These arthropod sources include three endemic Malagasy ants, Tetramorium electrum, Anochetus grandidieri, and Paratrechina amblyops (subfamilies Myrmicinae, Ponerinae, and Formicinae, respectively), and the pantropical tramp millipede R. Arthropod sources for 11 “poison frog” alkaloids were discovered, 7 of which were also detected in microsympatric Mantella. We report GC-MS analyses of extracts of arthropods and microsympatric Malagasy poison frogs ( Mantella) collected from Ranomafana, Madagascar.
In the Neotropics, myrmicine and formicine ants and the siphonotid millipede Rhinotus purpureus are dietary sources for alkaloids in dendrobatid poison frogs, yet the arthropod sources for Mantella poison frogs in Madagascar remained unknown. With few exceptions, aposematically colored poison frogs sequester defensive alkaloids, unchanged, from dietary arthropods.
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