Molecular and morphological data of the freshwater fish Glandulocauda melanopleura (Characiformes: Characidae) provide evidences of river captures and local differentiation in the Brazilian Atlantic Forest

Author(s)

Camelier, Priscila ^[1] ; Menezes, Naercio Aquino ^[1] ; Costa-Silva, Guilherme Jose ^[2] ; Oliveira, Claudio ^[3]

Affiliation

^[1] Univ Sao Paulo, Museu Zool, Sao Paulo, SP - Brazil

^[2] Univ Santo Amaro, Rua Prof Eneas de Siqueira Neto, Sao Paulo, SP - Brazil

^[3] Univ Estadual Paulista, Inst Biociencias, Dept Morfol, Lab Biol & Genet Peixes, Botucatu, SP - Brazil

• Document type: Journal article
• Source: PLoS One; v. 13, n. 3 MAR 26 2018.
• Web of Science Citations: 3

Abstract

The current distribution of freshwater fishes across multiple basins along Eastern Brazil can be associated to two main events: river captures or temporary paleoconnections. Apparently, river captures had a more significant role on distribution and structuring of species from upland areas, such as Glandulocauda melanopleura. Populations of this species are found in contiguous drainages in presently isolated upper parts of Rio Tiete and the coastal basins of Guaratuba, Itatinga, Itanhaem, and Ribeira de Iguape, in the Atlantic Forest domain. The allopatric and disjoint distribution of G. melanopleura associated with variation of morphological characters detected among geographically isolated populations stimulated this study. Thus, an integrative approach was undertaken, including morphological and molecular data, to better understand the evolutionary history of the species and the area where it occurs. Molecular analyses based on two mitochondrial markers revealed a strong genetic structure within G. melanopleura, that allowed recognition of two lineages, one distributed in both the upper Tiete and Itanhaem and the other in the Guaratuba. Overall, morphological data revealed some intraspecific overlapping variation, indicating that all samples are conspecific. Phylogenetic and phylogeographic analyses allied to divergence times and geomorphological information indicate that the current distribution of G. melanopleura is a result of relatively recent river captures involving the Tiete and some other coastal drainages. Although of recent origin, they occurred long enough to completely isolate these populations, since there are no haplotypes sharing between them. The conservation status of this species is also discussed, and our results corroborate the need to understand population structure for conservation planning. (AU)

• FAPESP's process: 12/00840-6 - Speciation and biogeography in the genera Glandulocauda Eigenmann and Mimagoniates Regan (Characiformes: Characidae: Glandulocaudinae)
• Grantee: Priscila Camelier de Assis Cardoso
• Support Opportunities: Scholarships in Brazil - Doctorate
• 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
• FAPESP's process: 14/26508-3 - Phylogeny of the hyperdiverse order Characiformes (Teleostei: Ostariophysi) using ultraconserved elements
• Grantee: Claudio de Oliveira
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 11/50282-7 - An inventory of the Characiform fish fauna (Teleostei, Ostariophysi) from South America
• Grantee: Naercio Aquino Menezes
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants