37 documents found, page 1 of 4

Isolation and characterization of microsatellite loci in the Neotropical fish A...

Made available in DSpace on 2022-04-28T18:58:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-01-01; Departamento de Ciências Biolôgicas Universidade Estadual Paulista Júlio de Mesquita Filho SP; Departamento de Ciências Biolôgicas Universidade Estadual Paulista Júlio de Mesquita Filho SP

Karyotype and nucleolus organizer regions of ophisternon aenigmaticum (teleoste...

Made available in DSpace on 2022-04-29T08:48:25Z (GMT). No. of bitstreams: 0 Previous issue date: 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 Margarita Island, Venezuela, is reported. Two cytotypes were found: cytotype C1,...

Chromosome Studies in Hypoptopomatinae (Pisces, Siluriformes, Loricariidae): L....

Made available in DSpace on 2022-04-29T08:41:45Z (GMT). No. of bitstreams: 0 Previous issue date: 1992-01-01; The cytogenetic analysis of 13 specimens (9 males and 4 females) of Pseudotocinclus tietensis showed that this species has 2n=54 chromosomes (26M+20SM+6ST) plus one heteromorphic pair (SM/M) in the males and one homomorphic pair (SM/SM) in the females. Ag-NORs are located interstitially on the long arm ...

Whole chromosome painting of B chromosomes of the red-eye tetra Moenkhausia san...

Made available in DSpace on 2022-04-29T07:32:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-01-01; B chromosomes are dispensable genomic elements found in different groups of animals and plants. In the present study, a whole chromosome probe was generated from a specific heterochromatic B chromosome occurring in cells of the characidae fish Moenkhausia sanctaefilomenae (Steindachner, 1907). The chrom...

A new miniature species of Priocharax (Characiformes: Characidae) from the uppe...

DNA metabarcoding of Neotropical ichthyoplankton: Enabling high accuracy with l...

Made available in DSpace on 2021-06-25T10:10:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-09-05; Knowledge of ichthyoplankton dynamics is extremely important for conservation management as it can provide information about preferential spawning sites, reproductive period, migratory routes and recruitment success, which can be used to guide management and conservation efforts. However, identification...

Evolutionary history of Heptapteridae catfishes using ultraconserved elements (...

Global phylogeography of sailfish: deep evolutionary lineages with implications...

Since the Miocene profound climatic changes have influenced the biology and ecology of species worldwide, such as their connectivity, genetic population structure, and biogeography. The goal herein is to evaluate the phylogeography of sailfish Istiophorus platypterus between the Atlantic, Indian, and Pacific oceans. Our results evidenced a high genetic diversity and three distinct populations among the ocean ba...

Global phylogeography of the smooth hammerhead shark: glacial refugia and histo...

Extreme climate changes during the Cenozoic Era strengthened different biogeographical barriers that decreased the connectivity among populations, triggering lineage diversification of different species worldwide. The mitochondrial DNA control region was employed to explore the phylogeography of Sphyrna zygaena, a globally distributed species threatened by unsustainable, illegal, unreported and unregulated fish...

A new miniature species of Priocharax (Teleostei: Characiformes: Characidae) fr...