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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fishes from the Serra Geral do Tocantins Ecological Station, Rio Tocantins and Rio São Francisco basins, with remarks on the biogeographical implications of the common headwater between the Rio Sapão and Rio Galheiros

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Author(s):
Flávio César Thadeo de Lima [1] ; Rodrigo Antunes Caires [2]
Total Authors: 2
Affiliation:
[1] Universidade de São Paulo - Brasil
[2] Universidade de São Paulo - Brasil
Total Affiliations: 2
Document type: Journal article
Source: Biota Neotropica; v. 11, n. 1, p. 231-250, 2011-03-00.
Abstract

A preliminary ichthyofaunistic survey conducted at the Serra Geral de Tocantins Ecological Station (Southeastern Tocantins and Northwest Bahia States, central Brazil) is presented. This Ecological Station is situated at the water divide between the Rio São Francisco basin (Rio Sapão) and Rio Tocantins (Rio Novo, Rio Balsas, and Rio Manuel Alves da Natividade basins). A common headwater ("água emendada") between the Rio Sapão and the Rio Galheiros (the latter a tributary of the Rio Novo) lies within the station boundaries and is considered in the literature as a potential area of faunistic interchange between the Rio São Francisco and the Rio Tocantins basins. Thirty-five fish species were recorded within the Serra Geral de Tocantins Ecological Station and at its immediate surroundings, some of which unknown to science and potentially endemic to the area. A total of 111 fish species were regionally recorded (i.e., including fish species recorded at downstream stretches of the Rio Sapão and Rio Novo/do Sono, below the ecological station). The cichlid Cichlasoma sanctifranciscense is here recorded for the first time for the Rio Tocantins basin. The occurrence of this species, as well as of the characin Astyanax novae in both the Rio Sapão and Rio Novo/do Sono basins, are here considered to be the only unequivocal examples of fish species that naturally transposed the water divide between the Rio São Francisco and the Rio Tocantins basins effected by the common headwater between Rio Sapão and Rio Galheiros. (AU)

FAPESP's process: 07/02978-7 - Systematics of Brycon (Teleostei: Ostariophysi: Characiformes: Characidae) genus: taxonomic revision of species from trans-Andean South America and Central America and Brycon pesu complex and Bryconinae phylogeny and biogeography
Grantee:Flávio César Thadeo de Lima
Support Opportunities: Scholarships in Brazil - Post-Doctoral