Headwater stream fish fauna from the Upper Paranapanema River basin

Abstract

The Paraná River basin has about 600 fish species. In the Upper Paraná, 310 fish species were recorded, with 52 species were registered in the streams and headwaters of the Paranapanema River. The aim of this study was to characterize the stream fish communities in the Upper Paranapanema River basin. Samplings were conducted with electrofishing during the dry season in the year of 2014. The collection effort consisted of 30 streams stretches. As a result, 41 species of stream fish were recorded in the Upper Paranapanema River basin, distributed in 26 genera, 11 families and 7 orders. Thirty-nine percent of the species can be considered rare, 41% intermediate and 20% common. We captured approximately eight species by stream stretch and the estimated richness (Schao2) was 40 ± 6 species. Around 40% of the individuals had less than 50 mm in length.

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.…”

“…However, there is some apparent bias in knowledge of Iguaçu streams fish fauna, because greater attention had been given to inventories in or near to reservoirs areas (Garavello et al 1997. In addition, the studies of Iguaçu ichthyofauna have been smaller when compared to the upper Paraná basin (Langeani et al 2007, Cetra et al 2016, not encompassing large check lists of this region. Besides, there is yet the need of a compilation with an accurate systematic review to stream fish fauna of local regions, because some apparently species with restricted occurrence, showed broader distribution in more detailed studies (Frota et al 2016b).…”

Conservation status of Astyanax biotae (Characiformes: Characidae) in Mato Grosso do Sul, upper Paraná River basin, Brazil

“…Astyanax altiparanae (= A. lacustris), A. bockmanni, A. fasciatus, and A. paranae are the most widely distributed, in the basin, while A. schubarti, A. trierythropterus and two new species not yet described show more restricted distributions, like A. biotae. For the latter species, records of its occurrence at the time of the study were only from two small streams in the Ivinhema and Paranapanema River basins (CASTRO; VARI, 2004;CETRA et al, 2016;FROELICH et al, 2017), including the recent paper by Oliveira et al (2018).…”

“…In streams from the Paranapanema River basin, Cetra et al (2016) considered A. biotae a rare species, with low occurrence frequency, abundance and biomass. Its conservation status, at the national level, was considered Deicient Data (DD) (ICMBIO, 2016).…”

A new inventory for fishes of headwater streams from the rio das Cinzas and rio Itararé basins, rio Paranapanema system, Paraná, Brazil

“…However, these projects focused mostly on larger rivers and, until recently, low-order streams (especially in the Paraná State) still lacked samplings. This scenario changed in recent years as researchers started to focus ecological and biogeographical aspects of several sub-basins of the alto rio Paraná system, increasing our knowledge about the fish species resident in its streams (e.g., Castro et al 2003;Cetra et al 2012;Cionek et al 2012;Pagotto et al 2012;Costa et al 2013;Hoffmann et al 2015;Cetra et al 2016;Frota et al 2016a,b;Larentis et al 2016;Cavalli et al 2018;Delariva et al 2018;Claro-García et al 2018;.…”