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Contribuição citogenética à análise da biodiversidade em Astyanax fasciatus (Pisces, Characidae).
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Genética Evolutiva e Biologia Molecular - PPGGEv, 2005-03-10)
Astyanax fasciatus is characterized as a cytogenetically diverse species. Sympatric and
syntopic occurrence of distinct cytotypes corroborates the hypothesis that A. fasciatus might
represent a species complex sharing a ...
Sympatric occurrence of two cytotypes of Astyanax scabripinnis (Characiformes, Characidae)
(Sociedade Brasileira de Genética, 2000-06-01)
Foram analisados citogeneticamente quatro exemplares de Astyanax scabripinnis coletados simpatricamente no ribeirão Tamanduá (Estado de São Paulo, Brasil). Três deles, denominados de citótipo I, apresentaram 2n = 50 ...
Cryptic Caribbean species of Scorpaena (Actinopterygii: Scorpaeniformes) suggested by cytogenetic and molecular data
(Wiley-Blackwell, 2016-10-01)
Cytogenetic and molecular analyses enabled identification of two cytotypes among individuals of the spotted scorpion fish Scorpaena plumieri from Margarita Island, Venezuela. Cytotype 1 was characterized by 48 subtelo-acrocentric ...
Cytogeographic Analysis of Southern South American Species of Stemodia (Scrophulariaceae)
(Finnish Zoological Botanical Publishing Board, 2009-10)
Chromosome numbers for 52 populations representing eight South American spe¬cies of Stemodia (Scrophulariaceae) were determined. The numbers 2n = 22 found in S. hassleriana and S. palustris, and 2n - 44 in S. lobelioides ...
Cytogeographie analysis of southern South American species of Stemodia (Scrophulariaceae)
(Finnish Zoological Botanical Publishing Board, 2009-12)
Chromosome numbers for 52 populations representing eight South American species of Stemodia (Scrophulariaceae) were determined. The numbers 2n = 22 found in S. hassleriana and S. palustris, and 2n = 44 in S. lobelioides ...
Sympatric occurrence of two cytotypes of Astyanax scabripinnis (Characiformes, Characidae)
(Sociedade Brasileira de Genética, 2014)
Sympatric occurrence of two cytotypes of Astyanax scabripinnis (Characiformes, Characidae)
(Sociedade Brasileira de Genética, 2000-06-01)
Foram analisados citogeneticamente quatro exemplares de Astyanax scabripinnis coletados simpatricamente no ribeirão Tamanduá (Estado de São Paulo, Brasil). Três deles, denominados de citótipo I, apresentaram 2n = 50 ...
Cytotaxonomy and geographic distribution of cytotypes of species of the South American genus Chrysolaena (Vernonieae, Asteraceae)
(Wiley-liss, Inc, 2019-09)
Understanding speciation and biodiversity patterns in plants requires knowledge of the general role of climate in allowing polyploids to escape competition and persist with their diploid progenitors. This is a particularly ...
Astyanax hastatus Myers, 1928 (Teleostei, Characidae): a new species complex within the genus Astyanax?
(Sociedade Brasileira de Genética, 2009)
Four populations of Astyanax hastatus Myers 1928 from the Guapimirim River basin (Rio de Janeiro State) were analyzed and three distinct cytotypes identified. These cytotypes presented 2n = 50 chromosomes, with 4M+8SM+10ST+28A ...
KARYOTYPE and NUCLEOLUS ORGANIZER REGIONS of Ophisternon aenigmaticum (Teleostei: Synbranchiformes: Synbranchidae) FROM VENEZUELA
(Interciencia, 2011-03-01)
The first cytogenetic analysis by conventional Giemsa staining silver nitrate impregnation of nucleolus organizer regions (Ag-NOR), and fluorescence in situ hybridization (FISH) carried out on Ophisternon aenigmaticum from ...