Results 11 to 20 of about 14,954 (263)

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

Ecol Evol
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 ...
Legendre L, Père S, Rebaudo F, Espinasa L, Attia J, Rétaux S.   +5 more
europepmc   +2 more sources

Characterization of Mitochondrial Genomes and Evolutionary Relationships in Two <i>Moenkhausia</i> (Characiformes: Acestrorhamphidae). [PDF]

Ecol Evol
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.
Sun CH, Chen XD, Zhan YJ, Xu Y, Lu CH.
europepmc   +2 more sources

Astyanax rutilus

, 2010
Autapomorphies of Astyanax cf. rutilus: 1. Separation between posterior dentary teeth (147): (0> 1) more than width of these teeth. Paralleled in node 221 and in Aulixidens eugeniae and Pristella maxillaris. 2. Posterior extent of ventral process of quadrate (151): (0> 1) falling short of posterior margin of symplectic. Paralleled in the Hyphessobrycon
Mirande, Juan Marcos
openalex   +2 more sources

Genetic Mapping of Orofacial Traits Reveals a Single Genomic Region Associated With Differences in Multiple Parameters of Jaw Size Between Astyanax mexicanus Surface and Cavefish. [PDF]

Evol Dev
By performing a genetic association study in cave × surface fish F2 hybrids, we discovered that premaxilla width, dentary length, and maxillary length are all significantly associated with a region on Chromosome 13 containing 109 genes. ABSTRACT The regulation of bone size is a poorly understood and complex developmental process.
Powers AK, Amaismeier A, Thiel K, Anyonge W, McGaugh SE, Boggs TE, Tabin CJ, Gross JB.   +7 more
europepmc   +2 more sources

Temporal Changes in the Fishes of Waller Creek and Invasion of the Variable Platyfish [PDF]

, 2018
This poster was presented at the second Waller Creek Symposium held on the University of Texas campus at the Recreational Sports Center on May 7, 2018.Waller Creek is an entirely urban creek flowing 11km through Austin, Travis County, Texas into Ladybird
Cohen, Adam, Edwards, Robert, Hendrickson, Dean   +2 more
core   +1 more source

Cytotaxonomy, heterochromatic polymorphism and natural triploidy of a species of Astyanax (Pisces, Characidae) endemic to the Iguaçu river basin

Brazilian Archives of Biology and Technology, 2007
Cytogenetic analysis with Astyanax sp. D revealed a karyotype of 2n=50 with 2M+26SM+6ST+16A, besides a triploid specimen showing 2n=75 chromosomes (3M+39SM+9ST+24A). C-banding strongly stained the terminal regions of several SM-ST-A chromossomes.
Daniel Luis Zanella Kantek, Rafael Bueno Noleto, Alberto Sérgio Fenocchio, Marta Margarete Cestari   +3 more
doaj   +1 more source

First record of Astyanax puka Mirande, Aguilera & Azpelicueta, 2007 (Teleostei: Characidae) in Juramento River basin, Salta, Argentina [PDF]

, 2014
Astyanax puka was described from the endorheic Río Salí basin, Argentina, and it was not previously recorded elsewhere, being considered until now as endemic from that basin.
Aguilera, Gaston, Mirande, Juan Marcos, Teran, Guillermo Enrique   +2 more
core   +1 more source

Food resource partitioning among species of Astyanax (Characiformes: Characidae) in the Lower Iguaçu River and tributaries, Brazil [PDF]

Neotropical Ichthyology, 2019
Resource partitioning allows for interspecific coexistence and is frequently reported for similar species. Here, we predicted the existence of resource partitioning among species of Astyanax that co-occur in the Low Iguaçu River and tributaries in Brazil.
Suelen F. R. Pini, Milza C. F. Abelha, Elaine A. L. Kashiwaqui, Rosilene L. Delariva, Sergio Makrakis, Maristela C. Makrakis   +5 more
doaj   +1 more source

A redescription of Astyanax gymnodontus (Eigenmann, 1911), new combination, a polymorphic characid fish from the rio Iguaçu basin, Brazil

Neotropical Ichthyology
Astyanax gymnodontus (Eigenmann, 1911), new combination, a polymorphic characid fish endemic to the Rio Iguaçu basin in Southern Brazil, is redescribed.
Carla Simone Pavanelli, Carlos Alexandre Miranda Oliveira   +1 more
doaj   +1 more source

Basic cytogenetics and physical mapping of ribosomal genes in four Astyanax species (Characiformes, Characidae) collected in Middle Paraná River, Iguassu National Park: considerations on taxonomy and systematics of the genus

Comparative Cytogenetics, 2015
Karyotypes and chromosomal characteristics of both minor and major rDNAs in four fish species known popularly as “lambaris”, namely Astyanax abramis (Jenyns, 1842), Astyanax asuncionensis Géry, 1972, Astyanax correntinus (Holmberg, 1891) and Astyanax sp.
Leonardo Paiz, Lucas Baumgärtner, Weferson Júnio da Graça, Vladimir Margarido   +3 more
doaj   +1 more source