Experimental Evidence for Aposematism in the Dendrobatid Poison Frog Oophaga pumilio
- R. Saporito, R. Zuercher, M. Roberts, K. Gerow, M. A. Donnelly
- Biology, Environmental ScienceCopeia
- 28 December 2007
Experimental evidence is provided in support of the hypothesis that bright coloration in dendrobatids functions as an aposematic signal to predators.
Spatial and temporal patterns of alkaloid variation in the poison frog Oophaga pumilio in Costa Rica and Panama over 30 years.
- R. Saporito, M. A. Donnelly, P. Jain, H. Martin Garraffo, T. Spande, J. Daly
- ChemistryToxicon
- 1 November 2007
A review of chemical ecology in poison frogs
- R. Saporito, M. A. Donnelly, T. Spande, H. M. Garraffo
- BiologyChemoecology
- 1 September 2012
There is variation in nearly every attribute of the dendrobatids system and some of the challenges associated with unraveling the complexities of this model system are described.
Oribatid mites as a major dietary source for alkaloids in poison frogs
- R. Saporito, M. A. Donnelly, R. A. Norton, H. M. Garraffo, T. Spande, J. Daly
- ChemistryProceedings of the National Academy of Sciences
- 22 May 2007
The results of this study indicate that mites are a significant arthropod repository of a variety of alkaloids and represent a major dietary source of alkAloids in poison frogs.
Geographic and Seasonal Variation in Alkaloid-Based Chemical Defenses of Dendrobates pumilio from Bocas del Toro, Panama
- R. Saporito, M. A. Donnelly, H. M. Garraffo, T. Spande, J. Daly
- Environmental ScienceJournal of Chemical Ecology
- 5 May 2006
Individual alkaloid variation in the dendrobatid poison frog D. pumilio is examined among seven populations and between two seasons on Isla Bastimentos, located in the Bocas del Toro archipelago of Panama, illustrating that chemical defense in this species can vary on a small spatial and temporal scale.
Not all colors are equal: predation and color polytypism in the aposematic poison frog Oophaga pumilio
- Robert H. Hegna, R. Saporito, M. A. Donnelly
- Environmental ScienceEvolutionary Ecology
- 1 September 2013
The attack rate was lower on Isla Colón compared to mainland Costa Rica, which supports the hypothesis that less overall predation in the Bocas del Toro Archipelago may contribute to the overall warning signal diversity in O. pumilio there by relaxing selection for aposematic traits.
ARTHROPOD ALKALOIDS IN POISON FROGS : A REVIEW OF THE 'DIETARY HYPOTHESIS'
- R. Saporito, T. Spande, H. M. Garraffo, M. A. Donnelly
- Biology
- 1 April 2009
The most significant findings and studies that led to the proposal of the 'dietary hypothesis', which states that most of these alkaloids are sequestered unchanged from dietary arthropods, are reviewed.
Alkaloids in the Mite Scheloribates laevigatus: Further Alkaloids Common to Oribatid Mites and Poison Frogs
- R. Saporito, R. A. Norton, N. R. Andriamaharavo, H. M. Garraffo, T. Spande
- Chemistry, BiologyJournal of Chemical Ecology
- 12 February 2011
The findings of this study indicate that oribatid mites, and in particular, members of the genus Scheloribates, represent a relatively unexplored arthropod repository for alkaloids and a significant dietary source of alkaloid-containing arthropods in poison frogs.
Ontogenetic scaling of poison glands in a dendrobatid poison frog
- R. Saporito, M. Isola, V. Maccachero, K. Condon, M. A. Donnelly
- Environmental Science
- 1 December 2010
Examination of poison glands histologically in a sample of the poison frog Oophaga pumilio found the size, number and percentage of skin area occupied by poison glands increased allometrically as a function of body size, whereas poison gland density decreased with body size.
Contrasting Colors of an Aposematic Poison Frog Do Not Affect Predation
- Robert H. Hegna, R. Saporito, K. Gerow, M. A. Donnelly
- Environmental Science
- 1 March 2011
The results indicate that the pattern of Costa Rican O. pumilio does not influence predation, and support the hypothesis that novel backgrounds evoke a neophobic reaction and can affect predation rates.
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