Journal Article
Sympatric sister species with divergent morphological features of psammophilic catfishes of the south-eastern Brazilian genus Microcambeva (Siluriformes:Trichomycteridae)
Costa, W.J.E.M., Vilardo, P. and Katz, A.M.
Record Number:
4525
Year:
2020
Journal:
Zoologischer Anzeiger
Pages:
12-17
Volume:
285
Abstract:
An undescribed species of Microcambeva, a genus of small psammophilic catfishes from the
Atlantic Forest of south-eastern Brazil, was found together the congener M. ribeirae
inhabiting the same sand stretch of a stream, in the Rio Ribeira do Iguape basin. The new
species and its sympatric congener exhibit highly divergent morphological features, but a
multigene phylogeny support them as sister taxa. The new species, M. filamentosa sp. nov., is
readily distinguished from all other congeners by the presence of long barbels, long
filamentous first pectoral-fin ray and a hypertrophied predorsal adipose fold. Microcambeva
filamentosa and M. ribeirae share two unique apomorphic features: a single supraorbital pore
s6 situated on the centre of the dorsal surface of the head and a deep concavity between the
dorsal process of the opercle and the opercular odontode patch, conditions that are
independently acquired in other psammophilic trichomycterids. A comparative context,
involving other trichomycterid lineages exhibiting similar morphological adaptations, highly
suggests that morphological differences between M. filamentosa and M. ribeirae are related to
different strategies to exploit their habitat. In M. ribeirae, the short and thickened first
pectoral-fin ray is interpreted as an adaptation to the fish posing propped on the substratum
while visually detecting potential preys, what is reinforced by the unique possession in this
taxon of a relatively large eye positioned on the top of the head. On the other hand, the
relatively small eye and long barbels of M. filamentosa highly suggest the use of a
predominantly chemosensory and tactile detection of food, indicating possible nocturnal
habits.
Times Cited:
4
Relevent Species:
Related Records:
Costa, W.J.E.M. and Bockmann, F.A. (1994)
A new genus and species of Sarcoglanidinae (Siluriformes: Trichomycteridae) from southeastern Brazil, with a re-examination of subfamilial phylogeny
Costa, W.J.E.M., Lima S.M.Q. and Bizerril, C.R.S.F. (2004)Microcambeva ribeirae sp. n. (Teleostei: Siluriformes: Trichomycteridae): a new sarcoglanidine catfish from the Rio Ribeira do Iguape basin, southeastern Brazil
Costa, W.J.E.M., Lima S.M.Q. and Bizerril, C.R.S.F. (2004)Microcambeva ribeirae sp. n. (Teleostei: Siluriformes: Trichomycteridae): a new sarcoglanidine catfish from the Rio Ribeira do Iguape basin, southeastern Brazil
Costa, W.J.E.M., Lima S.M.Q. and Bizerril, C.R.S.F. (2004)Microcambeva ribeirae sp. n. (Teleostei: Siluriformes: Trichomycteridae): a new sarcoglanidine catfish from the Rio Ribeira do Iguape basin, southeastern Brazil
Bockmann, F.A. and Lima, F.C.T. (2008)Microcambeva barbata
Mattos, J.L.O. and Lima, S.M.Q. (2010)Microcambeva draco, a new species from northeastern Brazil (Siluriformes: Trichomycteridae)
Adriaens, D., Baskin, J.N. and Coppens, H. (2010)Evolutionary morphology of trichomycterid catfishes: about hanging on and digging in
Adriaens, D., Baskin, J.N. and Coppens, H. (2010)Evolutionary morphology of trichomycterid catfishes: about hanging on and digging in
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Ochoa, L.E., Roxo, F.F., DoNascimiento, C., Sabaj, M.H., Datovo, A., Alfaro, M. and Oliveira, C. (2017)Multilocus analysis of the catfish family Trichomycteridae (Teleostei: Ostariophysi: Siluriformes) supporting a monophyletic Trichomycterinae
