scholarly journals Comparative cytogenetics between three Characidae fish species from the São Francisco River basin

Caryologia ◽  
2007 ◽  
Vol 60 (1-2) ◽  
pp. 64-68 ◽  
Author(s):  
Peres Wellington Adriano Moreira ◽  
Luiz Antônio Carlos Bertollo ◽  
Orlando Moreira-Filho
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Comparative Cytogenetics ◽  
Sao Francisco River ◽  
São Francisco River

scholarly journals Continental ichthyofauna from the Paraíba do Norte River basin pre-transposition of the São Francisco River, Northeastern Brazil

2018 ◽  
Vol 18 (4) ◽  
Author(s):  
Telton Pedro Anselmo Ramos ◽  
Jéssica Alcoforado de Sena Lima ◽  
Silvia Yasmin Lustosa Costa ◽  
Márcio Joaquim da Silva ◽  
Raizze da Costa Avellar ◽  
...  
Keyword(s):  
Freshwater Fish ◽  
River Basin ◽  
Fish Species ◽  
Scientific Data ◽  
Northeastern Brazil ◽  
Fish Diversity ◽  
Freshwater Fish Species ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Number Of Publications

Abstract: Freshwater ichthyofauna from Brazil Northeast region was considered as being poorly known until recent years, with a considerable number of publications becoming available in the last decade. The present study provides an inventory of freshwater fish species from the Paraíba do Norte River basin located in Paraíba State, Brazil. This inventory is intended to contribute to the of knowledge to the regional fish diversity, pre-transposition of the São Francisco River. Collecting data was obtained from ichthyological databases of both national and foreign institutions. A total of 47 freshwater fish species are registered within the Paraíba do Norte River basin, represented by 38 genera, 20 families and six orders. Characiformes, comprising 47% (22 species), Cichliformes, and Siluriformes are among the most representative orders, 19% (9 species) each, of total recorded species. Seven species of Cichliformes are reported as introduced species in this basin. Cyprinodontiformes and Gobiiformes also registered in this region and correspond to 5% (two species) and Gymnotiformes, Perciformes and Synbranchiformes, 2% (one species each) of total recorded species. Paraíba do Norte River basin stands out in the current national scenario as it comprises the first region from the Mid-Northeastern Caatinga freshwater ecoregion to receive water from the transposition of the São Francisco River. The current inventory is important as it provides scientific data related to the ichthyofauna of Paraíba do Norte River basin prior to the commencement of the river transposition process. An identification key is also given for the freshwater fish species of the region.

scholarly journals Evaluation of the effects of pressure gradients on four Brazilian freshwater fish species

2009 ◽  
Vol 52 (1) ◽  
pp. 111-118 ◽  
Author(s):  
Paulo dos Santos Pompeu ◽  
Luiz Felipe Mascarenhas Horta ◽  
Carlos Barreira Martinez
Keyword(s):  
Freshwater Fish ◽  
River Basin ◽  
Fish Species ◽  
Gradual Increase ◽  
Mortality Rates ◽  
Pressure Gradients ◽  
Freshwater Fish Species ◽  
Sao Francisco River ◽  
São Francisco River

This work aimed to experimentally evaluate the behavior of Brazilian freshwater fish species when submitted to a gradual increase in pressure, as well as sudden decompression's effects simulating the passage through a hydroelectric turbine. Four species from the São Francisco river basin were tested: Astyanax bimaculatus, Hypostomus sp., Leporinus reinhardti and Prochilodus costatus. For all of them mortality rates due to decompression were extremely low. However, the symptoms related to decompression, such as bulged eyes and hemorrhage, were not observed only in Hypostomus sp., and were more frequent the larger the pressure values were, considering the values from which decompression was performed. All these symptoms decreased significantly after 24 h of observation. With the increase in pressure inside the apparatus, the four tested species moved towards the upper levels. This behavior could make possoble the implementation of bypass downstream fish passages in dams constructed in Brazil.

