The advertisement calls of brazilian anurans: historical review, current knowledge and future directions
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2018-01
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Advertisement calls are often used as essential basic information in studies of animal
behaviour, ecology, evolution, conservation, taxonomy or biodiversity inventories. Yet the
description of this type of acoustic signals is far to be completed, especially in tropical
regions, and is frequently non-standardized or limited in information, restricting the application
of bioacoustics in science. Here we conducted a scientometric review of the described
adverstisement calls of anuran species of Brazil, the world richest territory in anurans, to
evaluate the amount, standard and trends of the knowledge on this key life-history trait and
to identify gaps and directions for future research strategies. Based on our review, 607 studies
have been published between 1960 to 2016 describing the calls of 719 Brazilian anuran
species (68.8% of all species), a publication rate of 10.6 descriptions per year. From each of
these studies, thirty-one variables were recorded and examined with descriptive and inferential
statistics. In spite of an exponential rise over the last six decades in the number of
studies, described calls, and quantity of published metadata, as revealed by regression
models, clear shortfalls were identified with regard to anuran families, biomes, and categories
of threat. More than 55% of these species belong to the two richest families, Hylidae or
Leptodactylidae. The lowest percentage of species with described calls corresponds to the
most diverse biomes, namely Atlantic Forest (65.1%) and Amazon (71.5%), and to the
IUCN categories of threat (56.8%), relative to the less-than-threatened categories (74.3%).
Moreover, only 52.3% of the species have some of its calls deposited in the main scientific
sound collections. Our findings evidence remarkable knowledge gaps on advertisement
calls of Brazilian anuran species, emphasizing the need of further efforts in standardizing and increasing the description of anuran calls for their application in studies of the behaviour,
ecology, biogeography or taxonomy of the species.
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GUERRA, Vinicius; LLUSIA, Diego; GAMBALE, Priscilla Guedes; MORAIS, Alessandro Ribeiro de; MÁRQUEZ, Rafael; BASTOS, Rogério Pereira. The advertisement calls of brazilian anurans: historical review, current knowledge and future directions. PLoS One, San Francisco, v. 13, e0191691, 2018. DOI: 10.1371/journal.pone.0191691. Disponível em: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0191691. Acesso em: 08 mar. 2023.