Barbus tyberinus Bonaparte, 1839, Telestes muticellus (Bonaparte, 1837), Squalius lucumonis (Bianco, 1983) e Padogobius nigricans (Canestrini, 1867) nel versante tirrenico del Parco Nazionale delle Foreste Casentinesei, Monte Falterona e Campigna (Emilia Romagna - Toscana)

In 2016 and 2017, a survey was carried out in the streams of the Tyrrhenian side of the Foreste Casentinesi, Monte Falterona and Campigna National Park, in the upper Arno River basin, with the aim of deepening knowledge on the distribution, consistency and conservation status of the population of Barbus tyberinus Bonaparte, 1839, Telestes muticellus (Bonaparte, 1837), Squalius lucumonis (White, 1983) and Padogobius nigricans (Canestrini, 1867). These four species, endemic of italian fauna, are in continuing decline. 43 stations were sampled in 25 streams, in ten of which, corresponding to seven streams (Staggia, Oia, Fiumicello, Archiano, Corsalone creeks and Camaldoli and Corezzo brooks), the presence of the species under investigation was ascertained. T. muticellus was the most widespread, present in all seven streams with the largest and best structured populations; B. tyberinus sampled in the Corsalone creek and in the Corezzo brook had numerous and well structured populations only in the first stream; P. nigricans which has never been found before in the streams of the Park, this species is present with populations quite numerous only in the sections at lower altitudes of the Archiano creek and Camaldoli brook; S. lucumonis, like P. nigricans, is new to the Park, the species has resulted sporadic in the Corsalone creek. The greatest threat for the conservation status of these species is the predation/competition carried out by Salmo trutta, Linnaeus, 1758, which was introduced for support the purpose of recreational fishing. © 2021 Societa Toscana di Scienze Naturali. All rights reserved.