Results 71 to 80 of about 14,954 (263)
Neotropical IchthyologyAstyanax eremus, a new species of geographically isolated characid fish, is described from a small tributary of the upper rio Iguaçu basin. The new species belongs to the Astyanax scabripinnisspecies complex and is easily distinguished from its congeners
Leonardo F. S. Ingenito, Luiz F. Duboc
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Acta Scientiarum: Biological Sciences, 2008 Garutti (1995) fez a revisão de algumas espécies de Astyanax (Osteichthyes, Characidae) e aquela, conhecida como “tambiú” na bacia do alto rio Paraná, anteriormente identificada como Astyanax bimaculatus, foi considerada nova e posteriormente descrita ...
Weferson Júnio da Graça +1 more
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Modulação das respostas fenotípicas de leucócitos de >i<Astyanax lacustris>/i< expostos a aflatoxina B>sub<1>/sub< [PDF]
, 2023 Talita Maria Lázaro
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Brain Transcriptomics Reveals Molecular Mechanisms of Cave Adaptation in Triplophysa Loaches
Ecology and Evolution, Volume 15, Issue 12, December 2025.This study compares brain transcriptomes of cave (Triplophysa shilinensis) and surface‐dwelling (T. xiangshuingensis) loaches to uncover molecular adaptations to subterranean life. We identified widespread gene down‐regulation in the cave ecotype, with enriched pathways in energy metabolism, circadian rhythms, sensory perception, and body coloration ...
Chunqing Li +4 more
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Neotropical IchthyologyTwo new Astyanax species, A. vermilion, from rio Almada and rio Cachoeira, and A. burgerai, from rio Almada, Bahia State, Brazil, are described. Astyanax vermilion is distinguished from most of its congeners and from all other Astyanax species known from
Angela M. Zanata, Priscila Camelier
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Astyanax surface and cave fish morphs
EvoDevo, 2020 The small teleost fish Astyanax mexicanus has emerged as an outstanding model for studying many biological topics in the context of evolution. A major attribute is conspecific surface dwelling (surface fish) and blind cave dwelling (cavefish) morphs that
William R. Jeffery
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Bibliografía de los peces de agua dulce de Argentina y Uruguay : Suplemento 1982 [PDF]
, 1982 Fil: López, Hugo Luis. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Menni, Roberto Carlos. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Ringuelet, Raúl Adolfo. Instituto de Limnología Dr. Raúl A. Ringuelet (ILPLA); Facultad de
López, Hugo Luis +2 more
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From Genomic Fossils to Functional Elements: The Evolving Story of Pseudogenes
Advanced Genetics, Volume 6, Issue 4, December 2025.This review begins with an introduction, summarizing the research background in pseudogene studies. It then contains three aspects: identification of pseudogenes, detailing their classification and features in metazoan genomes; functional pseudogenes, introducing their reactivation and regulation mechanisms; and pseudogenes’ contribution to species ...
Mengyao Sun, Yanni Ma, Jia Yu
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Memorias do Instituto Oswaldo Cruz, 1988 A new species of Urocleidoides, U. astyanacis (Monogenea, Ancyrocephalinae) is described from the "lambari" Astyanax scabripinnis (Jenyns, 1842) and A. fasciatus (Cuvier, 1819).
Ismael Gioia +2 more
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Hypocretin underlies the evolution of sleep loss in the Mexican cavefish [PDF]
, 2018 The duration of sleep varies dramatically between species, yet little is known about the genetic basis or evolutionary factors driving this variation in behavior. The Mexican cavefish, Astyanax mexicanus, exists as surface populations that inhabit rivers,
Duboue, Erik R. +5 more
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