Results 1 to 10 of about 3,034 (104)

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 [PDF]

open access: yesComparative 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   +3 more
doaj   +3 more sources

Dieta de Astyanax asuncionensis (Characiformes, Characidae), em riachos da bacia do rio Cuiabá, Estado do Mato Grosso - DOI: 10.4025/actascibiolsci.v30i1.1442

open access: yesActa Scientiarum: Biological Sciences, 2008
A dieta de Astyanax asuncionensis, em riachos da bacia do rio Cuiabá, Estado do Mato Grosso, durante períodos de chuva e seca, foi descrita, sendo suas variações associadas ao grau de integridade da vegetação ciliar.
Cristiana da Silva Borba   +3 more
doaj   +5 more sources

High rDNA polymorphisms in Astyanax lacustris (Characiformes: Characidae): new insights about the cryptic diversity in A. bimaculatus species complex with emphasis on the Paraná River basin

open access: yesNeotropical Ichthyology, 2022
This study aimed to identify species of Astyanax bimaculatus group from four Itaipu Reservoir tributaries (Paraná River Basin) by cytogenetics and molecular markers (COI) to investigate the possible occurrence of cryptic diversity in part of this basin ...
Sandro Tonello   +9 more
doaj   +6 more sources

Karyotypic diversity among three species of the genus Astyanax (Characiformes: Characidae)

open access: yesBrazilian Journal of Biology, 2016
The group Incertae sedis within the Characidae family currently includes 88 genera, previously included in the subfamily Tetragonopterinae. Among them is the genus Astyanax comprising a group of species with similar morphology and widely distributed in ...
P. B. Nishiyama   +5 more
doaj   +2 more sources

Fish from urban tributaries to the Vermelho River, upper Paraguay River Basin, Mato Grosso, Brazil [PDF]

open access: yesCheck List, 2014
The fish fauna of urban streams is still poorly known, it difficult to assess the effects of urbanization expansion on fish species composition, for this reason the aim of this study was to provide a checklist of species that compose the ichthyofauna of ...
Valdeci Oliveira   +3 more
doaj   +4 more sources

Diversidade cariotípica de "Astyanax asuncionensis" (Teleostei, Characiformes) na microbacia do rio Sepotuba (Alto Paraguai). DOI: 10.7902/ecb.v3i2.9

open access: yesEvolução e Conservação da Biodiversidade, 2013
<p>Este trabalho teve por objetivo utilizar ferramentas da citogen&eacute;tica para estudar <em>A. asunsionensis </em>na microbacia do Sepotuba. Os esp&eacute;cimes foram coletados, nos c&oacute;rregos S&atilde;o Jos&eacute; e Bocaiuval e no Rio Sepotuba, na regi&atilde;o de Tangar&aacute; da Serra & ...
Patrícia Giongo   +5 more
openaire   +2 more sources

Fatores abióticos que afetam a distribuição do gênero Astyanax Baird & Girard, 1854 em riachos de cabeceiras de Chapada dos Guimarães, bacia do rio Cuiabá, Mato Grosso [PDF]

open access: yesBioscience Journal, 2011
Os principais fatores que influenciam a distribuição de uma espécie estão relacionados principalmente com a capacidade de dispersão, o comportamento, a presença de outras espécies e aos fatores físico-químicos.
Mahmoud Mehanna, Jerry Penha
doaj   +4 more sources

Highlighting Astyanax Species Diversity through DNA Barcoding [PDF]

open access: yesPLoS ONE, 2016
Bruno Cesar Rossini   +2 more
exaly   +2 more sources

Redescription of Astyanax erythropterus (Holmberg, 1891) (Teleostei: Characiformes: Characidae) from La Plata basin in Argentina [PDF]

open access: yes, 2010
Astyanax erythropterus (Holmberg, 1891) originally described on the basis of one juvenile, is redescribed herein based on juveniles and adults from the type-localiy.
Almirón, Adriana E.   +4 more
core   +7 more sources

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