Results 11 to 20 of about 14,792 (222)

Characterization of Mitochondrial Genomes and Evolutionary Relationships in Two Moenkhausia (Characiformes: Acestrorhamphidae) [PDF]

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
This study successfully decoded the complete mitochondrial genomes of two Moenkhausia species, with total lengths of 16,439 and 16,461 bp, respectively. This study enhances genomic resources for Acestrorhamphidae and provides a foundation for investigating evolutionary mechanisms and developing molecular markers.
Cheng‐He Sun   +4 more
wiley   +2 more sources

Water Parameters and Hydrodynamics in Rivers and Caves Hosting Astyanax mexicanus Populations Reveal Macro‐, Meso‐ and Microhabitat Characteristics [PDF]

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
From 2009 to 2025, we have recorded the physicochemical parameters of the water and the hydrological regimes at localities hosting Astyanax mexicanus cavefish and surface fish populations in Mexico. Sampling 13 caves and 30 surface stations revealed strong signatures of the two macrohabitats, but also significant differences in specific water ...
Laurent Legendre   +5 more
wiley   +2 more sources

Antioxidant Defenses in the Kidneys and Heart of the Freshwater Fish Astyanax lacustris Subjected to High (31°C) and Low (15°C) Temperatures [PDF]

open access: yesCell Biochemistry and Function, Volume 43, Issue 11, November 2025.
ABSTRACT Aquatic ecosystems have their abiotic and biotic factors constantly altered by various factors. Among them, water temperature is an abiotic factor that can significantly affect fish physiology, increasing energy demand, which can impact homeostasis and survival. Endocrine and metabolic changes and enzymatic modulation are referred to as stress
Ana Paula Nascimento Corrêa   +8 more
wiley   +2 more sources

3D spheroid culturing of Astyanax mexicanus liver-derived cell lines recapitulates distinct transcriptomic and metabolic states of in vivo tissue environment. [PDF]

open access: yesJ Exp Zool B Mol Dev Evol
In vitro assays are crucial tools for gaining detailed insights into various biological processes, including metabolism. Cave morphs of the river-dwelling fish species, Astyanax mexicanus, have adapted their metabolism allowing them to thrive in the ...
Tathagata Biswas   +5 more
semanticscholar   +2 more sources

Phylogeographic relationships and morphological evolution between cave and surface Astyanax mexicanus populations (De Filippi 1853) (Actinopterygii, Characidae)

open access: yesMolecular Ecology, 2023
The Astyanax mexicanus complex includes two different morphs, a surface‐ and a cave‐adapted ecotype, found at three mountain ranges in Northeastern Mexico: Sierra de El Abra, Sierra de Guatemala and Sierra de la Colmena (Micos).
M. Garduño‐Sánchez   +10 more
semanticscholar   +1 more source

A new cave population of Astyanax mexicanus from Northern Sierra de El Abra, Tamaulipas, Mexico

open access: yesSubterranean Biology, 2023
The Astyanax genus represents an extraordinary example of phenotypic evolution, being their most extreme examples the blind and depigmented morphs, which have evolved from independent surface-dwelling lineages.
R. Miranda-Gamboa   +6 more
semanticscholar   +1 more source

The Mexican Tetra, Astyanax mexicanus, as a Model System in Cell and Developmental Biology.

open access: yesAnnual Review of Cell and Developmental Biology, 2023
Our understanding of cell and developmental biology has been greatly aided by a focus on a small number of model organisms. However, we are now in an era where techniques to investigate gene function can be applied across phyla, allowing scientists to ...
P. Perera   +2 more
semanticscholar   +1 more source

Molecular characterization of Astyanax species (Characiformes: Characidae) from the upper Paraguaçu River basin, a hydrographic system with high endemism

open access: yesNeotropical Ichthyology, 2023
Molecular tools have been employed to improve the knowledge about freshwater Neotropical fishes. Such approaches supporting studies of groups including species complexes such as Astyanax, one of the most diversified and taxonomically complex genus of the
Rosane Silva-Santos   +5 more
semanticscholar   +1 more source

3D spheroid culturing of Astyanax mexicanus liver-derived cell lines recapitulates distinct transcriptomic and metabolic states of in vivo tissue environment

open access: yesbioRxiv, 2023
In vitro assays are crucial tools for gaining detailed insights into various biological processes, including metabolism. Cave morphs of the river-dwelling fish species, Astyanax mexicanus, have adapted their metabolism allowing them to thrive in the ...
T. Biswas   +4 more
semanticscholar   +1 more source

Revealing the Satellite DNA History in Psalidodon and Astyanax Characid Fish by Comparative Satellitomics

open access: yesFrontiers in Genetics, 2022
Eukaryotic genomes are usually enriched in repetitive DNA sequences, which can be classified as dispersed or tandemly repeated elements. Satellite DNAs are noncoding monomeric sequences organized in a head-to-tail fashion that are generally located on ...
C. A. G. Goes   +8 more
semanticscholar   +1 more source

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