| individual variation in alkaloid content of poison frogs of madagascar (mantella; mantellidae). | brightly colored malagasy poison frogs, mantella spp., sequester lipophilic, basic alkaloids from arthropod prey for their own chemical defense. consequently, microsympatric prey diversity is expected to influence alkaloid diversity observed in poison frogs. twenty-two specimens of three mantella species from four localities in moist forests of southeastern madagascar were analyzed individually via gas chromatography-mass spectrometry, revealing that they contain over 80 known alkaloids. frogs w ... | 2006 | 17013661 |
| individual and geographic variation of skin alkaloids in three species of madagascan poison frogs (mantella). | alkaloid profiles for 81 individual mantellid frogs, mantella baroni (boulenger 1988) (n = 19), m. bernhardi (n = 51), and m. madagascariensis (grandidier 1877) (n = 11), from six different populations from madagascar were examined. marked individual differences in alkaloid composition (number, type, and amount) were observed between different species and between populations of the same species. disjunct populations of each of the three species differed significantly in alkaloid composition. sym ... | 2008 | 18196341 |