Results 51 to 60 of about 1,346 (161)

Genetic diversity of migratory fish populations of the Rio Grande Reservoir (São Paulo, Brazil)

Semina: Ciências Agrárias, 2019
In recent years, anthropogenic factors such as pollution, overfishing, and construction of hydroelectric plants have significantly impacted natural fish populations. Research focusing on genetically evaluation of these impacts is necessary to objectively
Nelson Mauricio Lopera-Barrero, Felipe Pinheiro de Souza, Ed Christian Suzuki de Lima, Angela Maria Urrea-Rojas, Pedro Luiz de Castro, Elenice Souza dos Reis Goes, Victor César Freitas Pandolfi, Andrei Lincoln Yamachita, Carlos Antonio Lopes de Oliveira, Natália Gonçalves Leite, Ricardo Pereira Ribeiro   +10 more
doaj   +1 more source

Distribution modelling for Neotropical freshwater stingrays Potamotrygon brachyura and Potamotrygon motoro (Myliobatiformes, Potamotrygonidae) in the Uruguay River basin

Journal of Fish Biology, Volume 108, Issue 1, Page 43-56, January 2026.
Abstract This study aimed to identify geographical distribution patterns of the giant short‐tailed river stingray Potamotrygon brachyura and the motoro stingray Potamotrygon motoro in the Uruguay River basin. Data on presence/absence of stingrays were based on fishers' knowledge accessed by interviews through expeditions in Brazil, Argentina and ...
Danilo Araujo Soares Pereira, Roberto E. Reis, Nelson F. Fontoura   +2 more
wiley   +1 more source

Parâmetros hematológicos, perfil hormonal e morfometria de curimba (Prochilodus lineatus) [PDF]

, 2015
Migratory fish have significant importance in fish farming in Brazil. Hormone-induced fish spawning is a technique that induces final maturation and gamete release, allowing the fish to complete the reproductive cycle under controlled conditions.
Andrade, Eliane Aparecida de
core  

First Records of Length–Weight Relationships for Ten Fish Species From the Middle Stretch of the Uruguay River, Southern Brazil

Journal of Applied Ichthyology, Volume 2026, Issue 1, 2026.
This study estimated the length–weight relationships (LWRs) of 10 fish species from the middle stretch of the Middle Uruguay River basin, aiming to provide new morphometric data and contribute to the knowledge of Neotropical ichthyofauna. Fish were collected at seven sites with sampling conducted at each site during every season, totaling 84 sampling ...
Lucas Adriano Pachla, Marthoni Vinicius Massaro, David Augusto Reynalte-Tataje, Sandra Maria Hartz, Jacob Burbank   +4 more
wiley   +1 more source

Fig. 3 in Otolith morphometry provides length and weight predictions and insights about capture sites of Prochilodus lineatus (Characiformes: Prochilodontidae)

, 2018
Fig. 3. Fits of the linear regressions between lapillus otolith and standard length of Prochilodus lineatus: a. Otolith Length (r2 = 0.80) and b. Otolith Weight (r2 = 0.82); the shaded area represents the confidence interval of 95% of the estimate; loess
Minte-Vera, Carolina Viviana, Santana, Herick Soares de, Rodrigues, Amanda Cantarute   +2 more
core   +1 more source

O papel do dimetilsulfóxido na criopreservação de sêmen de Curimba (Prochilodus lineatus)

Semina: Ciências Agrárias, 2015
 A criopreservação de sêmen de Curimba (Prochilodus lineatus) é de importância ecológica e comercial. O objetivo deste estudo foi avaliar o efeito de diferentes concentrações (2, 5, 8 e 11%) de dimetilsulfóxido (DMSO) diluído em Betsville Thawing ...
Antonio Sergio Varela Junior, Estela Fernandes Silva, Tainã Figueiredo Cardoso, Érica Yokoyama Namba, Rodrigo Desessards Jardim, Danilo Pedro Streit Junior, Carine Dahl Corcini   +6 more
doaj   +1 more source

Anthropogenic Factors Drive the Depletion of Fish Functional Β Diversity Within and Outside Two National Reserves in the Peruvian Amazon

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 12, December 2025.
ABSTRACT Understanding the impact of human activities on fish communities is critical for the effective conservation of Amazonian ecosystems. In this study, we sampled environmental DNA (eDNA) from 17 sites (lakes and rivers) in two Peruvian national reserves, Pacaya‐Samiria and Allpahuayo‐Mishana, using a metabarcoding approach with four genetic ...
B. Prat, C. Mariac, J.‐F. Renno, C. García‐Dávila, C. Angulo, G. Estivals, F. Duponchelle   +6 more
wiley   +1 more source

Cytogenetic Markers in Wild Population of Curimbata (Prochilodus lineatus) from Mogi-Guacu River

, 2009
Within the genus Prochilodus, the species Prochilodus lineatus is certainly the most studied one from a cytogenetic point of view. In this study, a cytogenetic characterization of specimens of P. lineatus from Mogi-Guacu River was performed in the period
Porto-Foresti, Fábio [UNESP], Foresti, Fausto [UNESP], Voltolin, Tatiana Aparecida, Bortolozzi, Jehud, Bortolozzi, Jehud [UNESP], Porto-Foresti, Fábio, Oliveira, Claudio, Oliveira, Claudio [UNESP], Voltolin, Tatiana Aparecida [UNESP], Foresti, Fausto, Senhorini, Jose Augusto   +10 more
core   +1 more source