Effectiveness of a fish ladder for two Neotropical migratory species in the Paraná River

2018 ◽  
Vol 69 (12) ◽  
pp. 1848 ◽  
Author(s):  
Carola Gutfreund ◽  
Sergio Makrakis ◽  
Theodore Castro-Santos ◽  
Leandro Fernandes Celestino ◽  
João Henrique Pinheiro Dias ◽  
...  
Keyword(s):  
Release Site ◽  
Paraná River ◽  
Migratory Fish ◽  
Effective Solution ◽  
Migratory Species ◽  
Parana River ◽  
Fish Ladder ◽  
Transit Times ◽  
Left And Right ◽  
Upper Paraná River

We evaluated the effectiveness of the fish ladder at Porto Primavera Dam in the severely regulated Upper Paraná River, for two Neotropical migratory fish species. Overall, 564 fish (448Megaleporinus obtusidens and 116M. piavussu) were PIT-tagged, released in upstream and downstream areas (on the left and right banks), and monitored continuously for 4 years. The fish performed two-way movements through the fish ladder, ascending from the tailrace and descending from the forebay. We registered entry into the fishway of 46M. obtusidens (10.3%) individuals and only three M. piavussu (2.6%) individuals; therefore, all analyses were focussed on M. obstusidens. Entry proportion ranged from 0 to 48.1%, depending on the release site, and was greatest for fish released downstream near the fishway entrance. Entry times ranged from 3.0 to 384.0 days, and median times were 32.9 and 25.8 days for downstream and upstream respectively. Of fish that entered the fishway, passage percentages were 80% for fish released downstream and 100% for fish released upstream, and median transit times were 0.7 and 0.9h respectively. Results suggest that if guidance and entry conditions can be improved, this fishway design holds promise as an effective solution for providing passage in both directions.A

scholarly journals Morphological differentiation among migratory fish species from the Paraná River basin

2012 ◽  
Vol 12 (4) ◽  
pp. 41-49 ◽  
Author(s):  
Lucileine de Assumpção ◽  
Maristela Cavicchioli Makrakis ◽  
Sergio Makrakis ◽  
Pitágoras Augusto Piana ◽  
Patrícia Sarai da Silva ◽  
...  
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Fish Passage ◽  
Paraná River ◽  
Migratory Fish ◽  
Migratory Species ◽  
Caudal Peduncle ◽  
Parana River ◽  
Maximum Body ◽  
Paraná River Basin

This study characterized the morphological differences among migratory fish species from the Paraná River Basin. A total of 177 adult fish of Leporinus elongatus, Leporinus macrocephalus, Prochilodus lineatus, Salminus brasiliensis, Pimelodus maculatus, Pinirampus pirinampu, Pseudoplatystoma corruscans, Pterodoras granulosus, and Rhaphiodon vulpinus were sampled in the Canal da Piracema, a fish passage system at Itaipu Dam, Paraná River. The migratory species were analyzed through 22 morphometric measurements and fineness ratio to identify morphological patterns related to swimming performance. Four species groups were indicated by the Cluster analysis: I) R. vulpinus; II) P. corruscans; III) L. macrocephalus, L. elongatus, P. lineatus, P. maculatus, and S. brasiliensis - measurements of head height and anal fin length formed this group; and IV) P. granulosus and P. pirinampu - measurements of maximum body width and caudal peduncle width contributed to form this group. The morphometric variables that most contributed to the distinction were head length and mouth width for groups I and II. The species R. vulpinus and P. granulosus differed from other species, showing fineness ratios of 9.4 and 3.7, respectively. Leporinus elongatus, L. macrocephalus, P. lineatus, P. maculatus, and S. brasiliensis showed significant differences from other species, with ratios ranging from 4.57 to 5.19, indicating that these species may be better swimmers. Long-distance migratory species using the Piracema Canal to ascend upstream areas differed morphologically, morphological characteristics such as a narrow caudal peduncle and maximum body length, besides to the values of the fineness ratio, were essential to differentiate the migratory species.

scholarly journals Hydropower Development and Fishways: A Need for Connectivity in Rivers of the Upper Paraná Basin

2019 ◽  
Vol 11 (13) ◽  
pp. 3749 ◽  
Author(s):  
Sergio Makrakis ◽  
Ana P. S. Bertão ◽  
Jhony F. M. Silva ◽  
Maristela C. Makrakis ◽  
Fco. Javier Sanz-Ronda ◽  
...  
Keyword(s):  
Scientific Literature ◽  
Structural Connectivity ◽  
Paraná River ◽  
South American ◽  
Hydroelectric Dams ◽  
Migratory Fish ◽  
Parana River ◽  
Hydropower Plants ◽  
Hydropower Dams ◽  
Upper Paraná River

