The lost jackals from the Brazilian caves: insights on the taxonomy and paleoecology of Pleistocene bush dog Speothos pacivorus (Carnivora, Canidae)

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorEberhard Karls University of Tübingen-
Autor(es): dc.contributorSenckenberg Centre for Human Evolution and Palaeoenvironment at the University of Tübingen-
Autor(es): dc.contributorOklahoma State University-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorStony Brook University-
Autor(es): dc.contributorTechnical University of Denmark-
Autor(es): dc.contributorUniversidade Federal de Catalão-
Autor(es): dc.creatorRuiz, Juan V.-
Autor(es): dc.creatorFerreira, Gabriel S.-
Autor(es): dc.creatorMachado, Fabio A.-
Autor(es): dc.creatorKyriakouli, Christina-
Autor(es): dc.creatorGodoy, Pedro L.-
Autor(es): dc.creatorGundlach, Carsten-
Autor(es): dc.creatorCastro, Mariela C.-
Autor(es): dc.creatorMontefeltro, Felipe C.-
Data de aceite: dc.date.accessioned2025-08-21T15:46:09Z-
Data de disponibilização: dc.date.available2025-08-21T15:46:09Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1080/02724634.2024.2438827-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/299683-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/299683-
Descrição: dc.descriptionSpeothos pacivorus from the Pleistocene of Brazilian Intertropical Region (BIR) is distinguished from the extant bush dog S. venaticus by its larger size and key characters of the skeleton and teeth. Nonetheless, its taxonomic status is volatile, with some authors still considering both species as synonymous. Here, we aimed to summarize morphofunctional differences between S. pacivorus and S. venaticus through a comparative description of their skull and dentition, geometric morphometric analysis (GMM), and finite element analysis (FEA). Our GMM revealed S. pacivorus significantly separated from the sampled specimens of S. venaticus, and a regression analysis showed that the morphological differences of its cranium are not size-related, reinforcing its status as a separate species. Both exhibited very akin von Mises’ stress average and distribution on FEA’s results, suggesting similar prey-capturing strategies. Our results bolster the hypothesis that the coexistence of these hypercarnivorous canids in the BIR could be explained by a diverse megaherbivore community, allowing resource partitioning between different canid species. Following the demise of these megaherbivores in the Pleistocene–Holocene boundary, other large hypercarnivorous canids also became extinct, leaving the small S. venaticus, able to subsist on smaller prey, as the sole surviving species of this specialized lineage.-
Descrição: dc.descriptionLaboratório de Paleontologia e Evolução de Ilha Solteira UNESP, São Paulo-
Descrição: dc.descriptionPrograma de Pós-Graduação em Biodiversidade UNESP, São Paulo-
Descrição: dc.descriptionEberhard Karls University of Tübingen, Baden-Württemberg-
Descrição: dc.descriptionSenckenberg Centre for Human Evolution and Palaeoenvironment at the University of Tübingen, Baden-Württemberg-
Descrição: dc.descriptionDepartment of Integrative Biology Oklahoma State University-
Descrição: dc.descriptionDepartment of Zoology Institute of Biosciences University of São Paulo, São Paulo-
Descrição: dc.descriptionDepartment of Anatomical Sciences Stony Brook University-
Descrição: dc.descriptionDepartment of Physics Technical University of Denmark-
Descrição: dc.description3D Imaging Centre Technical University of Denmark-
Descrição: dc.descriptionLaboratório de Biologia Integrativa e Conservação Universidade Federal de Catalão, Goiás-
Descrição: dc.descriptionLaboratório de Paleontologia e Evolução de Ilha Solteira UNESP, São Paulo-
Descrição: dc.descriptionPrograma de Pós-Graduação em Biodiversidade UNESP, São Paulo-
Idioma: dc.languageen-
Relação: dc.relationJournal of Vertebrate Paleontology-
???dc.source???: dc.sourceScopus-
Título: dc.titleThe lost jackals from the Brazilian caves: insights on the taxonomy and paleoecology of Pleistocene bush dog Speothos pacivorus (Carnivora, Canidae)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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