Results 31 to 40 of about 205 (157)

Transferability of heterologous primers in Brycon falcatus [PDF]

open access: yesActa Amazonica, 2020
The genusBryconcomprises fish species of significant socioeconomic and biological importance in Brazil. Despite that, the genetic knowledge about these species is scarce, especially regardingBrycon falcatus.
Diego dos Santos PENHA   +9 more
doaj   +1 more source

Brycon orbignyanus

open access: yes, 2018
Brycon orbignyanus (Valenciennes, 1850) Fig. 6 Body deep; greatest depth contained 2.8 to 3.4, caudal peduncle depth 9.2 to 11.7 times in SL; head length 3.3 to 5.1, predorsal distance 1.8 to 2.1, caudal peduncle length 5.3 to 7.8 in SL; snout length 2.7 to 3.6, horizontal orbital diameter 3.1 to 5.0 and least interorbital width 2.1 to 3.0 in HL. Mouth
Ota, Renata Rúbia   +3 more
openaire   +2 more sources

Morfologia da micrópila e da superfície dos ovócitos de piracanjuba, Brycon orbignyanus (Osteichthyes, Characidae), sob microscopia eletrônica de varredura - DOI: 10.4025/actascibiolsci.v25i1.2097

open access: yesActa Scientiarum: Biological Sciences, 2008
Este trabalho analisou a morfologia dos ovócitos de Brycon orbignyanus (Osteichthyes, Characidae), por meio de análises em microscopia eletrônica de varredura (MEV). Amostras de ovários de piracanjubas adultas foram coletadas.
Luciana Nakaghi Ganeco   +1 more
doaj   +1 more source

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

open access: yesSemina: 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   +10 more
doaj   +1 more source

First evidence of a spawning site of the endangered fish Brycon orbignyanus (Valenciennes, 1850) (Characiformes, Bryconidae) in the Middle Uruguay River, Brazil

open access: yesActa Limnologica Brasiliensia, 2020
: Aim This study provides the first direct evidence about the location of a spawning site of Brycon orbignyanus (Valenciennes, 1850) in the Middle Uruguay River.
David Augusto Reynalte-Tataje   +4 more
doaj   +1 more source

Fish Sperm Subpopulations Detection, Separation, and Application: Current State and Trends

open access: yesReviews in Aquaculture, Volume 18, Issue 4, September 2026.
Modern advances in sperm biology highlight the necessity of recognising intra‐ejaculate heterogeneity as a central concept for advancing both the fundamental understanding of fertilisation processes and the development of artificial reproduction techniques in fishes. ABSTRACT Sperm subpopulations represent a fundamental manifestation of intra‐ejaculate
Viktoriya Dzyuba   +2 more
wiley   +1 more source

Optimization of heterologous microsatellites in Piracanjuba

open access: yesPesquisa Agropecuária Brasileira, 2015
: The objective of this work was to evaluate 41 microsatellite markers for heterologous amplifications in piracanjuba (Brycon orbignyanus). Some markers were tested for the first time.
Fausto Moreira da Silva Carmo   +3 more
doaj   +1 more source

Semi‐Artificial Breeding Report of Endangered Chitala lopis Using Hormonal Induction Treatments

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 4, August 2026.
The graphical abstract of the first successful semi‐artificial breeding of the endangered Giant Featherback (Chitala lopis, Bleeker 1851) by hormonal induction ABSTRACT Reproductive maturity of Chitala lopis is critical for preventing species loss, as the species was previously listed as critically endangered on the IUCN Red List.
Boby Muslimin   +18 more
wiley   +1 more source

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

open access: yesAquatic 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   +8 more
wiley   +1 more source

Monitoring of Salmonella spp. in Native Fish Farms in the Pantanal and Cerrado Biomes, Brazil: Serotype Diversity, Antimicrobial Resistance Profiles, and Multivatiate Patterns 

open access: yesJournal of Food Safety, Volume 45, Issue 6, December 2025.
This study investigated Salmonella spp. occurrence, serotypes, antimicrobial resistance, and associated environmental and management factors in 25 native fish farms located in the Pantanal and Cerrado biomes, Brazil. A total of 184 fish and environmental samples were analyzed using standardized methods and multivariate statistics. Salmonella spp.
Yuri Duarte Porto   +9 more
wiley   +1 more source

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