Underestimated diversity in Characidium (Characiformes: Crenuchidae) from Neotropical rivers revealed by an integrative approach

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade Federal da Bahia (UFBA)-
Autor(es): dc.creatorOliveira-Silva, Leonardo-
Autor(es): dc.creatorBatalha-Filho, Henrique-
Autor(es): dc.creatorCamelier, Priscila-
Autor(es): dc.creatorZanata, Angela M.-
Data de aceite: dc.date.accessioned2025-08-21T16:28:41Z-
Data de disponibilização: dc.date.available2025-08-21T16:28:41Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1080/14772000.2024.2346510-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/306100-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/306100-
Descrição: dc.descriptionCharacidium represents the most widely distributed and species-rich fish genus within the family Crenuchidae in the Neotropical region, with numerous species described over the last decade. Despite this taxonomic progress, the understanding of species boundaries and population variation within the genus remains limited. In response, an integrative study was undertaken, utilizing both morphological and molecular data from neotropical freshwater ecoregions with rivers that drain the Brazilian northeastern. The primary objective of this investigation was to elucidate taxonomic delimitations and, where relevant, propose new species hypotheses. Our results propose the existence of 15 operational taxonomic units (OTUs) as species hypotheses. Among these, 10 were identified as valid species, four represented morphotypes that hold the potential of constituting new species, and one OTU was determined as a new species, corroborated by all proposed delimitation methods. Our results demonstrated discrepancies between morphological and molecular data, highlighting the challenges in defining taxonomic boundaries within Characidium. Moreover, our findings provided insights into the intricate diversification history of Characidium species, applied to the species that occur in northeastern Brazilian drainages. We proposed that historical events, such as river connections and barriers, have played a significant role in shaping the current distribution patterns of the genus.-
Descrição: dc.descriptionDepartamento de Biologia Estrutural e Funcional Instituto de Biociências Universidade Estadual Paulista, São Paulo-
Descrição: dc.descriptionPrograma de Pós-Graduação em Biodiversidade e Evolução Instituto de Biologia Universidade Federal da Bahia Rua Barão de Jeremoabo, Bahia-
Descrição: dc.descriptionDepartamento de Biologia Estrutural e Funcional Instituto de Biociências Universidade Estadual Paulista, São Paulo-
Idioma: dc.languageen-
Relação: dc.relationSystematics and Biodiversity-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBrazilian Shield-
Palavras-chave: dc.subjectCharacidiinae-
Palavras-chave: dc.subjectCOI marker-
Palavras-chave: dc.subjectfreshwater ecoregions-
Palavras-chave: dc.subjectmolecular systematics-
Título: dc.titleUnderestimated diversity in Characidium (Characiformes: Crenuchidae) from Neotropical rivers revealed by an integrative approach-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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