Comparative analysis of gonadal morphology in six fish species of the Incertae Sedis genera in Characidae of occurrence in the São Francisco River Basin, Brazil

2010 ◽  
Vol 93 (1) ◽  
pp. 48-56 ◽  
Author(s):  
Yuri Simões Martins ◽  
Fábio Pereira Arantes ◽  
Yoshimi Sato ◽  
José Enemir dos Santos ◽  
Elizete Rizzo ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
River Basin ◽  
Fish Species ◽  
Sao Francisco River ◽  
Incertae Sedis ◽  
São Francisco River

scholarly journals Cytogenetic analyses of two endemic fish species from the São Francisco River basin: Conorhynchus conirostris and Lophiosilurus alexandri (Siluriformes)

2008 ◽  
Vol 31 (1 suppl) ◽  
pp. 215-221 ◽  
Author(s):  
Marilza Barbosa de Almeida Marques ◽  
Orlando Moreira-Filho ◽  
Caroline Garcia ◽  
Vladimir Pavan Margarido
Keyword(s):  
River Basin ◽  
Fish Species ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Cytogenetic Analyses ◽  
Endemic Fish

scholarly journals Induced reproduction and reproductive characteristics of Rhinelepis aspera Agassiz, 1829 (osteichthyes: Siluriformes, Loricariidae)

1998 ◽  
Vol 41 (3) ◽  
pp. 309-314 ◽  
Author(s):  
Yoshimi Sato ◽  
Nelsy Fenerich-Verani ◽  
José Roberto Verani ◽  
Hugo Pereira Godinho ◽  
Edson Vieira Sampaio
Keyword(s):  
Body Weight ◽  
Water Temperature ◽  
River Basin ◽  
Fertilization Rate ◽  
Pituitary Extract ◽  
Reproductive Characteristics ◽  
Sao Francisco River ◽  
Absolute Fecundity ◽  
São Francisco River

Rhinelepis aspera is the largest Loricariidae species found in the São Francisco river basin where it is now rarely caught. Brooders kept in tanks were hypophysed with crude carp pituitary extract (CCPE). Approximately 82% of the females responded positive to the treatment. The egg was opaque, demersal, round, yellow and adhesive. Egg stripping was done at 212 hour-degrees (= 8.2 h) after application of the second dose of CCPE (water temperature = 25-26 ºC). Hatching of the larvae occurred at 1022 hour-degrees (= 42.2 h), after fertilization of the eggs (water temperature =24-25 ºC). Fertilization rate of the eggs was 72%. Absolute fecundity (AF), initial fertility (IF) and final fertility (FF) in relation to the females' body weight are expressed, respectively, by the equations: AF = - 33993 + 122308 Wt (r² = 0.88), IF = - 14823 + 58619 Wt (r² = 0.71) and FF = - 6553 + 29741 (r² = 0.61)

scholarly journals Digenea of Hoplias intermedius and Hoplias malabaricus (Actinopterygii, Erythrinidae) from upper São Francisco River, Brazil

2015 ◽  
Vol 24 (2) ◽  
pp. 129-135 ◽  
Author(s):  
Danielle Priscilla Correia Costa ◽  
Cassandra Moraes Monteiro ◽  
Marilia Carvalho Brasil-Sato
Keyword(s):  
River Basin ◽  
Feeding Habits ◽  
Minas Gerais ◽  
New Host ◽  
Hoplias Malabaricus ◽  
Parasitic Fauna ◽  
Sao Francisco River ◽  
São Francisco River ◽  
New Location

A total of 103 specimens of Hoplias intermedius (Günther, 1864) and 86 specimens of H. malabaricus (Bloch, 1794) from the upper São Francisco River, State of Minas Gerais were collected between April 2011 and August 2013, and their parasitic fauna were investigated. Four species of Digenea were found: metacercariae of Austrodiplostomum sp., and Ithyoclinostomum sp.; and adult specimens of Phyllodistomum spatula Odhner, 1902, and Pseudosellacotyla lutzi (Freitas, 1941) Yamaguti, 1954. The prevalence of the metacercariae was higher than that of the adult digeneans of erythrinids from the upper São Francisco River as a result of piscivorous feeding habits of these adult erythrinids. The presence of metacercariae and adult digeneans indicate that they act as intermediate and definitive hosts, respectively, in their biological cycles. Hoplias intermedius is a new host for the four species of Digenea, and the São Francisco River basin is a new location for the known geographical distributions of P. spatula and P. lutzi.

