Results 41 to 50 of about 722 (134)

Malagoniella astyanax subsp. astyanax

Published as part of Rosa, Cecilia Lozano De La, Cupello, Mario & Vaz-De-Mello, Fernando Z., 2024, The dung beetles of Venezuela (Coleoptera: Scarabaeidae: Scarabaeinae): catalogue and updated distribution, pp. 1-272 in European Journal of Taxonomy 959 (1) on pages 139-141, DOI: 10.5852/ejt.2024.959.2677, http://zenodo.org/record ...
Rosa, Cecilia Lozano De La, Cupello, Mario, Vaz-De-Mello, Fernando Z.   +2 more
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The complex origin of Astyanax cavefish [PDF]

BMC Evolutionary Biology, 2012
The loss of phenotypic characters is a common feature of evolution. Cave organisms provide excellent models for investigating the underlying patterns and processes governing the evolutionary loss of phenotypic traits. The blind Mexican cavefish, Astyanax mexicanus, represents a particularly strong model for both developmental and genetic analyses as ...
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Astyanax aeneus

, 2023
Astyanax aeneus (Günther 1860). Banded Tetra; Sardina, Sardina de Río, Sardinilla, Sabalete, Sábalo, Sardina Común, Plateada, Machaca, Coliroja, Picaculo, Golosa, Tetra, Mojarra Vouchers: Not available. Distribution: Central America; from central Mexico to southern Honduras-northern Nicaragua, Pacific drainages; (Nicaragua) Ch (Pacific); 279–319 masl ...
Angulo, Arturo, Betts, Joel T., González-Alemán, Néstor J., Castañeda, Edgar, Berghe, Eric Van Den, Elías, Diego J., Mcmahan, Caleb D., Matamoros, Wilfredo A.   +7 more
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Comparative cytogenetics in Astyanax (Characiformes: Characidae) with focus on the cytotaxonomy of the group

Neotropical Ichthyology
Astyanax is a diverse group of Neotropical fishes, whose different forms occupy different environments. This great diversity is also reflected on cytogenetic aspects and molecular markers, which have repeatedly been demonstrated by cytogenetic studies ...
Renata Cristina Claudino de Oliveira Tenório, Carla de Andrade Vitorino, Issakar Lima Souza, Claudio Oliveira, Paulo Cesar Venere   +4 more
doaj   +1 more source

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

Astyanax fasciatus

, 2006
Astyanax cf. fasciatus: MLP 7115, 1 ex., 47.8 mm, Argentina, Santa Fe, Paraná basin, San José del Rincón. AI 111, 2 ex., 57.8- 62.6 mm, Argentina, Buenos Aires, Argentina, Salta, Orán de la Plata in Punta Lara. MLP 8647, 5 ex. 34.0-45.8 mm, Argentina, Santiago del Estero, Río Salado.
Juan Marcos Mirande, Gastón Aguilera, María de las Mercedes Azpelicueta   +2 more
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Astyanax bransfordii

, 2023
Astyanax bransfordii (Gill 1877) (Fig. 7A). Longjaw Tetra; Sardina, Sardina Picuda, Picuda, Sábalo, Sabalete, Sardina Hocicuda, Sardina Dientona Vouchers: UCR 0024-001 (4), 0061-001 (1), 0063-005 (3), 0535-001 (6), 0542-004 (4), 0552-004 (2), 1051-017 (4), 1065-002 (4), 1066-006 (1) and 3122-003 (2); FMNH 5919 (18), 5920 (2), 5921 (1), 5922 (1), 33077 (
Angulo, Arturo, Betts, Joel T., González-Alemán, Néstor J., Castañeda, Edgar, Berghe, Eric Van Den, Elías, Diego J., Mcmahan, Caleb D., Matamoros, Wilfredo A.   +7 more
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Cytogenetic divergence in two sympatric fish species of the genus Astyanax Baird and Girard, 1854 (Characiformes, Characidae) from northeastern Brazil

Genetics and Molecular Biology, 2012
The fish genus Astyanax is widespread throughout the Neotropical region and is one of the most species-rich genera of the Characiformes. Cytogenetic studies of Astyanax have revealed marked intra-and interspecific diversity, with the identification of ...
Aline Souza Medrado, Mavione Souza Ribeiro, Paulo Roberto Antunes de Mello Affonso, Paulo Luíz Souza Carneiro, Marco Antônio Costa   +4 more
doaj  

Combined Effects of Algae‐Supplemented Feeding Regimes and Water Temperature on Sperm Quality of Common Carp (Cyprinus carpio) Broodstock During Spawning

Aquaculture, Fish and Fisheries, Volume 6, Issue 4, August 2026.
ABSTRACT This exploratory study investigated associations between dietary algae supplementation (1% and 3%) and sperm quality in male common carp (Cyprinus carpio) broodstock during two consecutive spawning seasons under commercial farming conditions. Sperm quality was evaluated using conventional motility and kinetic parameters together with analyses ...
Gergely Bernáth, Borbála Nagy, Enikő Solymosi, Tamás Zsáky, Ákos Koós, Attila Komóczi, Viktor Nagy, Vilmos Pásztor, János Sztanó, János Ladányi, György Lódi, Péter Antal, Tamás Szabó, Tamás Bartucz, Dávid Várkonyi, Zsolt Bajári, István Bartos, Róbert Petényi, Gergely Berecz, Márton Kirchner, Béla Urbányi, Árpád István Harmati, Zoltán Bokor   +22 more
wiley   +1 more source

Three new species of Astyanax from drainages of southern Brazil (Characiformes: Characidae)

Neotropical Ichthyology
Three new species of Astyanax are described from southern Brazil: A. dissensus and A. xiru from the laguna dos Patos system and rio Uruguay basin, the first species also occurring in the rio Tramandaí system, and A.
Carlos A. S. de Lucena, Jonas Blanco Castro, Vinicius A. Bertaco   +2 more
doaj   +1 more source