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  • Fouquet, AntoineUniversité Paul Sabatier (author)

Integrative species delimitation and biogeography of the Rhinella margaritifera species group (Amphibia, Anura, Bufonidae) suggest an intense diversification throughout Amazonia during the last 10 million years

  • Article/chapterEnglish2024

Publisher, publication year, extent ...

  • 2024

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:97ff5d02-9f8f-4975-8c4f-3973b4d2bfa6
  • https://lup.lub.lu.se/record/97ff5d02-9f8f-4975-8c4f-3973b4d2bfa6URI
  • https://doi.org/10.1080/14772000.2023.2291086DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • The accumulation of studies delimiting species in Amazonia has not only shed light on the patterns of its outstanding species richness but also allowed a better understanding of the processes of diversification within this immense region. Nevertheless, vast knowledge gaps remain even for prominent anuran species complexes, such as the Rhinella margaritifera species group. This clade of toads comprises 23 valid species-level taxa, mainly distributed in Amazonia but also in South America’s Dry Diagonal and Atlantic and trans-Andean rainforests. Species boundaries and taxonomy in this group are notoriously complex, with studies suggesting the existence of several unnamed species. Available phylogenetic information suggests an Andean-western Amazonian origin of the group with subsequent diversification within Amazonian lowlands during the last 10 Myr and secondary dispersals into other Neotropical regions. To further test this biogeographic scenario and improve knowledge on species diversity, we used an unprecedentedly large mtDNA sampling (>800 16S sequences) across the clade’s distribution and comprising all but one described species. We delimited 54 Molecular Operational Taxonomic Units, which we tested further based on patterns of variation of a nuclear locus and acoustic and morphological data. This approach confirmed the existence of at least 25 candidate species, 19 of which correspond to currently recognized taxa whereas 30 remained ‘unconfirmed’. Our results clarify the taxonomic status of some species but also suggest multiple introgression events that blur some mtDNA-based species boundaries. Lastly, to provide a temporal framework for the clade’s diversification, we generated a time-calibrated phylogenetic tree based on a mitogenomic matrix, which confirmed a Miocene (∼9 Ma) western Amazonian origin and six major clades in the group, each having initially diversified in different regions within Amazonia. Most of these clades have later dispersed throughout Amazonia during the establishment of the modern Amazonian hydrographic system, i.e., in the last 6 Myr.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Ferrão, MiqueiasHarvard University,Federal University of Goiás (author)
  • Rodrigues, Miguel T.University of São Paulo (author)
  • Werneck, Fernanda P.National Institute of Amazonian Research (author)
  • Prates, IvanLund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science(Swepub:lu)iv0171pr (author)
  • Moraes, Leandro J.C.L.University of São Paulo (author)
  • Hrbek, TomasTrinity University (author)
  • Chaparro, Juan C.Museo de Historia Natural, Cusco (author)
  • Lima, Albertina P.National Institute of Amazonian Research (author)
  • Perez, RenataFederal University of Ceará (author)
  • Pansonato, AndreFederal University of Mato Grosso do Sul (author)
  • Carvalho, Vinicius T.Federal University of Amazonas (UFAM) (author)
  • Almeida, Alexandre P.Federal University of Ceará (author)
  • Gordo, MarceloFederal University of Amazonas (UFAM) (author)
  • Farias, Izeni P.Federal University of Amazonas (UFAM) (author)
  • Milto, Konstantin D.Zoological Institute of the Russian Academy of Sciences (author)
  • Roberto, Igor J.Ceará State University (author)
  • Rojas, Rommel R.Universidad Nacional de la Amazonia Peruana (author)
  • Ron, Santiago R.Pontifical Catholic University Of Ecuador (author)
  • Guerra, ViniciusFederal University of Goiás (author)
  • Recoder, RenatoUniversity of São Paulo (author)
  • Camacho, AgustinUniversity of São Paulo (author)
  • Mamani, LuisUniversity of Concepción (author)
  • Rainha, Raissa N.National Institute of Amazonian Research (author)
  • Avila, Robson W.Federal University of Ceará (author)
  • Université Paul SabatierHarvard University (creator_code:org_t)

Related titles

  • In:Systematics and Biodiversity22:11477-2000

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