Buscar
Mostrando ítems 1-10 de 86
Genetic differentiation among distinct karyomorphs of the wolf fish Hoplias malabaricus species complex (Characiformes, Erythrinidae) and report of unusual hybridization with natural triploidy
(Wiley-Blackwell, 2014-11-01)
In this study, genetic differentiation between karyomorphs A (2n=42) and D (2n=39/40) of the wolf fish Hoplias malabaricus, which is comprised of several cryptic species that present a wide variety of diploid chromosome ...
Three sympatric karyomorphs in the fish Astyanax fasciatus (Teleostei, Characidae) do not seem to hybridize in natural populations
(Zoological Inst, 2012-01-01)
Ninety individuals of the characid fish Astyanax fasciatus (Cuvier, 1819) were collected at Agua da Madalena stream (Botucatu, São Paulo, Brazil) and analyzed for diploid chromosome number 2n and karyotype composition as ...
Three sympatric karyomorphs in the fish Astyanax fasciatus (Teleostei, Characidae) do not seem to hybridize in natural populations
(Zoological Inst, 2012-01-01)
Ninety individuals of the characid fish Astyanax fasciatus (Cuvier, 1819) were collected at Agua da Madalena stream (Botucatu, São Paulo, Brazil) and analyzed for diploid chromosome number 2n and karyotype composition as ...
Three sympatric karyomorphs in the fish Astyanax fasciatus (Teleostei, Characidae) do not seem to hybridize in natural populations
(2012-01-01)
Ninety individuals of the characid fish Astyanax fasciatus (Cuvier, 1819) were collected at Água da Madalena stream (Botucatu, São Paulo, Brazil) and analyzed for diploid chromosome number 2n and karyotype composition as ...
Chromosome spreading of associated transposable elements and ribosomal DNA in the fish Erythrinus erythrinus. Implications for genome change and karyoevolution in fish
(Biomed Central Ltd., 2010-09-06)
Background: The fish, Erythrinus erythrinus, shows an interpopulation diversity, with four karyomorphs differing by chromosomal number, chromosomal morphology and heteromorphic sex chromosomes. Karyomorph A has a diploid ...
Chromosome spreading of associated transposable elements and ribosomal DNA in the fish Erythrinus erythrinus. Implications for genome change and karyoevolution in fish
(Biomed Central Ltd., 2010-09-06)
Background: The fish, Erythrinus erythrinus, shows an interpopulation diversity, with four karyomorphs differing by chromosomal number, chromosomal morphology and heteromorphic sex chromosomes. Karyomorph A has a diploid ...
Marcadores cromossômicos em Hoplias malabaricus (Characiformes, Erythrinidae). Citogenética comparativa entre cariomorfos
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Genética Evolutiva e Biologia Molecular - PPGGEv, 2010-02-08)
Hoplias malabaricus, a widespread Erythrinidae fish, is characterized by a karyotypic diversity, with seven karyomorphs already described. This report presented a comparative study of the karyomorphs A, B, C and D, which ...
Evolução cromossômica na família Erythrinidae. Mapeamento citogenético de DNAs repetitivos e microdissecção de cromossomos sexuais
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Genética Evolutiva e Biologia Molecular - PPGGEv, 2011-12-19)
The fishes from the Erythrinidae family present a wide karyotypic variation with several karyomorphs already identified for some species, including the presence of different sex chromosome systems. In Erythrinus erythrinus ...
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae)
(Sociedade Brasileira de Zoologia, 2012-04-01)
Individual samples from five populations of the characid fish Astyanax scabripinnis (Jenyns, 1842) from the Tietê and Paranapanema river basins (Brazil) were studied. All individuals analyzed presented 50 chromosomes but ...
A comparative structural cytogenetic study in three allopatric populations of Astyanax scabripinnis (Teleostei: Characidae)
(Sociedade Brasileira de Zoologia, 2012-04-01)
Individual samples from five populations of the characid fish Astyanax scabripinnis (Jenyns, 1842) from the Tietê and Paranapanema river basins (Brazil) were studied. All individuals analyzed presented 50 chromosomes but ...