Fish fauna from tributaries throughout the Tibagi River basin, upper Paraná basin, Brazil

Abstract

Fishes were collected at 36 sites in first order streams of Tibagi River basin, Paraná state, Brazil. A total of 2,669 individuals belonging to 47 species of 13 families and six orders were collected. The number of collected species represented 95.9% of the expected number of species for the studied area as estimated by Chao 1, and 93.4% by ACE, indicating an effective sampling. The highest richness was recorded in the tributaries at the lower region (Zone III) of the Tibagi River basin, with 33 species, including 16 species not found in the other regions of the basin. In the streams of the middle and upper regions (Zones II and I) each presented less richness, with 10 (two exclusive) and 25 (11 exclusive) species, respectively. This study shows a high geographic variation in the composition of fish fauna among zones, maybe related to historical and/or ecological influences.

Fish fauna in forested and rural streams from an ecoregion of high endemism, lower Iguaçu River basin, Brazil

“…This pattern of low species richness, associated with high endemism, has also characterized the ichthyofauna of other low-order streams in Iguaçu River basin (Ingenito et al 2004, Bifi et al 2006, Abilhoa et al 2008. These findings distinguish the fish fauna of headwaters of Iguaçu River basin from others similar streams of Paraná River system, with higher species richness (Araújo et al 2011, Marceniuk et al 2011, Hoffmann et al 2015, Vidotto-Magnoni et al 2015, Cetra et al 2016, Frota et al 2016a). Lower fish richness was also verified by Larentis et al (2016) to those that flows downstream it.…”

“…Characidae with a great number of smaller sized and generalists foraging species (sensu Castro 1999, Abelha et al 2001, normally have co-dominated with armored dwellers Loricariidae (Castro et al 2003, Araújo et al 2011, Hoffmann et al 2015, Vidotto-Magnoni et al 2015, or with catfishes Heptapteridae (Pereira et al 2014), and eventually with Cichlidae (Gubiani et al 2010), when non-native tilapias are present. However, similar to found herein, Trichomycteridae have been representative in low Iguaçu streams (Frota et al 2016b, Larentis et al 2016, probably by morphological adaptations of its species to dwelling in varied streams (Casatti 2003).…”

Ichthyofauna of the Ribeirão Frutal and tributaries, upper Rio Paraná basin, Minas Gerais, Southeastern Brazil

“…Langeani et al (2007) showed that Characidae and Loricariidae, in general, are the two most species-rich families of the upper Rio Paraná basin. In addition, several ichthyofaunal surveys (e.g., , Smith et al 2007, Oliveira et al 2009, Fagundes et al 2015, Hoffmann et al 2015, Cardoso et al 2016, Frota et al 2016 show this pattern in tributaries of the basin. However, in our work Cichlidae was the second most represented family (Fig.…”

Diversity and distribution of ichthyofauna in streams of the middle and lower Tibagi river basin, Paraná, Brazil

“…On the other hand, studies aimed at inventorying the fish fauna of small tributaries have intensified in recent years (Shibatta and Cheida 2003, Oliveira LIST OF SPECIES and Bennemann 2005, Vieira and Shibatta 2007, Hoffmann et al 2015.…”