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Belasen AM, Peek RA, Adams AJ, Russell ID, De León ME, Adams MJ, Bettaso J, Breedveld KGH, Catenazzi A, Dillingham CP, Grear DA, Halstead BJ, Johnson PG, Kleeman PM, Koo MS, Koppl CW, Lauder JD, Padgett-Flohr G, Piovia-Scott J, Pope KL, Vredenburg V, Westphal M, Wiseman K, Kupferberg SJ. Chytrid infections exhibit historical spread and contemporary seasonality in a declining stream-breeding frog. R Soc Open Sci 2024; 11:231270. [PMID: 38298390 PMCID: PMC10827429 DOI: 10.1098/rsos.231270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 12/18/2023] [Indexed: 02/02/2024]
Abstract
Species with extensive geographical ranges pose special challenges to assessing drivers of wildlife disease, necessitating collaborative and large-scale analyses. The imperilled foothill yellow-legged frog (Rana boylii) inhabits a wide geographical range and variable conditions in rivers of California and Oregon (USA), and is considered threatened by the pathogen Batrachochytrium dendrobatidis (Bd). To assess drivers of Bd infections over time and space, we compiled over 2000 datapoints from R. boylii museum specimens (collected 1897-2005) and field samples (2005-2021) spanning 9° of latitude. We observed a south-to-north spread of Bd detections beginning in the 1940s and increase in prevalence from the 1940s to 1970s, coinciding with extirpation from southern latitudes. We detected eight high-prevalence geographical clusters through time that span the species' geographical range. Field-sampled male R. boylii exhibited the highest prevalence, and juveniles sampled in autumn exhibited the highest loads. Bd infection risk was highest in lower elevation rain-dominated watersheds, and with cool temperatures and low stream-flow conditions at the end of the dry season. Through a holistic assessment of relationships between infection risk, geographical context and time, we identify the locations and time periods where Bd mitigation and monitoring will be critical for conservation of this imperilled species.
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Affiliation(s)
- A. M. Belasen
- Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA
- Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, USA
| | - R. A. Peek
- California Department of Fish and Wildlife, West Sacramento, CA, USA
| | - A. J. Adams
- Earth Research Institute, University of California, Santa Barbara, CA, USA
| | - I. D. Russell
- Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA, USA
| | - M. E. De León
- Genome Center, University of California, Davis, CA, USA
| | - M. J. Adams
- U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, Corvallis, OR, USA
| | - J. Bettaso
- Six Rivers National Forest, Lower Trinity Ranger District, USDA Forest Service, P.O. Box 68, Willow Creek, CA, USA
| | | | - A. Catenazzi
- Department of Biological Sciences, Florida International University, Miami, FL, USA
| | | | - D. A. Grear
- U.S. Geological Survey, National Wildlife Health Center, Madison, WI, USA
| | - B. J. Halstead
- Point Reyes Field Station, U.S. Geological Survey, Western Ecological Research Center, Point Reyes Station, CA, USA
| | - P. G. Johnson
- Pinnacles National Park, National Park Service, Paicines, CA, USA
| | - P. M. Kleeman
- Point Reyes Field Station, U.S. Geological Survey, Western Ecological Research Center, Point Reyes Station, CA, USA
| | - M. S. Koo
- Museum of Vertebrate Zoology, University of California, Berkeley, CA
| | - C. W. Koppl
- Plumas National Forest, USDA Forest Service, Quincy, CA, USA
| | | | | | - J. Piovia-Scott
- School of Biological Sciences, Washington State University, Vancouver, WA, USA
| | - K. L. Pope
- Pacific Southwest Research Station, USDA Forest Service, Arcata, CA, USA
| | - V. Vredenburg
- Department of Biology, San Francisco State University, San Francisco, CA, USA
| | - M. Westphal
- Central Coast Field Office, United States Bureau of Land Management, Marina, CA, USA
| | - K. Wiseman
- Department of Herpetology, California Academy of Sciences, San Francisco, CA, USA
| | - S. J. Kupferberg
- Department of Integrative Biology, University of California, Berkeley, CA, USA
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Jenkinson TS, Betancourt Román CM, Lambertini C, Valencia‐Aguilar A, Rodriguez D, Nunes‐de‐Almeida CHL, Ruggeri J, Belasen AM, Silva Leite D, Zamudio KR, Longcore JE, Toledo LF, James TY. Amphibian‐killing chytrid in
B
razil comprises both locally endemic and globally expanding populations. Mol Ecol 2016; 25:2978-96. [DOI: 10.1111/mec.13599] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 02/16/2016] [Accepted: 02/23/2016] [Indexed: 01/13/2023]
Affiliation(s)
- T. S. Jenkinson
- Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109 USA
| | - C. M. Betancourt Román
- Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109 USA
| | - C. Lambertini
- Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB) Departamento de Biologia Animal Instituto de Biologia Universidade Estadual de Campinas Campinas SP 13083‐862 Brasil
| | - A. Valencia‐Aguilar
- Programa de Pós‐Graduação em Diversidade Biológica e Conservação nos Trópicos Instituto de Ciências Biológicas e da Saúde Universidade Federal de Alagoas Maceió AL 57052‐970 Brasil
| | - D. Rodriguez
- Department of Biology Texas State University San Marcos TX 78666 USA
| | - C. H. L. Nunes‐de‐Almeida
- Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB) Departamento de Biologia Animal Instituto de Biologia Universidade Estadual de Campinas Campinas SP 13083‐862 Brasil
| | - J. Ruggeri
- Laboratório de Anfíbios e Répteis Departamento de Zoologia Instituto de Biologia Universidade Federal do Rio de Janeiro Rio de Janeiro RJ 21941‐902 Brasil
| | - A. M. Belasen
- Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109 USA
| | - D. Silva Leite
- Laboratório de Antígenos Bacterianos Departamento de Genética, Evolução e Bioagentes Instituto de Biologia Universidade Estadual de Campinas Campinas SP 13083‐862 Brasil
| | - K. R. Zamudio
- Department of Ecology and Evolutionary Biology Cornell University Ithaca NY 14853 USA
| | - J. E. Longcore
- School of Biology and Ecology University of Maine Orono ME 04469 USA
| | - L. F. Toledo
- Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB) Departamento de Biologia Animal Instituto de Biologia Universidade Estadual de Campinas Campinas SP 13083‐862 Brasil
| | - T. Y. James
- Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109 USA
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