Results 1 to 10 of about 12,679 (227)

A phylogenomic perspective on the radiation of ray-finned fishes based upon targeted sequencing of ultraconserved elements [PDF]

open access: yes, 2012
Ray-finned fishes constitute the dominant radiation of vertebrates with over 30,000 species. Although molecular phylogenetics has begun to disentangle major evolutionary relationships within this vast section of the Tree of Life, there is no widely ...
Alfaro, Michael E.   +3 more
core   +7 more sources

Female mating preferences in blind cave tetras Astyanax fasciatus (Characidae, Teleostei). [PDF]

open access: yes, 2006
The Mexican tetra Astyanax fasciatus has evolved a variety of more or less color- and eyeless cave populations. Here we examined the evolution of the female preference for large male body size within different populations of this species, either surface-
Plath, Martin   +4 more
core   +1 more source

Population structure of two Astyanax Baird & Girard, 1854 (Teleostei, Characidae) species from upper Paraguaçu river

open access: yesBrazilian Archives of Biology and Technology, 2008
The fishes of the family Characidae are among the main species of fresh water fishes in South America. In this work, some aspects of the population structure of two Astyanax species were assessed.
Alexandre Clistenes de Alcântara Santos   +1 more
doaj   +1 more source

Identification of Astyanax altiparanae (Teleostei, Characidae) in the Iguaçu River, Brazil, based on mitochondrial DNA and RAPD markers

open access: yesGenetics and Molecular Biology, 2002
Astyanax fishes are among the most important food-web components of South America rivers. In the Iguaçu River basin, the Astyanax genus is represented mainly by endemic species.
Prioli Sônia M.A.P.   +7 more
doaj   +3 more sources

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

open access: yes, 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   +2 more
core   +1 more source

Astyanax taurorum a new species from dos Touros River, Pelotas River drainage, an upland southern Brazilian river (Characiformes: Characidae)

open access: yesZoologia (Curitiba), 2017
A new species of Astyanax belonging to the Astyanax scabripinnis complex is described from dos Touros River, tributary of the Pelotas River, Uruguay River basin. Astyanax taurorum sp. nov.
Carlos Alberto S. de Lucena   +2 more
doaj   +1 more source

Changes in fish populations in the Lower Canyons of the Rio Grande [PDF]

open access: yes, 2014
The Lower Canyons of the Rio Grande suffer from environmental degradation that has negatively impacted native fish populations and their distributions.
Edwards, Robert J., Garrett, Gary P.
core   +1 more source

New small-sized species of Astyanax (Characiformes: Characidae) from the upper rio Paraguai basin, Brazil, with discussion on its generic allocation [PDF]

open access: yesNeotropical Ichthyology, 2022
A new species of Astyanax is described from the rio Salobra, tributary of rio Cuiabá, rio Paraguai basin. The new taxon can be distinguished from its congeners by having a well-defined dark midlateral stripe on body extending from the posterior margin of
Fernando C. P. Dagosta   +1 more
doaj   +1 more source

Attitudes Towards Aeneas in Roman Asia Minor [PDF]

open access: yes, 2017
This paper won a first place writing flag award in the research category. Christopher Layden, writing for Adam Rabinowitz’s UGS 302 class, “Tales of the Trojan War”.Rabinowitz, AdamUndergraduate ...
Layden, Christopher
core   +1 more source

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

open access: yesBrazilian 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   +3 more
doaj   +1 more source

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