Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Phylogeography of Oligosarcus acutirostris (Characiformes: Characidae): testing biogeographic hypotheses in the Northeastern Mata Atlântica freshwater ecoregion

Full text
Author(s):
Vida Souza [1] ; Leonardo Oliveira-Silva [2] ; Rayana Tiago Dutra ; Priscila Camelier
Total Authors: 4
Affiliation:
[1] Universidade Federal da Bahia. Instituto de Biologia. Laboratório de Sistemática e Biogeografia Animal - Brasil
[2] Universidade Estadual Paulista. Departamento de Morfologia. Laboratorio de Biologia e Genética de Peixes - Brasil
Total Affiliations: 4
Document type: Journal article
Source: Neotropical Ichthyology; v. 21, n. 2 2023-06-23.
Abstract

Abstract The Northeastern Mata Atlântica freshwater ecoregion (NMAF) is recognized for the high degree of endemism of its ichthyofauna, whose evolutionary and biogeographic histories are still poorly understood. Oligosarcus acutirostris is a freshwater fish species endemic to the NMAF, which is distributed in coastal rivers and streams draining Bahia, Espírito Santo, and part of Minas Gerais states in eastern Brazil. Its widespread distribution in currently isolated river basins along the NMAF prompted this study, which aimed to understand what scenarios would be involved in determining its current distribution pattern, and to contribute to a better understanding of the biogeographic history of the NMAF. For this, mitochondrial and nuclear DNA sequences were analyzed based on samples from different localities along the species distribution, including its type locality. Overall, phylogeographic analyses indicate a strong genetic structure within the species evidenced mainly by the non-sharing of haplotypes between most of the basins analyzed. According to the AMOVA results, the current distribution of haplotypes is better explained by the Pleistocene coastal paleodrainages. The results are also used to test and complement a biogeographic hypothesis previously proposed for the drainages of the NMAF. (AU)

FAPESP's process: 16/03966-1 - Comparative phylogeography of freshwater fishes from the Atlantic Forest: a multilocus analysis in representatives of the family Characidae (Teleostei: Characiformes)
Grantee:Priscila Camelier de Assis Cardoso
Support Opportunities: Scholarships in Brazil - Post-Doctoral