Ochoa, L.E., Roxo, F.F., DoNascimiento, C., Sabaj, M.H., Datovo, A., Alfaro, M. and Oliveira, C. (2017)Multilocus analysis of the catfish family Trichomycteridae (Teleostei: Ostariophysi: Siluriformes) supporting a monophyletic Trichomycterinae
MMA Ministério do Meio Ambiente (2018)Livro vermelho da fauna brasileira ameaçada de extinção. Vol. VI
MMA Ministério do Meio Ambiente (2018)Livro vermelho da fauna brasileira ameaçada de extinção. Vol. VI
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Costa, W.J.E.M., Katz, A.M., Mattos, J.L.O. and Rangel-Pereira, F.S. (2019)Two new species of miniature psammophilic sarcoglanidine catfishes of the genus Microcambeva from the Atlantic Forest of eastern Brazil (Siluriformes: Trichomycteridae)
Costa, W.J.E.M., Katz, A.M., Mattos, J.L.O. and Rangel-Pereira, F.S. (2019)Two new species of miniature psammophilic sarcoglanidine catfishes of the genus Microcambeva from the Atlantic Forest of eastern Brazil (Siluriformes: Trichomycteridae)
Costa, W.J.E.M., Katz, A.M., Mattos, J.L.O. and Rangel-Pereira, F.S. (2019)Two new species of miniature psammophilic sarcoglanidine catfishes of the genus Microcambeva from the Atlantic Forest of eastern Brazil (Siluriformes: Trichomycteridae)
Datovo, A, Canto, A.L.C., Di Dario, F., Zuanon, J.A.S., Ferrer dos Santos, J., Villa-Verde, L., Rapp Py-Daniel, L., Mehanna, M.N., Rocha, M.S., de Pinna, M.C.C., Ota, R.P. and Wosiacki, W.B. (2019)Microcambeva draco Mattos & Lima, 2010
Sarmento-Soares, L.M., Pessali, T.C., Reis, V.J.C., Medeiros, L.S., Lima, S.M.Q., Silva, J.P., Martins- Pinheiro, R.F. and de Pinna, M.C.C. (2019)Distribution, morphological notes and conservation status of the psammophilous Microcambeva catfishes (Siluriformes: Trichomycteridae).
Sarmento-Soares, L.M., Pessali, T.C., Reis, V.J.C., Medeiros, L.S., Lima, S.M.Q., Silva, J.P., Martins- Pinheiro, R.F. and de Pinna, M.C.C. (2019)Distribution, morphological notes and conservation status of the psammophilous Microcambeva catfishes (Siluriformes: Trichomycteridae).
Datovo, A, Canto, A.L.C., Di Dario, F., Zuanon, J.A.S., Ferrer dos Santos, J., Villa-Verde, L., Rapp Py-Daniel, L., Mehanna, M.N., Rocha, M.S., de Pinna, M.C.C., Ota, R.P. and Wosiacki, W.B. (2019)Microcambeva draco Mattos & Lima, 2010
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Ochoa, L.E., Datovo, A., DoNascimiento, C., Roxo, F.F., Sabaj, M.H., Chang, J., Melo, B.F., Silva, G.S.C., Foresti, F., Alfaro, M. and Oliveira, C. (2020)Phylogenomic analysis of trichomycterid catfishes (Teleostei: Siluriformes) inferred from ultraconserved elements
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Costa, W.J.E.M., Vilardo, P. and Katz, A.M. (2020)Sympatric sister species with divergent morphological features of psammophilic catfishes of the south-eastern Brazilian genus Microcambeva (Siluriformes:Trichomycteridae)
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Medeiros, L.S de., Sarmento-Soares, L.M. and Lima, S.M.Q. (2021)A new psammophilous catfish of the genus Microcambeva (Teleostei: Trichomycteridae)
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Costa, W.J.E.M. and Katz, A.M. (2021)Comparative morphology, phylogeny, classification and evolution of interstitial habits in Microcambevine catfishes (Siluriformes: Trichomycteridae)
Costa, W.J.E.M. and Katz, A.M. (2021)Comparative morphology, phylogeny, classification and evolution of interstitial habits in Microcambevine catfishes (Siluriformes: Trichomycteridae)
Costa, W.J.E.M. and Katz, A.M. (2021)Comparative morphology, phylogeny, classification and evolution of interstitial habits in Microcambevine catfishes (Siluriformes: Trichomycteridae)
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