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Rhamdia branneri Haseman, 1911

Image contributors to this species:

Ribolli, J., et al. 2017 (1)

ScotCat Sources:

Other Sources:

Relevant Information:

Abstract: DNA barcoding is a widely utilized molecular-based identification of species and taxonomic resolutions. Until recently, Rhamdia voulezi and Rhamdia branneri were considered species synonyms of Rhamdia quelen; however, morphological and cytogenetic analyses have suggested the validity of distinct species. Due to the absence of molecular taxonomy of R. voulezi and R. branneri, the objective of this study was to test its validity through traditional DNA barcoding and the GMYC (General Mixed Yule Coalescent) COI-based analyses in 19 specimens from the Iguaçu River Basin. In both methodologies, three MOTUs (Molecular Operational Taxonomic Units) were identified based on the estimated optimum threshold (OT = 0.77). The average inter-MOTU distance (NJ, K2P) between R. branneri and R. voulezi was 1.4%, and 0% intra-MOTU distance in both species. The two species identified as R. branneri and R. voulezi showed correspondence with taxonomic and morphological identifications. With regard to R. quelen, the average intra-MOTU distance was greater than OT (2.7%), indicating that this species can be formed by different MOTUs. We suggest that molecular and taxonomic studies should be employed concurrently in R. quelen, to prevent contamination of wild species by hybridizations (Ribolli, J. et al. 2017). Etymology: The specific name branneri: In honour of American geologist John Casper Branner (1950–1922), who “kindly assisted” Haseman at the beginning of his “long journey” to central South America. Remarks: This species can still be found on some online searches as Rhamdia quelen with R. branneri being a synonym off.

Common Name:

None

Synonyms:

None

Family:

Heptapteridae

Distribution:

South America: Iguaçu River basin (Brazil and Argentina). Type locality: Creek of the Rio Iguaçú near Serrinha, Paraná, Brazil.

Size:

30.0cm. (12ins)

Temp:

24-26°C (75-79°F)

p.H.

6.0-7.0.

IUCN Red List

Not Evaluated.

Reference:

Ribolli, J., B. M. Scaranto, O. A. Shibatta, R. A. Bombardelli and E. Zaniboni-Filho 2017. DNA barcoding confirms the occurrence of Rhamdia branneri and Rhamdia voulezi (Siluriformes: Heptapteridae) in the Iguaçu River Basin.
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.

Family: Heptapteridae Back to Ident-A-Cat Click on Thumbnails

Rhamdia branneri
Iguaçu River Basin, Paraná State, Brazil

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