Trichomycterus rubbioli

Bichuette and Rizzato 2012






Conservation Status

[NE] [VU D2:3.1:2011]

Trichomycterus rubbioli is endemic to Brazil and is known only from streams in two caves (Lapa dos Pesos and Gruna Clara Grotto) in the Serra do Ramalho, the middle portion of the São Francisco river basin, in the state of Bahia, with an EOO <100 km2 And AOO <10 km2. The Serra do Ramalho region has been extensively exploited for mining and agriculture and there are no Conservation Units that protect the caves systems located there. Field surveys revealed very low population densities (less than 20 individuals) and large seasonal fluctuations of the T. rubbioli population in the vailable stretches (180 m extension) of the studied stream, which may dry completely during certain periods. However, it was not possible to estimate the number of mature individuals, since the vandal sections of the creek seem to function as population sinks. In the face of the threat of the expansion of limestone mining in the caves where the species occurs, this set of conditions led Trichomycterus rubbioli to be categorized as Near Threatened Vulnerable (NTVU), approaching Critically Endnagered (CR) by VU criteria D2B1 (EOO < 100 km2), B2 (AOO <10 km2), and (iii) (extreme fluctuations in the AOO).” [Google Translate]

Museum Holdings

As above only.

Key References

Bichuette, M.E. and Rizzato, P.P. Journal Article 2012 A new species if cave catfish from Brazil, Trichomycterus rubbioli sp. n., from Serra do Ramalho karstic area, Sao Francisco River basin, Bahia State (Siluriformes: Trichmycteridae)
Colihueque, N., Corrales, O, and Yáñez, M. Journal Article 2017 Morphological analysis of Trichomycterus areolatus Valenciennes, 1846 from southern Chilean rivers using a truss-based system (Siluriformes, Trichomycteridae)
Flórez, J.S., Cadena, C.D., DoNascimiento, C. and Torres, M. Journal Article 2020 Repeated colonization of caves leads to phenotypic convergence in catfishes (Siluriformes: Trichomycterus) at a small geographical scale
Flórez, J.S., Cadena, C.D., Donascimiento, C. and Torres, M. Journal Article 2021 Repeated colonization of caves leads to phenotypic convergence in catfishes (Siluriformes: Trichomycterus) at a small geographical scale
Souza‑Silva, M., Cerqueira, R.F.V., Pellegrini, T.G. and Ferreira, R.L. Journal Article 2021 Habitat selection of cave‑restricted fauna in a new hotspot of subterranean biodiversity in Neotropics
Campos-Filho, I.S., Gallo, J.S., Gallão, J.E., Torres, D.F., Horta, L., Carpio-Díaz, Y.M., López-Orozco, C.M., Borja-Arrieta, R., Aguiar, J.O. and Bichuette, M.E. Journal Article 2022 Unique and fragile diversity emerges from Brazilian caves – two new amphibious species of Xangoniscus Campos-Filho, Araujo and Taiti, 2014 (Oniscidea, Styloniscidae) from Serra do Ramalho karst area, state of Bahia, Brazil
Ferreira, R.L., Berbert-Born, M. and Souza-Silva, M. Journal Article 2023 The Água Clara cave system in northeastern Brazil: The richest hotspot of subterranean biodiversity in South America
Vilardo, P.J., Katz, A.M. and Costa, W.J.E.M. Journal Article 2023 Phylogeny and historical biogeography of neotropical catfishes Trichomycterus (Siluriformes: Trichomycteridae) from eastern Brazil