期刊
GLOBAL CHANGE BIOLOGY
卷 26, 期 10, 页码 5431-5446出版社
WILEY
DOI: 10.1111/gcb.15266
关键词
acoustic communication; amphibians; climate change; Hylidae; passive acoustic monitoring; precipitation; relative humidity; reproduction
资金
- H2020 Marie Sklodowska-Curie Actions [EAVESTROP-661408]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [817737/2015, 88881.068425/2014-01]
- Ministerio de Economia y Competitividad [CGL2017-88764-R]
- Rufford Foundation [19808-1]
- Comunidad de Madrid [2016-T2/AMB-1722]
- Center for the study of biodiversity in Amazonia, LabEx CEBA [ANR-10-LABX-25-01]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo [2013/50421-2, 2017/15772-0, 2015/25316-6]
Climate change is severely altering precipitation regimes at local and global scales, yet the capacity of species to cope with these changes has been insufficiently examined. Amphibians are globally endangered and particularly sensitive to moisture conditions. For mating, most amphibian species rely on calling behaviour, which is a key weather-dependent trait. Using passive acoustics, we monitored the calling behaviour of two widespread Neotropical frogs in 12 populations located at the humidity extremes but thermal mean of the species distribution. Based on 2,554 hr of recordings over a breeding season, we found that both the aquatic speciesPseudis paradoxaand the arboreal speciesBoana ranicepsexhibited calling behaviour at a wide range of relative humidity. Calling humidity was significantly lower in conspecific populations subjected to drier conditions, while calling temperature did not differ between populations or species. Overall, no variation in climatic breadth was observed between large and small choruses, and calling behaviour was scarcely detected during the driest, hottest and coldest potential periods of breeding. Our results showed that calling humidity of the studied species varies according to the precipitation regime, suggesting that widespread Neotropical anurans may have the capacity to exhibit sexual displays in different climatic environments. Regardless of the underlying mechanism (plasticity or local adaptation), which should be determined by common garden experiments, a wide and population-specific climatic breadth of calling behaviour may assist species to deal with changing humidity conditions. To our knowledge, this is the first study to explore the response capacity of anurans to perform calling behaviour under contrasting precipitation regimes.
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