Autor(es)

Lopes, Ueslei ; Galetti, Pedro M., Jr. ; Domingues de Freitas, Patricia

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 15, n. 8, p. 12-pg., 2020-08-25.

Resumo

Highly spread through the Amazon River basin,Prochilodus nigricanshave had its taxonomic validity recently questioned, when genetic differences between Western and Eastern Amazon populations from the Brazilian shield were detected. This area has been seeing as a region of high ichthyofaunal diversity and endemism, in which the hybrid origin of the Tapajos River basin has been raised. In this paper, we report a new molecular lineage withinP.nigricansof Tapajos River, highlighting this region still hides taxonomically significant diversity. Haplotype networks were reconstructed using the mitochondrial COI and ATP6/8 markers, which were also used to calculate genetic distances among clusters. We additionally conducted a delimiting species approach by employing a Generalized Mixed Yule-Coalescent model (GMYC) with COI sequences produced here, and previous ones published for individuals sampled across the Amazon River basin. In addition to the genetic differentiation withinP.nigricans, our findings favor the hypothesis of hybrid origin of the Tapajos River basin and reaffirm the importance of studies aiming to investigate hidden diversity to address taxonomic and biogeographic issues, that certainly benefit better biodiversity conservation actions. (AU)

• Processo FAPESP: 10/52315-7 - Predadores de topo de cadeia alimentar (sisbiota)
• Beneficiário: Pedro Manoel Galetti Junior
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Regular