Results 11 to 20 of about 76 (55)
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 +5 more sources
Chromosomal organization of retrotransposon Rex1 in Astyanax species (Characiformes, Characidae)
The cytogenetic studies of retrotranposons Rex have been characterized in several fish groups, including species of the Astyanax genus. This group presents an extensive variability in their karyotype, with diploid numbers of 2n = 52, 50, 48, 46 and 36 ...
Silva, Edson L. da [UNESP] +13 more
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[[Astyanax Baird & Girard]] The genus Astyanax Baird & Girard includes more than 100 nominal species (Garutti & Britski, 2000) distributed from southern United States to the Río Negro in Argentina (Almirón et al., 1997).
M. D. L. M. Azpelicueta +2 more
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Diversidade em seqüências da região controle do DNA mitocondrial de populações de Astyanax da Bacia do Alto Rio Paraná [PDF]
A fish species considered typical of the Upper Paraná River basin is the species Astyanax altiparanae Garutti e Britski, 2000, previously known as Astyanax bimaculatus.
Soria, Thatiana Vanessa
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Repetitive sequences and their chromosomal locations have been widely studied in species of the Astyanax genus. However, the chromosomal organization of U2 snDNA remains largely unknown.
Parise-Maltempi, Patricia Pasquali [UNESP] +4 more
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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.
Cristina da Silva Borba +3 more
doaj
The Astyanax genus is widely distributed from southern United States to northern Patagonia, Argentina. While cytogenetic studies have been performed for this genus, but little is known about the histone gene families. The aim of this study was to examine
Parise-Maltempi, Patricia Pasquali [UNESP] +4 more
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O gênero Astyanax atualmente é visto como um grupo com incertezas filogenéticas, configurando-se até o presente momento como polifilético dentro da família Characidae.
Piscor, Diovani
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Astyanax erythropterus (Holmberg, 1891) Figs. 1-4 Diagnosis. Astyanax erythropterus is distinguished from all species of the genus, except A. pelegrini, by the presence of a long anal fin bearing 38 to 42 branched rays (vs.
Almirón, Adriana +4 more
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differs between divergent habitats in the Pantanal wetlands
This study investigated whether the body morphology of the tetra fish Astyanax lacustris ( previously Astyanax asuncionensis) varied between populations inhabiting one lagoon ( a lentic, shallow environment, with great habitat complexity created by ...
L. E. R. Tavares +7 more
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