Male frogs emit stereotypical advertisement calls to attractmates and deter conspecific rivals.The evolution of these calls is thought to be linked to anatomical constraints and the acoustic characteristics of their s...Male frogs emit stereotypical advertisement calls to attractmates and deter conspecific rivals.The evolution of these calls is thought to be linked to anatomical constraints and the acoustic characteristics of their surroundings.The acoustic adaptation hypothesis(AAH)posits that species evolve calls that maximize propagation distance and reduce signal degradation in the environmentwhere they are emitted.We applied phylogenetic comparative analyses to study the association of body size,vegetation density,type of aquatic ecosystem,and calling site on the evolution of acoustic traits in Cophomantini,a large radiation of Neotropical treefrogs(Hylidae).We obtained and analyzed body size,acoustic,and habitat data from a total of 112 species(58%of Cophomantini),using themost inclusive available phylogeny.We found a significant negative correlation between peak frequency,body size,and calling site,but contrary to the predictions of the AAH,we did not find support for associations among call traits and environmental characteristics.Although spectral allometry is explained by an anatomical constraint,it could also be maintained by female choice.We recommend that future studies strive to incorporate factors such as female mate preferences,eavesdropping by predators or parasites,and genetic drift.展开更多
基金supported by Conselho Nacional de Desenvolvimento Cientifico e Tecnologico(CNPq,ref.140815/2018-0)Society of Systematic Biology(SSB-GSRA 2018)+6 种基金Programa para el Desarrollo de la Ciencias Basicas(PEDECIBA)Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul(FAPERGS,23/2551-0001938-8)Maxwell/hanrahan FoundationFonds voor Wetenschappelijk Onderzoek(FWO12A7614N and FWO12A7617N)Marie Skłodowska-Curie Actions(MSCA,101022238/HOSTILE)Fundacao de Amparo a Pesquisa do Estado de Sao Paulo(FAPESP,#2018/18473-6 and#2022/02789-0)Junta de Andalucia(EMERGIA20_38444).
文摘Male frogs emit stereotypical advertisement calls to attractmates and deter conspecific rivals.The evolution of these calls is thought to be linked to anatomical constraints and the acoustic characteristics of their surroundings.The acoustic adaptation hypothesis(AAH)posits that species evolve calls that maximize propagation distance and reduce signal degradation in the environmentwhere they are emitted.We applied phylogenetic comparative analyses to study the association of body size,vegetation density,type of aquatic ecosystem,and calling site on the evolution of acoustic traits in Cophomantini,a large radiation of Neotropical treefrogs(Hylidae).We obtained and analyzed body size,acoustic,and habitat data from a total of 112 species(58%of Cophomantini),using themost inclusive available phylogeny.We found a significant negative correlation between peak frequency,body size,and calling site,but contrary to the predictions of the AAH,we did not find support for associations among call traits and environmental characteristics.Although spectral allometry is explained by an anatomical constraint,it could also be maintained by female choice.We recommend that future studies strive to incorporate factors such as female mate preferences,eavesdropping by predators or parasites,and genetic drift.
