Results 51 to 60 of about 12,679 (227)

On some species of Astyanax reported erroneously from Argentina [PDF]

, 2015
Several species of Astyanax have been reported from Argentina which currently are considered not to be distributed so far South or whose identity as Astyanax is doubtful.
Koerber, Stefan, Mirande, Juan Marcos
core  

A latitudinal cline in the efficacy of endogenous signals: evidence derived from retinal cone contraction in fish. [PDF]

, 2011
Like many physiological systems synchronised to the light:dark cycle, retinomotor movements in 'lower' vertebrates are controlled by both the ambient illumination and input from endogenous circadian oscillators.
Allemand, Allemand, Arey, Besharse, Burnside, Burnside, Burnside, Cahill, Cahill, Costa, Dearry, Douglas, Douglas, Douglas, Douglas, Easter, Foster, Foster, Foster, Goldman, Green, Gwinner, Hastings, Hau, Iigo, Iuvone, John, John, John, John, Johnsen, Joshi, Joshi, Keny, Kirsch, Konings, Kullander, Kyriacou, Lamb, Lankinen, Lankinen, Levinson, Lofts, Lu, Lythgoe, Mayer, McCormack, McCormack, McCormack, McFarland, Menger, Michael, Olla, Perlman, Pflüger, Pittendirgh, Pittendrigh, Ribelayga, Satralkar, Satralkar, Sawyer, Shand, Simunovic, Tosini, Tosini, Wagner, Weeks, Weitzman, Welsh, Whitmore, Wigger, Yeates-Burghart   +71 more
core   +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

Teleosts as Models for Epigenetic Inheritance

Molecular Ecology, Volume 35, Issue 5, March 2026.
ABSTRACT Teleost fish exhibit a striking divergence from mammals in how they regulate their epigenome. Unlike mammals, they do not undergo the extensive DNA methylation erasure and resetting events that occur during early embryogenesis, germline specification, and spermatogenesis.
Adauto Lima Cardoso, Ozren Bogdanovic
wiley   +1 more source

Parallel developmental genetic features underlie stickleback gill raker evolution. [PDF]

, 2014
BackgroundConvergent evolution, the repeated evolution of similar phenotypes in independent lineages, provides natural replicates to study mechanisms of evolution.
Cleves, Phillip A, Erickson, Priscilla A, Glazer, Andrew M, Lam, Angela Y, Miller, Craig T   +4 more
core   +2 more sources

Ocular Morphology and Clinical Ophthalmic Parameters of Nile Tilapia Oreochromis niloticus

Veterinary Ophthalmology, Volume 29, Issue 2, March 2026.
ABSTRACT Objective To describe the ocular morphological characteristics and establish clinical and ophthalmic reference standards for Nile tilapia. Animals Studied Fresh carcasses were used for diaphanization, optical and electron microscopy, and computed tomography analyses.
Dandara Franco Ferreira da Silva, Lucélia Gonçalves Vieira, Pedro Vale de Azevedo Brito, Sonia Nair Báo, Ingrid Gracielle Martins da Silva, Rodrigo Diana Navarro, Clarissa Machado de Carvalho, Paula Diniz Galera, Daniel Henrique Viana da Silva, Weslley de Souza Barbosa, Rosélia de Lima Sousa Araújo, Giane Regina Paludo, Liria Queiroz Luz Hirano   +12 more
wiley   +1 more source

Bat Migration Intensifies Cave Fish Richness Loss Under Climate Change in China

Diversity and Distributions, Volume 32, Issue 2, February 2026.
ABSTRACT Aim Cave fish, the largest aquatic vertebrates in karst ecosystems, rely heavily on bat guano as a nutrient source. However, ongoing environmental change is degrading cave habitats and altering bat distributions. This study aims to assess how climate‐driven bat migration affects cave fish distributions in China, providing insights for ...
Xiongfeng Bai, Peng Zhang, Benjamin R. Shipley, Tao Ju, Yiran Zhang, Guohuan Su, Xianghong Dong   +6 more
wiley   +1 more source

Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes)

Neotropical Ichthyology
Tetragonopoterus aeneus Hensel (1870) is removed from synonymy with Astyanax fasciatus (Cuvier, 1819), revalidated and redescribed as A. henseli to avoid homonymy. Astyanax henseli differs from A. fasciatus stricto sensu and other Astyanax species by the
Filipe A. G. de Melo, Paulo A. Buckup
doaj   +1 more source

Population analysis of a chromosome polymorphism in Astyanax (Teleostei, Characiformes) species endemic to the Iguaçu River

Genetics and Molecular Biology, 2008
Chromosomal analyses were performed in the fish Astyanax sp.D collected from three different points: two streams from the right bank and one from the left bank of the Upper Iguaçu River, Paraná State, Brazil.
Daniel Luis Zanella Kantek, Roger Raupp Cipriano, Rafael Bueno Noleto, Alberto Sergio Fenocchio, Roberto Ferreira Artoni, Marta Margarete Cestari   +5 more
doaj   +1 more source

Morphological variation of Astyanax species, subgenus Zygogaster (Teleostei, Characidae) [PDF]

, 2011
Astyanax es un género diverso de peces neotropicales, cuyas especies habitan gran variedad de ambientes acuáticos. La situación taxonómica de los subgéneros y de sus especies, no difiere de la problemática que presenta el género Astyanax.
Ermakova–A., A., Herrera–M., B. E., Peláez, O. E., Román–Valencia, C., Ruiz-C., R. I.   +4 more
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