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Diseases of Aquatic Organisms

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DAO 127:193-200 (2018)  -  DOI:

Occurrence of Batrachochytrium dendrobatidis in anurans of the Mediterranean region of Baja California, México

Anny Peralta-García1,2,*, Andrea J. Adams3, Cheryl J. Briggs3, Patricia Galina-Tessaro1, Jorge H. Valdez-Villavicencio2, Bradford D. Hollingsworth4, H. Bradley Shaffer5, Robert N. Fisher6

1Centro de Investigaciones Biológicas de Noroeste, La Paz, Baja California Sur 23096, México
2Conservación de Fauna del Noroeste, Ensenada, Baja California 22785, México
3Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, California 93106, USA
4Department of Herpetology, San Diego Natural History Museum, San Diego, California 92101, USA
5Department of Ecology and Evolutionary Biology, and La Kretz Center for California Conservation Science, Institute of the Environment and Sustainability, University of California, Los Angeles, California 90095, USA
6US Geological Survey, Western Ecological Research Center, San Diego, California 92101, USA
*Corresponding author:

ABSTRACT: Chytridiomycosis is caused by the fungal pathogen Batrachochytrium dendrobatidis (Bd) and is regarded as one of the most significant threats to global amphibian populations. In México, Bd was first reported in 2003 and has now been documented in 13 states. We visited 33 localities and swabbed 199 wild-caught anurans from 7 species (5 native, 2 exotic) across the Mediterranean region of the state of Baja California. Using quantitative PCR, Bd was detected in 94 individuals (47.2% of samples) at 25 of the 33 survey localities for 5 native and 1 exotic frog species. The exotic Xenopus laevis was the only species that tested completely negative for Bd. We found that remoteness, distance to agricultural land, and elevation were the best positive predictors of Bd presence. These are the first Bd-positive results for the state of Baja California, and its presence should be regarded as an additional conservation threat to the region’s native frog species.

KEY WORDS: Chytridiomycosis · Northwestern México · Amphibians · Diseases · Threats

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Cite this article as: Peralta-García A, Adams AJ, Briggs CJ, Galina-Tessaro P and others (2018) Occurrence of Batrachochytrium dendrobatidis in anurans of the Mediterranean region of Baja California, México. Dis Aquat Org 127:193-200.

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