South American rivers have become intensely affected by the construction of hydroelectric dams that block the river’s connectivity for migratory fish species. In order to mitigate the problems caused by dams and to reestablish connections between habitats, fishways are implemented. Fishways are structures that aid fish in overcoming obstacles and help preserve migratory, reproductive, and feeding routes. This study performed an inventory of all hydropower plants—present and future—in the Upper Paraná River, with the objective of identifying fishways unknown to scientific literature, as well as the task of mapping them. By doing so, the current situation of structural connectivity via fishways in the Upper Paraná River Basin was described. Overall, 389 dams along 209 rivers were identified; of these, only 9% (35 dams) have fishways. In addition, an alarming explosion of future medium-sized hydropower plants was observed, with an expectation of an almost 500% increase in relation to those existing. This data reveals a trend of reduction of free-flowing river stretches, which are crucial habitats for Neotropical potamodromous species, and point to a deficiency in the structural connectivity of existing hydropower dams. Furthermore, if the implementations of these expected constructions are associated with limited connectivity as a result of the absence of fishways, the management of fisheries and their resources in the Upper Paraná River may become unsustainable.

Importance of Reservoir Tributaries to Spawning of Migratory Fish in the Upper Paraná River

2014 ◽  
Vol 31 (3) ◽  
pp. 313-322 ◽  
Author(s):  
P. S. da Silva ◽  
M. C. Makrakis ◽  
L. E. Miranda ◽  
S. Makrakis ◽  
L. Assumpção ◽  
...  
Keyword(s):  
Paraná River ◽  
Migratory Fish ◽  
Parana River ◽  
Upper Paraná River

scholarly journals Fishes (Osteichthyes: Actinopterygii) from the Pirapó River drainage, upper Paraná River basin, Paraná state, Brazil

Check List ◽  
2012 ◽  
Vol 8 (3) ◽  
pp. 463 ◽  
Author(s):  
João Paulo Alves Pagotto ◽  
Samuel Veríssimo ◽  
Erivelto Goulart ◽  
Fábio Teruo Mise
Keyword(s):  
River Basin ◽  
Paraná River ◽  
Migratory Species ◽  
River Drainage ◽  
Parana River ◽  
Voucher Specimens ◽  
Commercially Important ◽  
Upper Paraná River ◽  
Upper Paraná River Basin ◽  
Paraná River Basin

In this study we conducted an ichthyofaunistic survey in the Pirapó River drainage, upper Paraná River basin, based on voucher specimens deposited in the Coleção Ictiológica do Nupélia/UEM. We reported a total of six orders, 23 families, and 76 species, in which four of them were classified as allochthonous and two as exotics. Twenty-eight percent of these species were recorded only for tributaries, whereas the commercially important migratory species, Dourado - Salminus brasiliensis (Cuvier, 1816), was recorded in the main channel, indicating that the Pirapó River, still free from impoundments, may be one of the last rivers in the upper Paraná River basin that can be used to protect migratory fish species.

scholarly journals Evaluation of the Upper Paraná River discharge controlled by reservoirs

2009 ◽  
Vol 69 (2 suppl) ◽  
pp. 707-716 ◽  
Author(s):  
EE. Souza Filho
Keyword(s):  
Paraná River ◽  
River Level ◽  
Parana River ◽  
River Damming ◽  
Discharge Rates ◽  
Historical Series ◽  
Discharge Regime ◽  
Upper Paraná River ◽  
The Relationship ◽  
Different Levels

The building of large dams in the Upper Paraná River basin altered the discharge regime at the Porto São José River section. The discharge regime has been altered since 1972, but the changes intensified after the Porto Primavera damming, in late 1998. Considering that discharge control affects the relationship between channel and floodplain, this work aimed to evaluate the intensity of the discharge control that resulted from the operation of the Porto Primavera Dam. To achieve this objective, statistical analyses were carried out based on the Porto São José Fluviometric Station historical series of river level readings and discharge, between 1964 and 2007. Results showed that the average discharge increased from 1964 to 1981 and diminished after river damming. The increase of average discharge rates was followed by an increase of the duration of higher discharges at different levels of geomorphologic and limnological importance, and the reduction of average discharge during the last observed period was followed by a disproportionate decrease in the duration of the abovementioned discharges. Moreover, it is clear that the relationship between fluviometric level and fluvial discharge changed, which implies that a certain river level reading represents a higher discharge than necessary before river damming.

scholarly journals Genetic variability of brycon orbignyanus (valenciennes, 1850) (characiformes: characidae) in cultivated and natural populations of the upper paraná river, and implications for the conservation of the species

2011 ◽  
Vol 54 (4) ◽  
pp. 839-848 ◽  
Author(s):  
Renata de Souza Panarari-Antunes ◽  
Alberto José Prioli ◽  
Sônia Maria Alves Pinto Prioli ◽  
Alexsandro Sobreira Galdino ◽  
Horácio Ferreira Julio Junior ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Natural Populations ◽  
Paraná River ◽  
Parana River ◽  
Upper Paraná River
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