Climatic breadth of calling behaviour in two widespread Neotropical frogs: insights from humidity extremes

Type Article
Date 2020-10
Language English
Author(s) Bonnefond Anaïs1, Courtois Elodie A.1, Sueur Jérôme2, Sugai Larissa Sayuri Moreira3, 4, Llusia Diego4, 5, 6
Affiliation(s) 1 : LEEISA UMSR 3456CNRS ‐ UG – Ifremer; Centre de recherche Montabo 275 Route de Montabo BP 70620 97300 Cayenne French Guiana
2 : Institut de SystématiqueÉvolution, Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS, Sorbonne Université, EPHE 57 rue Cuvier 75005 Paris France
3 : Instituto de Biociências Universidade Estadual Paulista (UNESP) 13506‐900 Rio Claro São Paulo, Brazil
4 : Departamento de EcologíaTerrestrial Ecology Group Universidad Autónoma de Madrid (UAM), C/ Darwin 2, E‐28049, Ciudad Universitaria de Cantoblanco Madrid Spain
5 : Centro de Investigación en Biodiversidad y Cambio Global (CIBC‐UAM) Universidad Autónoma de Madrid, C/ Darwin 2, E‐28049, Ciudad Universitaria de Cantoblanco Madrid, Spain
6 : Departamento de EcologiaLaboratório de Herpetologia e Comportamento Animal, Instituto de Ciências Biológicas, Universidade Federal de Goiás (UFG) Avenida Esperança 74001‐970 Goiânia GO ,Brazil
Source Global Change Biology (1354-1013) (Wiley), 2020-10 , Vol. 26 , N. 10 , P. 5431-5446
DOI 10.1111/gcb.15266
Keyword(s) acoustic communication, amphibians, climate change, Hylidae, passive acoustic monitoring, precipitation, relative humidity, reproduction

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 widely distributed Neotropical frogs in 12 populations located at the humidity extremes but thermal mean of the species distribution. Based on 2,554 hours of recordings over a breeding season, we found that both the arboreal species Boana raniceps and the aquatic species Pseudis paradoxa exhibited 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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Bonnefond Anaïs, Courtois Elodie A., Sueur Jérôme, Sugai Larissa Sayuri Moreira, Llusia Diego (2020). Climatic breadth of calling behaviour in two widespread Neotropical frogs: insights from humidity extremes. Global Change Biology, 26(10), 5431-5446. Publisher's official version : , Open Access version :