“Conservation State of Siluriformes fish from the Ramsar Site “Jaaukanigás” (Middle Paraná River), Argentina”.

ELLY CORDIVIOLA; MIRTA CAMPANA; DANILO DEMONTE; DANIEL DEL BARCO; ALICIA TRÓGOLO

Instituto Nacional de Limnología- CONICET- UNL

Jornada; X Jornadas de Ciencias Naturales del Litoral. II Reunión Argentina de Ciencias Naturales.; 2009

Instituto Nacional de Limnología, (INALI), Facultad de Humanidades y Ciencias (FHUC) y Asociación de Ciencias Naturales del Litoral (ACNL).

The Siluriformes conservation state was quantified by means of the SUMIN index, composed by the sum of 12 outstanding variables for the species survival and/or conservation. An arranged list of the thirty –three Siluriformes species from the Ramsar Site was obtained according to a gradient of conservation necessity. The species determined as vulnerable of maximum priority: Pseudoplatystoma corruscans, P. f. fasciatum, Luciopimelodus pati, and Hemisorubim platyrhinchos; species vulnerable of special attention: Oxydoras kneri, Ageneiosus valenciennesi, Sorubim lima, Platydoras costatus, Pterodoras granulosus, Sturisoma robustum, Trachydoras paraguayensis y Ageneiosus brevifilis. The remaining species, were qualified as not threatened: Corydoras paleatus,, Pimelodus ornatus, Loricariichthys anus, Pimelodus albicans, P. maculatus, Hypostomus commersoni Loricariichthys platymetopon, Pimelodus brevis, Paraloricaria vetula, Parastegophilus maculatus, Trachelyopterus striatulus, T. cf. galeatus, Bergiaria westermanni, Pimelodella laticeps, Liposarcus anisitsi, Otocinclus vittatus, Loricaria simillima, Parapimelodus valenciennis, Pimelodella gracilis.  Auchenipterus osteomystax, and Hoplosternum littorale. Keywords: conservation, ichthyofauna, South America, SUMIN