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I am working in measuring and monitoring Amphibian and Reptile species occurring in the Middle Atlantic USA. I am a Commission Member of the United Nations, International Union for Conservation of Nature (IUCN), functioning as a Commission Member of the Species Survival Commission (SSC) and Amphibian Species Group (ASG).
The poison frogs of the Colombian Andes, Pacific lowlands and Panama have been recently recognized as a new, monophyletic and well-supported genus: Andinobates. The species richness and distribution within Andinobates remain poorly understood due to the paucity of geographic, genetic and phenotypic data. Here we use a combination of molecular, bioa...
Citation: Kahn, T.R., E. La Marca, S. Lotters, J.L. Brown, E. Twomey and A. Amézquita, Eds. 2015. Aposematic Poison Frogs (Dendrobatidae) of the Andean Countries: Bolivia, Colombia, Ecuador, Peru and Venezuela. Conservation International Tropical Field Guide Series, Conservation International, Arlington. USA. xxiii + 588pp.
This third iteration of the Amphibian Conservation Action Plan (ACAP) is the result of ~three-years of collaboration between dozens of people and organizations. It is my hope it will serve as useful guidelines as we move forward abating amphibian extinctions. Note: This is peer-reviewed yet not the final draft for publication. I thank the IUCN, SSC...
The preprint for the upcoming ACAP
Smithsonian Scholarly Press s m i t h s o n i a n c o n t r i b u t i o n s t o z o o l o g y • n u m b e r 6 5 3
The use of genome-scale data in phylogenetics has enabled recent strides in determining the relationships between taxa that are taxonomically problematic because of extensive morphological variation. Here, we employ a phylogenomic approach to infer evolutionary relationships within Ranitomeya (Anura: Dendrobatidae), an Amazonian lineage of poison f...
Taxonomic review of Ameerega andina (Myers and Burrowes, 1987)
Taxonomy Chapter 2 Alkaloids NH CI N Chapter 4
We describe the diet of Andinobates bombetes (Myers and Daly, 1980) based on stomach contents taken from sixty-nine individuals from three localities in the central northwestern Colombian Andes. 1471 individual prey items were found in the stomach contents from 16 taxonomic groups: arthropods (14), crustaceans (1) and mollusks (1). Taxonomic groups...
Cover design: Paintings of Ameerega yoshina (orange and red morphs) from a Field Guide to Aposematic Poison Frogs (Dendrobatidae) of the Andean Countries: Colombia, Bolivia, Ecuador, Peru and Venezuela © 2012 Ted R. Kahn FrogLog 100th Edition.
Paintings of Ameerega yoshina (orange and red morphs) from a Field Guide to Aposematic Poison Frogs (Dendrobatidae) of the Andean Countries: Colombia, Bolivia, Ecuador, Peru and Venezuela © 2012 Ted R. Kahn FrogLog 100 th Edition
The following article is general information on Melanophryniscus macrogranulosus and the 2010 adult congress rediscovery of this Nationally Critically Endangered toad. Actively calling males and amplicant pairs (males and females clasping) producing eggs were discovered. The authors further summarize climate conditions at the time of discovery and...
Neck flattening is a common defensive behavior in Xenodon. Herein is described cobra-like hooding and mouth-gaping as seen in an atypically monocle patterned specimen of Xenodon severus from Provincia de Napo, Ecuador. El aplanamiento del cuello es una forma común de comportamiento defensivo en Xenodon. Aquí describimos aplanamiento de capuchón sim...
Ecuador’s Yasun´ı Man and the Biosphere Reserve—located at the intersection of the Amazon, the Andes mountains, and the equator—is home to extraordinary biodiversity and a recently contacted Amazonian indigenous group known as the Waorani (or Huaorani). Relatives of the Waorani, the Tagaeri and Taromenane, still live in voluntary isolation deep in...
Two day workshop to design a conservation strategy to conserve Amphibians and form a strategy for their long-term survival including public outreach.
Workshop to develop the Global Amphibian Campaign (Now the International Conservation Union for the Conservation of Nature/IUCN Red List of Amphibians, and forerunner to the Amphibian Conservation Action Plan (ACAP).