Green Poison Frog, Green and Black Dart-poison Frog, Gold Arrow-poison Frog
© 2006 Dr. Peter Janzen (1 of 88)
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Colombia, Costa Rica, Nicaragua, Panama, United States
U.S. state distribution from AmphibiaWeb's database: Hawaii
Life History, Abundance, Activity, and Special Behaviors
Males are territorial at high population densities but may not be at low populaton densities (Caldwell and Summers 2003). The male call is a high-pitched, insect-like buzz sounding like "cheez-cheez-cheez" (Leenders 2001). The call averages 3.5 kHz in frequency, and can last from two to four seconds followed by a five-second pause (Savage 2002). Males can mate with many females and care for offspring of different females simultaneously (Caldwell and Summers 2003). Females court the males and wrestle other females and chase them from their territories (Savage 2002). This behavior increases male reproductive success but puts survival success of offspring in jeopardy, since females do not defend their territories (Caldwell and Summers 2003). A single male can mate with up to six females (Savage 2002). After being selected by the females, the males then lead the females to the nest site made from leaf litter and the females lay four to six eggs there (Guyer and Donnelly 2005). The male visits the eggs periodically over the incubation period to shed water, remove fungus, and rotate the eggs. After the eggs hatch, the tadpoles crawl up on the male's back (Savage 2002). The male then transports the tadpoles to small pools of water, usually found in tree holes (Caldwell and Summers 2003). If some eggs hatch earlier than others, the tadpoles that are born first may practice cannibalism by eating the smaller tadpoles.
The tadpoles' diet consist of algae, detritus, protozoans, insect larvae, and each other (Leenders 2001). Tadpoles are moderate-sized and can reach 30 mm (Savage, 2002). The adults' diets consist mainly of tiny ants and mites but they also prey on beetles, flies, and springtails (Caldwell and Summers 2003). They are known to have a life-span of eight years in captivity but it is much lower in the wild (Leenders 2001).
Trends and Threats
Relation to Humans
A Spanish-language species account can be found at the website of Instituto Nacional de Biodiversidad (INBio).
Caldwell, J. P., and Summers, K. D. (2003). ''Green poison frog, Dendrobates auratus.'' Grzimek's Animal Life Encyclopedia, Volume 6, Amphibians. 2nd edition. M. Hutchins, W. E. Duellman, and N. Schlager, eds., Gale Group, Farmington Hills, Michigan.
Guyer, C., and Donnelly, M. A. (2005). Amphibians and Reptiles of La Selva, Costa Rica and the Caribbean Slope: A Comprehensive Guide. University of California Press, Berkeley.
Leenders, T. (2001). A Guide to Amphibians And Reptiles of Costa Rica. Zona Tropical, Miami.
Savage, J. M. (2002). The Amphibians and Reptiles of Costa Rica. University of Chicago Press, Chicago and London.
Written by Peera Chantasirivisal (Kris818 AT berkeley.edu), URAP, UC Berkeley
First submitted 2005-10-18
Edited by Kellie Whittaker (2010-09-22)
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