Results 11 to 20 of about 3,430 (184)

Integrating Cytogenetics and Population Genomics: Allopatry and Neo-Sex Chromosomes May Have Shaped the Genetic Divergence in the Erythrinus erythrinus Species Complex (Teleostei, Characiformes)

Biology, 2022
Diversity found in Neotropical freshwater fish is remarkable. It can even hinder a proper delimitation of many species, with the wolf fish Erythrinus erythrinus (Teleostei, Characiformes) being a notable example.
Fernando H. S. de Souza, Francisco de M. C. Sassi, Pedro H. N. Ferreira, Luiz A. C. Bertollo, Tariq Ezaz, Thomas Liehr, Manolo F. Perez, Marcelo B. Cioffi   +7 more
doaj   +1 more source

THE IMPORTANCE OF FREE STRETCHES IN A DAMMED RIVER TO THE MAINTENANCE OF Schizodon intermedius POPULATIONS

Boletim do Instituto de Pesca, 2019
This paper focuses on to evaluate the importance of a free stretches upstream of a Neotropical reservoir for the maintenance of Schizodon intermedius populations, a medium size migratory species and important fisheries resources.
Felipe Pontieri de Lima, André Batista Nobile, Diogo Freitas-Souza, Jaciara Vanessa Kruger Paes, Sandro Geraldo de Castro Britto, Ana Paula Vidotto-Magnoni   +5 more
doaj   +1 more source

Revealing the Satellite DNA History in Psalidodon and Astyanax Characid Fish by Comparative Satellitomics

Frontiers in Genetics, 2022
Eukaryotic genomes are usually enriched in repetitive DNA sequences, which can be classified as dispersed or tandemly repeated elements. Satellite DNAs are noncoding monomeric sequences organized in a head-to-tail fashion that are generally located on ...
Caio Augusto Gomes Goes, Rodrigo Zeni dos Santos, Weidy Rozendo Clemente Aguiar, Dálete Cássia Vieira Alves, Duílio Mazzoni Zerbinato de Andrade Silva, Fausto Foresti, Claudio Oliveira, Ricardo Utsunomia, Fabio Porto-Foresti   +8 more
doaj   +1 more source

USING STOCK ASSESSMENT TO INVESTIGATE THE SUSTAINABLE FISHERIES OF THE YELLOW MANDI Pimelodus maculatus IN THE UPPER URUGUAY RIVER, SOUTHERN BRAZIL

Boletim do Instituto de Pesca, 2020
The yellow mandi Pimelodus maculatus is a medium-sized species with a wide geographical distribution. The species is very common in the Neotropical region, representing an important share of fishing activity in several Brazilian reservoirs.
Gianfrancisco Schork, Samara Hermes-Silva, Renata Maria Guereschi, Evoy Zaniboni-Filho, Alex Pires de Oliveira NUÑER   +4 more
doaj   +1 more source

“Um peixe é um peixe”, ou a escada de Tolstói

RUS (São Paulo), 2021
Este artigo debruça-se sobre a versão dos evangelhos de Tolstói, explorando os seus procedimentos interpretativos e metodológicos. Visa mostrar que esta obra singular procede em larga medida das experiências pedagógicas de Tolstói nas décadas de 1860-70 e que nela se jogam muitas das questões que iriam mais tarde surgir na filosofia de Wittgenstein.
openaire   +5 more sources

Investigating an Unknown Biodiversity: Evidence of Distinct Lineages of the Endemic Chola Guitarfish Pseudobatos percellens Walbaum, 1792 in the Western Atlantic Ocean

Diversity, 2023
Anthropogenic actions have affected marine species for a long time, through overexploitation of natural stocks and habitat degradation, influencing the life strategies of several taxa, especially rays and sharks, which have suffered significant ...
Vanessa P. Cruz, Matheus M. Rotundo, Patrícia Charvet, Beatriz R. Boza, Bruno C. Souza, Najila N. C. D. Cerqueira, Claudio Oliveira, Rosângela Lessa, Fausto Foresti   +8 more
doaj   +1 more source

EVALUATION OF NEOMALE Rhamdia quelen PROGENY GROWING AT VARIOUS STOCKING DENSITIES

Boletim do Instituto de Pesca, 2019
Monosex female jundiá (Rhamdia quelen) generated through indirect sex reversal may have their growth influenced by the stocking density, which is an important factor for production in fish farming. Since zootechnical data from R.
Vanessa Martins da ROCHA, Susan Kelly Rodrigues de Sousa CHAVEIRO, Luciano Augusto WEISS, Alex Pires de Oliveira NUÑER   +3 more
doaj   +1 more source

Peix pesant?

Educació Química : EduQ, 2008
Estudi de la concentració de diversos metalls pensants (cadmi, coure, plom, zinc i níquel) en dos aliments d'origen marí (salmó i musclos) mitjançant la tècnica d'espectrofotometria d'absorció atòmica i fem una comparació dels resultats amb els límits establerts en la normativa vigent.
Riera Palomino, Adrià, Díaz i Rovira, Lourdes   +1 more
openaire   +2 more sources

Conservation status of the "Piracanjuba" Brycon orbignyanus (Valenciennes, 1850) (Characiformes, Bryconidae): basis for management programs

Biodiversidade Brasileira, 2017
A exploração excessiva dos recursos de água doce tem causado muitos impactos sobre as populações naturais, especialmente em peixes. Diferentes fatores relacionados com a poluição, sobrepesca, introdução de espécies exóticas, construção de barragens e ...
Daniela José de Oliveira, Fernando Yuldi Ashikaga, Fausto Foresti, José Augusto Senhorini   +3 more
doaj   +3 more sources

A new species of the catfish genus Cambeva from the Paranapanema river drainage, southeastern Brazil (Siluriformes: Trichomycteridae)

Tropical Zoology, 2020
The recently described catfish trichomycterid genus Cambeva comprises about 25 valid species, occurring mostly in river basins of south-eastern and southern Brazil. Fifteen species are endemic to the Paraná river basin, of which three are endemic to the
Axel M. Katz, Wilson J.E.M. Costa
doaj   +1 more source