismatic malagasy amphibians have been investigated for their population-level differentiation. the mantellamadagascariensis group is composed of two rainforest and three swamp forest species of poison frogs. we first confirm the monophyly of this clade using dna sequences of three nuclear and four mitochondrial genes, and subsequently investigate the population genetic differentiation and demography ... | 2019 | 31018611 |
| 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 |
| complete nucleotide sequence of the mitochondrial genome of a malagasy poison frog mantella madagascariensis: evolutionary implications on mitochondrial genomes of higher anuran groups. | we determined the complete nucleotide sequence of the mitochondrial (mt) genome of a malagasy poison frog, mantella madagascariensis (family mantellidae), and partial sequences of two mantella (m. baroni and m. bernhardi) and two additional mantellid species (boophis madagascariensis and mantidactylus cf. ulcerosus). the m. madagascariensis genome was shown to be the largest (23kbp) of all vertebrate mtdnas investigated so far. furthermore, the following unique features were revealed: (1) the po ... | 2006 | 16446106 |