Professor Jonathan Twining Published in Journal of Mesoamerican Herpetology
Published: 2017-04-12

Assistant Professor of Biology Jonathan Twining has just had his first peer-reviewed article published in the Journal of Mesoamerican Herpetology . The paper, entitled "Temporal and spectral analysis of the advertisement call of Craugastor stejnegerianus (Anura: Craugastoridae) in Costa Rica" was coauthored with Dr. John Cossel, Jr., Professor of Biology at Northwest Nazarene University. 

The piece catalogs the work conducted by Twining and Cossel at the Hacienda Baru National Wildlife Refuge in May of 2015, during which the vocalizations of Craugastor stejnegerianus were recorded and formally analyzed for the first time. This species of frog, native to Costa Rica, has been discussed in literature in the past, but no formal analysis of their advertisement call has been made. Twining and Cossel collected a total of 106 call recordings from 8 frogs which were analyzed in terms of their duration, interval and frequency.

Professor Twining and Dr. Cossel have been working together since 2014, with projects such as their research on the Idaho giant salamander and similar studies in Costa Rica. While Twining states that his work with Cossel up until this point has largely consisted of observing his research methods as well as video documentation, this paper represents their first collaborative effort on a scientific research project. Dr. Cossel has focused heavily on studies in Costa Rica, with seven peer-reviewed publications from the country alone. Like Professor Twining, his focus is currently on herpetofauna and bioacoustics, as well as the implementation of photography into conservation efforts, having presented his "Naked Canaries" photographic exhibit at ENC in 2015.

Professor Twining will return to Costa Rica this May for further studies at the Hacienda Baru National Wildlife Refuge: "We plan to continue our work on the bioacoustics of the frog genus Craugastor in the summer of 2017, and Kelly Di Stefano will be participating in that research."

Related at ENC: Biology

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