Gymnocharacinus bergii, photo: Heiko Bleher
The scaleless characid Gymnocharacinus bergii Steindachner, 1903 is a stenothermic teleost fish restricted to the headwaters of the Valcheta stream at the Somuncurá plateau in the Argentinean province
of Río Negro. This species is highly threatened by salmonids (Oncorhynchus mykiss and Salvelinus fontinalis) introduced into its natural environment in 1941 and human activities such as channel drainages and cattle breeding. 
Due to its unique position within the Characiformes, its endemic occurence and restricted distribution far south in a thermal stream of northern temperate Patagonia this species was studied or at least mentioned by numerous native and foreign investigators during the years. Unfortunately, publications about this remarkable teleost are widely dispersed in journals and in languages often little known to researchers. Therefore, Koerber & Ortubay (2004) presented a list of the most informative articles on this species. To facilitate keeping up with recent research on Gymnocharacinus bergii all papers that followed the list provided by Koerber & Ortubay are included here. Koerber, S. & S. Ortubay (2004):
Literature published on the naked tetra Gymnocharacinus bergii (Characiformes: Characidae: Gymnocharacinae) from Patagonia, Argentina.
Zeitschrift für Fischkunde 7 (1): 5-8
[Verlag Natur und Wissenschaft, Solingen, Germany]
Cordi, V., S. Ortubay & M. Lozada (2005):
Visual cues during the alarm reaction of Gymnocharacinus bergi (Pisces, Characidae).
Journal of Applied Ichthyology 21 (6): 487–491
[Blackwell Verlag, Berlin, Germany]
Miquelarena, A., S. Ortubay & V. Cussac (2005):
Morphology, osteology and reductions in the ontogeny of the scaleless characid Gymnocharacinus bergi.
Journal of Applied Ichthyology 21 (6): 511–519
[Blackwell Verlag, Berlin, Germany] Perotti, M.G., M.C. Dieguez & F.G. Jara (2005):
Estado del conocimiento de humedales del norte patagónico (Argentina): aspectos relevantes e importancia para la conservación de la biodiversidad regional.
Revista Chilena de Historia Natural 78 (4): 723-737
[Sociedad de Biología de Chile, Santiago, Chile] |
