Integrative taxonomy reveals a new species of Characidium (Characiformes: Crenuchidae) shared by tributaries of upper Tapajos and Xingu river basins, Brazil

Autor(es)

Zanata, Angela Maria ; Oliveira, Claudio ; Oliveira-Silva, Leonardo

• Tipo de documento: Artigo Científico
• Fonte: Journal of Fish Biology; v. N/A, p. 10-pg., 2024-09-22.

Resumo

A new species of Characidium shared by adjacent tributaries of the upper portions of the Tapajos and Xingu river basins is described. Characidium varii, new species, can be distinguished from the congeners by having distinctly speckled pattern of colouration, including dark blotches on cheek and ventral surface of head, by having conspicuous dark marks on fins, along with a single row of dentary teeth, isthmus completely covered by scales, 14 circumpeduncular scales, and swimbladder reduced. Molecular data reinforce the validation of the new species. The distribution of C. varii supports the hypothesis of the existence of a faunistic mixing between Tapajos and Xingu river basins, corresponding to the region of the Serra do Cachimbo and surrounding areas, previously proposed in the literature. (AU)

• Processo FAPESP: 20/13433-6 - Filogenia e identificação molecular de peixes da superordem Ostariophysi (Chordata: Actinopterygii) utilizando abordagens genômicas
• Beneficiário: Claudio de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 11/50282-7 - Inventário da fauna de Characiformes (Teleostei, Ostariophysi) da América do Sul
• Beneficiário: Naercio Aquino Menezes
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 23/09871-6 - Desvendando a diversidade e as origens do gênero Characidium (Characiformes: Crenuchidae) na região Neotropical: um estudo de Sistemática e Biogeografia com abordagem genômica e integrativa
• Beneficiário: Leonardo Oliveira Silva
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado