Results 61 to 70 of about 3,703 (198)

Response of Prochilodus nigricans to flood pulse variation in the central Amazon [PDF]

Royal Society Open Science, 2018
The influence of the flood pulse on fish populations has been posited, but infrequently tested or quantified. Here, we tested the effect of habitat on population size, using Prochilodus nigricans as a case study species. Floodplain habitat was based on the littoral zone area occupied by P. nigricans
Peter B. Bayley, Leandro Castello, Vandick S. Batista, Nidia N. Fabré   +3 more
openaire   +3 more sources

High trophic niche overlap between sympatric peacock basses (Cichliformes: Cichlidae: Cichla): Concordant findings from three dietary analysis methods

Journal of Fish Biology, Volume 109, Issue 2, Page 1034-1045, August 2026.
Abstract Dietary analysis has contributed to our understanding of animal niches, interspecific interactions, community structure and the flow of matter and energy in food webs. We employed three methods of dietary analysis to estimate trophic niche overlap between two peacock bass species, Cichla cataractae and Cichla ocellaris, across sympatric ...
Benton L. Fry, Hayden C. Roberts, Kirk O. Winemiller   +2 more
wiley   +1 more source

Cross-amplification of heterologous microsatellite markers in Piracanjuba

Ciência Rural, 2017
: Brycon orbignyanus, popularly known in Brazil as piracanjuba, is a fish with great economic value but whose natural population drastically decreased in number during the last years.
Pedro Luiz de Castro, Ricardo Pereira Ribeiro, Silvio Carlos Alves dos Santos, Elenice Souza dos Reis Goes, Felipe Pinheiro de Souza, Angela Rocio Poveda-Parra, Lauro Vargas, Angela Maria Urrea-Rojas, Nelson Mauricio Lopera-Barrero   +8 more
doaj   +1 more source

Disentangling Environmental, Spatial and Niche Influences on Fish Beta Diversity Along the Sandy Beaches of an Amazonian River

Freshwater Biology, Volume 71, Issue 7, July 2026.
ABSTRACT Beta diversity is an important descriptor of community structuring and it plays a crucial role for understanding the patterns and processes shaping biodiversity at multiple spatial extents. We investigated the influence of local, spatial, landscape factors and niche characteristics on fish beta diversity along the Acre River in Acre, Brazil ...
Ronaldo S. Silva, Lucas P. Oliveira, Naraiana L. Benone, Jean C. G. Ortega, Antonio A. Jardim Jr, Lídia B. Seabra, Fabiano Corrêa, Lisandro J. S. Vieira, Robert M. Hughes, Luciano F. A. Montag   +9 more
wiley   +1 more source

Low genetic variability in Prochilodus lacustris and Prochilodus nigricans from river basins of northern and northeastern Brazil

Boletim do Instituto de Pesca
The genus Prochilodus is an important fish resource. The various species within this genus are morphologically very similar, making reliable taxonomic identification difficult and creating uncertainty regarding the exact status of the different forms ...
Elidy Rayane de Rezende Franca, Jordânia Leticia do Nascimento Silva, Fernanda da Conceição Silva, Maria Histelle Sousa Nascimento, Fabiano Corrêa, Maria Claudene Barros, Elmary da Costa Fraga   +6 more
doaj   +1 more source

New cases of supernumerary chromosomes in characiform fishes

Genetics and Molecular Biology, 1999
Supernumerary chromosomes were described for five species of Neotropical characiform fishes. These extra chromosomes were small, acrocentric and fully heterochromatic in Leporinus friderici from two different localities as well as in Leporinus sp., but ...
Paulo Cesar Venere, Carlos Suetoshi Miyazawa, Pedro Manoel Galetti Junior   +2 more
doaj   +1 more source

Fertilizing Capacity of the Cryopreserved Sperm of Prochilodus brevis

Acta Scientiae Veterinariae, 2019
Background: Seminal cryopreservation is a technique that optimizes aquacultural production, as it requires less breeding and enables reproduction outside of the breeding season. This technique also helps to preserve species, thus reducing the pressure on the natural stocks.
Nunes, Larissa Teixeira, Oliveira-Araújo, Mayara Setúbal, Lopes, Júlia Trugilio, de Almeida-Monteiro, Piscila Silva, do Nascimento, Renata Vieira, Pereira, Vanessa Alves, Ferreira, Yasmin Maia, Montenegro, Assis Rubém, Ferreira, Jéssica Uchôa, Salmito-Vanderley, Carmindra Sandra Brito   +9 more
openaire   +3 more sources

Origem, herança e estrutura dos cromossomos supranumerários no gênero Prochilodus (Characiformes, Prochilodontidae) [PDF]

, 2012
A família Prochilodontidae apresenta uma extraordinária estabilidade dos caracteres morfológicos e merísticos, o qual pode estar relacionado ao fato de efetuarem grandes migrações com propósito reprodutivo, dispersando-se em grandes áreas. Sob o ponto de
Voltolin, Tatiana Aparecida [UNESP]
core   +2 more sources

Genetic Structure and Conservation Strategies for the Endangered Catfish Steindachneridion melanodermatum (Siluriformes, Pimelodidae) in the Iguaçu River, Brazil

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.
ABSTRACT The endemic catfish Steindachneridion melanodermatum from the Iguaçu River basin, southern Brazil, is one of the most threatened pimelodid species. Comprehension of its genetic structure is imperative to the formulation of long‐term efficacious conservation strategies. A genetic analysis was conducted on three populations from the lower Iguaçu
Jesús Hernández‐Gómez, Caio Felipe da Silva, Carolina de Oliveira Magalhães, Bruno Henrique Mattiello, Juliano Tupan Coragem, Ricardo Utsunomia, Fabio Porto‐Foresti, Fernanda Dotti do Prado, Roberto Ferreira Artoni   +8 more
wiley   +1 more source

Life‐History and Landscape Context Shaping the Spatial Genetic Structure of the Migratory Amazonian Fish Prochilodus nigricans

Freshwater Biology, Volume 71, Issue 6, June 2026.
ABSTRACT The Neotropical migratory fish Prochilodus nigricans plays a critical ecological and socioeconomic role in the Amazon basin. Nevertheless, little is known about its populations and the genetic diversity pattern of the species. In light of this, the current study investigates the spatial genetic structure and diversity of P.
Ueslei Lopes, Josiane Ribolli, Carolina B. Machado, Rosane Silva‐Santos, Pedro M. Galetti Jr., Patrícia D. Freitas   +5 more
wiley   +1 more source