| Autor: |
Wilson J. E. M. Costa, Caio R. M. Feltrin, José Leonardo O. Mattos, Axel M. Katz |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Evolutionary Systematics, Vol 8, Iss 2, Pp 199-218 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2535-0730 |
| DOI: |
10.3897/evolsyst.8.126393 |
| Popis: |
Mountainous regions typically host a great diversity of small-ranged species, often contributing for delineating world biodiversity hotspots. Species of trichomycterine catfishes have been recorded for several high-altitude areas of tropical South America, but field inventories in top mountains of southern Brazil are still rare. Here we report four new small-ranged species collected in streams of the Rio Iguaçu at Serra do Espigão (RISE) in altitudes between about 970 and 1020 m asl, one in the eastern portion of RISE and three in the western portion. A molecular phylogenetic analysis indicated that these species belong to the Cambeva beta-clade, which comprises all species endemic to the Rio Iguaçu drainage, but together not forming a monophyletic group. The analysis also indicated that species endemic to high altitudes are variably related to species from lower altitudes. The only eastern RISE species appears in a basal position of a well-supported clade (Cambeva beta1-clade), with the western RISE species appearing in a subclade of the Cambeva beta1-clade with species occurring in a vast area of southern Brazil. New species are diagnosed by combinations of morphological character states, including meristic, colouration, latero-sensory system, and osteological data. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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