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Chromosomal stasis in distinct families of marine Percomorpharia from South Atlantic
(2017-01-01)
The weakness of physical barriers in the marine environment and the dispersal potential of fish populations have been invoked as explanations of the apparent karyotype stasis of marine Percomorpha, but several taxa remain ...
Chromosomal stasis in distinct families of marine Percomorpharia from South Atlantic
(2017-01-01)
The weakness of physical barriers in the marine environment and the dispersal potential of fish populations have been invoked as explanations of the apparent karyotype stasis of marine Percomorpha, but several taxa remain ...
Chromosomal evolution of neotropical cichlids: The role of repetitive DNA sequences in the organization and structure of karyotype
(2013-01-01)
Cichlids are important in the aquaculture and ornamental fish trade and are considered models for evolutionary biology. However, most studies of cichlids have investigated African species, and the South American cichlids ...
Molecular cytogenetics characterization of Rhinoclemmys punctularia (Testudines, Geoemydidae) and description of a Gypsy-H3 association in its genome
(Elsevier B.V., 2020-05-15)
The wide variation found in the size of eukaryotic genomes is largely related to the accumulation of repetitive sequences. Studies show that these sequences can go through an evolutionary process (molecular co-optation) ...
Highest Diploid Number Among Gymnotiformes: First Cytogenetic Insights into Rhabdolichops (Sternopygidae)
(Mary Ann Liebert, Inc, 2017-06-01)
We report the first comparative cytogenetic analysis of two species from electrogenic fish of genus Rhabdo-lichops (Sternopygidae, Gymnotiformes): Rhabdolichops troscheli and Rhabdolichops cf eastwardi. R. troscheli has ...
Comparative chromosome mapping of 5S rDNA and 5SHindIII repetitive sequences in Erythrinidae fishes (Characiformes) with emphasis on the Hoplias malabaricus 'species complex'
(Karger, 2007-01-01)
Chromosomal localization of 5S rDNA and 5SHindIII repetitive sequences was carried out in several representatives of the Erythrinidae family, namely in karyomorphs A, D, and F of Hoplias malabaricus, and in H. lacerdae, ...
Mapping of the Retrotransposable Elements Rex1 and Rex3 in Chromosomes of Eigenmannia (Teleostei, Gymnotiformes, Sternopygidae)
(2015-12-01)
Transposable elements constitute a remarkable fraction of the eukaryote genome and show particular capacity to move and insert in specific regions of the genome. This study identified the retrotransposable elements Rex1 ...
Karyotypic Evolution and Chromosomal Organization of Repetitive DNA Sequences in Species of Panaque, Panaqolus, and Scobinancistrus (Siluriformes and Loricariidae) from the Amazon Basin
(Mary Ann Liebert, Inc, 2017-06-01)
Loricariidae family comprises the greatest variability of Neotropical catfish species, with more than 800 valid species. This family shows significant chromosomal diversity. Mapping of repetitive DNA sequences can be very ...
Repetitive DNA mapping on Oligosarcus acutirostris (Teleostei, Characidae) from the Paraíba do Sul River Basin in southeastern Brazil
(2021-01-01)
Within the Neotropical region, the genus Oligosarcus represents an interest-ing assembly of small-sized freshwater predators. The goal of this study was to cytoge-netically analyze Oligosarcus acutirostris from the Espírito ...
Repetitive DNA sequences and evolution of ZZ/ZW sex chromosomes in characidium (teleostei: characiformes)
(Public Library Science, 2015)
Characidium constitutes an interesting model for cytogenetic studies, since a large degree of karyotype variation has been detected in this group, like the presence/absence of sex and supernumerary chromosomes and variable ...