Individual and geographic variation of skin alkaloids in three species of Madagascan poison frogs (Mantella)

Journal of Chemical Ecology
John W DalyMiguel Vences

Abstract

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. Sympatric populations of M. baroni and M. madagascariensis also differed significantly in alkaloid composition. In M. bernhardi, differences in alkaloid composition were marginally associated with different sexes. A total of 111 alkaloids, including isomers, were detected in analysis of the individuals from the three species. The majority (47%) appear likely to be obtained from dietary mites, whereas many of the others (18%) are presumed to be from ants, and a few (4%) are from millipedes. Putative dietary sources for the remaining alkaloids are generally unknown, but beetles are probably the source of at least some of the tricyclic alkaloids (6%). In addition, alkaloid compositions from extracts of groups of individuals from five additiona...Continue Reading

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Citations

Jan 20, 2016·Molecular Biology and Evolution·Rebecca D TarvinDavid C Cannatella
Jun 20, 2016·Journal of Chemical Ecology·Jenna R McGuganLauren A O'Connell
Mar 15, 2012·Chemistry : a European Journal·Andrea OlmosPatrick Pale
Sep 4, 2015·Journal of Chemical Ecology·Nirina R AndriamaharavoRalph A Saporito
Mar 21, 2019·Ecology and Evolution·Karina KlonoskiErica Bree Rosenblum
Sep 24, 2020·Integrative Zoology·Gilles DE MeesterRaoul VAN Damme
Feb 25, 2010·Journal of Natural Products·Nirina R AndriamaharavoThomas F Spande

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