Results 41 to 50 of about 1,315 (199)

Low‐Effort eDNA Sampling Reveals Fish Community Patterns in a Neotropical River Basin

Environmental DNA, Volume 7, Issue 4, July–August 2025.
Low eDNA sampling effort (< 10 sample sites) using a portable on‐site kit with syringe filters and a modest water volume (< 500 mL per site) provided a rapid and robust snapshot of fish biodiversity. Environmental DNA based species richness increases along the upstream‐downstream gradient showing a significant negative correlation with river elevation ...
Daniel Cardoso Carvalho, Heron Oliveira Hilário, Igor Henrique Nascimento, Guilherme Costa Berger, Paulo Santos Pompeu   +4 more
wiley   +1 more source

Atividade proteolítica e crescimento de matrinxã em natação sustentada e alimentado com dois níveis de proteína. [PDF]

, 2019
O objetivo deste trabalho foi avaliar o efeito da natação sustentada sobre a atividade digestiva proteolítica e o crescimento de juvenis de matrinxã (Brycon amazonicus), alimentados com dois níveis de ...
ARBELÁEZ-ROJAS, G. A., INOUE, L. A. K. A., MORAES, G.   +2 more
core  

Sperm Quality, Milt Biochemistry, and Cellular Ultrastructure in Fresh and Cryopreserved Sperm of Brycon amazonicus

Aquaculture Research, Volume 2025, Issue 1, 2025.
Milt cryopreservation facilitates native fish’s constant production of commercial interest. However, it can damage spermatozoa (sptz) due to the osmotic stress of diluents and low temperatures. This study compares spermatic quality in fresh (SF) and cryopreserved (CS) milt in B. amazonicus for 24 h, 1 month, and 3 months.
Owens José Barros-Barrios, Roger Oswaldo Suárez-Martínez, Edwin Gómez-Ramírez, Diana Nathalie Guaje-Ramírez, Víctor Mauricio Medina-Robles   +4 more
wiley   +1 more source

Diversidad genética de piracanjuba usada en programas de repoblación con marcadores microsatélites Genetic diversity of piracanjuba used in stock enhancement programs with microsatellite markers

Pesquisa Agropecuária Brasileira, 2010
El objetivo de este trabajo fue estimar la diversidad genética de un lote de Brycon orbignyanus usado en programas de repoblación, a través de marcadores microsatélites.
Maria del Pilar Rodriguez-Rodriguez, Nelson Mauricio Lopera-Barrero, Ricardo Pereira Ribeiro, Jayme Aparecido Povh, Lauro Vargas, Rodolfo Nardez Sirol, Carolina Bespalhok Jacometo   +6 more
doaj   +1 more source

Length‒Weight and Length‒Length Relationships of Freshwater Fish Species Caught by Professional Fishermen in the Itaipu Reservoir, Brazil

Journal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
Length‒weight relationships (LWRs) and length‒length relationships (LLRs) were estimated for 63 and 58 freshwater fish species, respectively, captured in the Itaipu Reservoir, Paraná River Basin, Paraná State, Brazil. Sampling was carried out from March 1987 to July 2024 at 63 professional fishing sites within the reservoir’s area of influence ...
Éder André Gubiani, Luiz Guilherme dos Santos Ribas, Anderson Luís Maciel, Geuza Cantanhêde, Laís Thayse Meier, Pitágoras Augusto Piana, Caroline Henn, Yintao Jia   +7 more
wiley   +1 more source

Hematological and morphometric blood value of four cultured species of economically important tropical foodfish

Neotropical Ichthyology
The use and validation of fish health monitoring tools have become increasingly evident due to aquaculture expansion. This study investigated the hematology and blood morphometrics of Piaractus mesopotamicus, Brycon orbignyanus, Oreochromis niloticus and
Genoefa Amália Dal'Bó, Fernanda Garcia Sampaio, Marcos Eliseu Losekann, Julio Ferraz de Queiroz, Alfredo José Barreto Luiz, Verena Hildegard Gyárfas Wolf, Vitória Teodoro Gonçalves, Maria Lidia Carra   +7 more
doaj   +1 more source

Relação peso-comprimento e fator de condição relativo (Kn) do pirarucu Arapaima gigas Schinz, 1822 (Arapaimidae) em cultivo semi-intensivo no estado do Amazonas, Brasil. [PDF]

, 2017
O pirarucu Arapaima gigas (Osteoglossiformes, Arapaimidae), peixe da bacia amazônica, apresenta alta taxa de crescimento e tolerância a alta densidade de estocagem, tem rusticidade ao manuseio e aceita alimentação artificial quando treinado no início da ...
ANDRADE, S. M. S., ARAÚJO, C. S. O., DIAS, M. T., GOMES, A. L. S.   +3 more
core  

Isolation and characterization of Flavobacterium columnare (Bernardet et al. 2002) from four tropical fish species in Brazil

Brazilian Journal of Biology
Flavobacterium columnare is the causative agent of columnaris disease in freshwater fish, implicated in skin and gill disease, often causing high mortality.
F. Pilarski, AJ. Rossini, PS. Ceccarelli
doaj   +1 more source

Morphological and behavioral development of the piracanjuba larvae Desenvolvimento morfológico e comportamental de larvas de piracanjuba

Revista Brasileira de Zootecnia, 2010
The objective of this work was to study the morphologic development and the swimming and feeding behaviors of piracanjuba larvae, Brycon orbignyanus Valenciennes (1849) (Characiformes, Characidae, Bryconinae), during the period from zero to 172 hours ...
Cláudia Maria Reis Raposo Maciel, Eduardo Arruda Teixeira Lanna, Alaor Maciel Junior, Juarez Lopes Donzele, Clóvis Andrade Neves, Eliane Menin   +5 more
doaj   +1 more source

Parasites of juvenile Salminus brasiliensis and Brycon orbignyanus (Characiformes, Bryconidae) in the middle Paraná River, Argentina

Acta Scientiarum: Biological Sciences, 2023
Piscivorous Salminus brasiliensis and herbivorous/omnivorous Brycon orbignyanus often form mixed schools in the same habitats. The aims of this study were: (a) to analyze and compare ecto- and endoparasite communities in juvenile S.
Exequiel Oscar Furlan, Silvina Beatriz Chemes, Pablo Augusto Scarabotti   +2 more
doaj   +1 more source