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Species diversity and biogeography of an ancient frog clade from the Guiana Shield (Anura: Microhylidae: Adelastes, Otophryne, Synapturanus) exhibiting spectacular phenotypic diversification
- Source :
- Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual), Universidade de São Paulo (USP), instacron:USP, Biological Journal of the Linnean Society`, Biological Journal of the Linnean Society, Biological Journal of the Linnean Society, Linnean Society of London, 2021, 132 (2), pp.233-256. ⟨10.1093/biolinnean/blaa204⟩
- Publication Year :
- 2021
- Publisher :
- Oxford University Press (OUP), 2021.
-
Abstract
- The outstanding biodiversity of the Guiana Shield has raised many questions about its origins and evolution. Frogs of the genera Adelastes, Otophryne and Synapturanus form an ancient lineage distributed mostly across this region. These genera display strikingly disparate morphologies and life-history traits. Notably, Synapturanus is conspicuously adapted to fossoriality and is the only genus within this group to have dispersed further into Amazonia. Moreover, morphological differences among Synapturanus species suggest different degrees of fossoriality that might be linked to their biogeographical history. Through integrative analysis of genetic, morphometric and acoustic data, we delimited 25 species in this clade, representing a fourfold increase. We found that the entire clade started to diversify ~55 Mya and Synapturanus ~30 Mya. Members of this genus probably dispersed three times out of the Guiana Shield both before and after the Pebas system, a wetland ecosystem occupying most of Western Amazonia during the Miocene. Using a three-dimensional osteological dataset, we characterized a high morphological disparity across the three genera. Within Synapturanus, we further characterized distinct phenotypes that emerged concomitantly with dispersals during the Miocene and possibly represent adaptations to different habitats, such as soils with different physical properties.<br />Agence Nationale de la Recherche (CEBA, ref. ANR-10-LABX-25-01), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq #140716/2016-5; 305535/2017-0; PQ 302501/2019-3; PQ 303070/2017-0
- Subjects :
- 0106 biological sciences
0301 basic medicine
Microhylidae
biology
Biogeography
Species diversity
Amazonia – Amphibia – integrative taxonomy – micro-computed tomography – mitogenomics
15. Life on land
Otophryne
Diversification (marketing strategy)
biology.organism_classification
010603 evolutionary biology
01 natural sciences
03 medical and health sciences
030104 developmental biology
Evolutionary biology
[SDE]Environmental Sciences
BIOGEOGRAFIA
Clade
Synapturanus
Ecology, Evolution, Behavior and Systematics
Subjects
Details
- ISSN :
- 10958312 and 00244066
- Volume :
- 132
- Database :
- OpenAIRE
- Journal :
- Biological Journal of the Linnean Society
- Accession number :
- edsair.doi.dedup.....d4cd6ce35d1811dbd9c16828ba1e3201