Acoustic and morphological dataset of seven anuran populations of two species from highland forests in Northeastern Brazil
Data files
Apr 29, 2024 version files 38.38 KB
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AcousticData.xlsx
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MorphologicalData.xlsx
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README.md
Abstract
Highlands are of paramount importance to the study of evolution as they are frequently implicated in historical and ecological processes that generate and maintain biological diversity. In northeastern Brazil, sparse rainforest remnants are located in highlands north of the São Francisco River, generally surrounded by the dry and open landscape of the Caatinga biome. Earlier studies suggest that these forests acted as historical refuges to the rainforest fauna and flora, especially during the climatic cycles of the Pleistocene. However, it is still unclear whether populations distributed in distinct highlands experienced phenotypic differentiation as a result of adaptation to the environmental conditions of each forest remnant. In this study, we used two frog species with wide geographic distributions, Dendropsophus oliveirai, a habitat specialist which breeds in permanent ponds, and Physalaemus cuvieri, a habitat generalist which breeds in temporary and permanent lentic environments, as models to investigate the relationships between environmental variation, geographic, genetic, and body size distance with advertisement call variation among populations inhabiting different highlands. We hypothesized that call variation would be strongly influenced by local environmental conditions, as sound signals are frequently adapted to the transmission environment. Our results indicate that acoustic variation among P. cuvieri populations is strongly influenced by environmental variation and moderate by geographic distance. In D. oliveirai, the environment is also the most influential factor in acoustic variation, followed by genetic and morphological variation. Besides that, the association between environmental and geographic factors suggests an indirect effect of geographic distance on acoustic variation in both species through an environmental gradient and also in genetic traits of the habitat specialist species. We believe that selective processes and isolation possibly act together in driving interpopulational acoustic variation with habitat-specific species being more affected by the isolation in suitable habitats.
README: Acoustic and morphological dataset of seven anuran populations of two species from highland forests in Northeastern Brazil
We have submitted our raw data (AcousticData.xlsx) and (MorphologicalData.xlsx)
Overview of Data
The measurements of both species are in the same file but in different spreadsheets.
Abbreviations:
Acoustic Data
- D.oliveirai: Dendropsophus oliveirai
- P.cuvieri: Physalaemus cuvieri
- Locality: localities where the data was collected
- Individual(Collection/Field): vouchers of the collected individuals for the scientific collection and field
- SLV(mm): snout-vent length in mm
Morphological Data
- D.oliveirai: Dendropsophus oliveirai (Currently valid scientific name)
- P.cuvieri: Physalaemus cuvieri (Currently valid scientific name)
- Locality: localities where the data was collected
- Individual(Collection/Field): vouchers of the collected individuals for the scientific collection and field
- ND(ms): note duration in ms
- LF(Hz): low frequency in Hz
- UF(Hz): upper frequency in Hz
- BW(Hz): bandwidth of frequency in Hz
Methods
Study site and population
Seven localities in Borborema Plateau: Parque Nacional do Catimbau (Catimbau; 08°34’20.60” S, 37°14’12.30” W), Fazenda Vale Tabocas (Tabocas; 08°14’47.5” S, 36°22’46.00” W), Refúgio de Vida Silvestre Morros do Craunã e do Padre (Craunã; 09°20’47.90” S, 37°52’60.00” W), Parque Estadual Mata do Pau-Ferro (Pau-Ferro; 06°58’12.53” S, 35°43’04.27” W), Refúgio de Vida Silvestre Matas do Siriji (Matas do Siriji; 07°37’01.79” S, 35°30’27.84” W), Parque Natural Municipal Professor João Vasconcelos Sobrinho (João Vasconcelos; 08°21’8.80” S, 36°01’51.60” W), Reserva Biológica de Pedra Talhada (Pedra Talhada; 09°15’40.94” S, 36°26’20.22” W). We collected data in the field between 2021 and 2023. These localities are subumid and umid forests (Atlantic Forests remnants) in high altitudes inside a matrix of dry vegetation (Caatinga).
Species
Dendropsophus oliveirai and Physalaemus cuvieri (Currently valid scientific name)
Descriptions
The data could be used in future investigations about phenotypic variations (in morphology and bioacoustic) in populations occurring in mountain ranges in Northeastern Brazil.
Acoustic data obtainment
We recorded advertisement calls of males using digital recorders: Tascam Dr-05x Linear PCM, Zoom H1n 120GL, or Marantz PMD620. Then we analysed the records using the software Raven Pro 1.6 (K. Lisa Yang Center for Conservation Bioacoustics, 2023). The acoustic parameters of both species are in the same file but in different spreadsheets.
Each row in this data corresponds to an average of each acoustic parameter for each individual calculated from 5-18 (D.oliveirai)/ 6-10 (P.cuvieri) calls. That initial data is not provided here because it is part of another study that is still not submitted.
Morphological data obtainment
We measured the euthanized individuals deposited at Coleção Herpetológica da Universidade Federal de Pernambuco, using a calipter and a stereoscope.