Results 61 to 70 of about 2,967 (200)

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

Reviews 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, William V. Holt, Borys Dzyuba   +2 more
wiley   +1 more source

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

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

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

Integrating curimba culture during the grow‐out phase of tambaqui affects overall productivity, water quality, and fish health

Journal of the World Aquaculture Society, Volume 57, Issue 3, June 2026.
Abstract The efficiency of feed use in aquaculture may be improved by integrating the culture of extractive species into fed‐species systems. This study assessed the impact of including curimba (Prochilodus lineatus) in tambaqui (Colossoma macropomum) production during the grow‐out phase in earthen ponds.
Adriana Ferreira Lima, André Silvério Pereira, Luciana Nakaghi Ganeco‐Kirschnik, Patricia Oliveira Maciel‐Honda, Wagner C. Valenti   +4 more
wiley   +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

Fig. 2 in Plasticity in the shape and growth pattern of asteriscus otolith of black prochilodus Prochilodus nigricans (Teleostei: Characiformes: Prochilodontidae) freshwater Neotropical migratory fish

, 2018
Fig. 2. Canonical variate analysis of the first 5 PC compo- nents and fish length data of the Prochilodus nigricans for all localities, with 95% confidence.
Amadio, Sidinéia Aparecida, Tuset, Víctor Manuel, Costa, Rosa Maria Rodrigues da, Fabré, Nidia Noemí   +3 more
core   +1 more source

Fig. 3 in Plasticity in the shape and growth pattern of asteriscus otolith of black prochilodus Prochilodus nigricans (Teleostei: Characiformes: Prochilodontidae) freshwater Neotropical migratory fish

, 2018
Fig. 3. Cluster analysis based on the euclidean distances of the wavelet functions by shape analysis of asteriscus otoliths Prochilodus nigricans between rivers.
Amadio, Sidinéia Aparecida, Tuset, Víctor Manuel, Costa, Rosa Maria Rodrigues da, Fabré, Nidia Noemí   +3 more
core   +1 more source

Paramphistomidae (Trematoda: Digenea) de peixes de água doce: dois novos gêneros da Colômbia e uma redescrição de Dadaytrema Oxycephala (Diesing, 1836) Travassos, 1934, da Amazônia [PDF]

Acta Amazonica, 1979
Resumo Dois novos gêneros e espécies de Paramphistomidae Fischoeder. 1901 (Trematoda: Digenea) dos tratos intestinais de peixes foram descritos, a saber: Colocladorchis ventrastomis a. gen., n. sp.
Vernon E. Thatcher
doaj   +1 more source

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