scholarly journals Evaluation of Eta Model Rainfall Forecasts at São Francisco River Basin in Minas Gerais, Brazil

2016 ◽  
Vol 38 (2) ◽  
pp. 15
Author(s):  
R. M. G. VIEIRA ◽  
C. P. DERECZYNSKI ◽  
S. C. CHOU ◽  
J. L. GOMES ◽  
A. C. PAIVA NETO
Keyword(s):  
River Basin ◽  
Minas Gerais ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Eta Model

Integrated spatiotemporal trends using TRMM 3B42 data for the Upper São Francisco River basin, Brazil

2018 ◽  
Vol 190 (3) ◽  
Author(s):  
Celso Augusto Guimarães Santos ◽  
Reginaldo Moura Brasil Neto ◽  
Richarde Marques da Silva ◽  
Jacqueline Sobral de Araújo Passos
Keyword(s):  
River Basin ◽  
Sao Francisco River ◽  
Spatiotemporal Trends ◽  
São Francisco River ◽  
Trmm 3B42

scholarly journals A poorly known case of watershed transposition between the São Francisco and upper Paraná river basins

2005 ◽  
Vol 3 (3) ◽  
pp. 449-452 ◽  
Author(s):  
Orlando Moreira Filho ◽  
Paulo Andreas Buckup
Keyword(s):  
River Basin ◽  
Fish Fauna ◽  
Rio Grande ◽  
River Basins ◽  
Hydroelectric Power ◽  
Sao Francisco River ◽  
Parana River ◽  
São Francisco River ◽  
Upper Paraná River ◽  
Parana Basin

During construction of the Furnas hydroelectric power dam in the upper rio Paraná basin in the early 1960s, the rio Piumhi drainage outflow was diverted into the headwaters of the São Francisco river basin. The rio Piumhi was a right bank tributary of the rio Grande, which unites with the rio Paranaíba to form the rio Paraná. The transposition allowed the entire fish fauna of the rio Piumhi and associated swamps, lakes, and tributaries to intermingle with the fish fauna of the São Francisco basin via the ribeirão Sujo, a right bank tributary of the São Francisco. The transposition of the watershed may have had a major impact on the current composition of the fish fauna of the upper rio São Francisco watershed.

scholarly journals Effects of extended absence of flooding on the fish assemblages of three floodplain lagoons in the middle São Francisco River, Brazil

2006 ◽  
Vol 4 (4) ◽  
pp. 427-433 ◽  
Author(s):  
Paulo dos Santos Pompeu ◽  
Hugo Pereira Godinho
Keyword(s):  
Fish Species ◽  
Fish Assemblages ◽  
Local Extinction ◽  
Management Tool ◽  
Southeastern Brazil ◽  
Water Volume ◽  
Sao Francisco River ◽  
São Francisco River ◽  
Large Water ◽  
To Receive

In the Neotropics, a large proportion of fish communities of large rivers use floodplain as habitats for feeding, reproduction, and refuge. An evaluation was made of the effects of extended dry periods on the species richness, abundance and local extinction of fish species in three marginal lagoons in the middle São Francisco River, southeastern Brazil. The studied lagoons fail to receive river floods during the study period (1994-1996). A gradual reduction in richness and abundance was observed in all lagoons. Migratory fish species had the highest probability to become extinct in the two lagoons that remained with large water volume. Species tolerant to low levels of dissolved oxygen had the lowest probability of local extinction in the lagoon showing an abrupt reduction in water volume. Similar changes to those observed in the current study are likely to occur in the floodplains if dams would be constructed in this segment of the river. Adequate water releases from Três Marias reservoir, located upstream, should be considered as a management tool for producing episodic flooding on the marginal lagoons of the region.

Sign in / Sign up

Export Citation Format

Share Document