Fish
Physical mapping of 18S and 5S rDNA loci and histone H3 gene in grasshopper species of the subfamily Gomphocerinae (Acrididae)
Authors: L.C. Silva-Neto, A.C.S. Bernardino, V. Loreto and R.C. Moura
In this study, fluorescence in situ hybridization (FISH) analysis was used to determine and compare the numbers and chromosomal locations of two multigene families (rDNA and histone H3) in four Neotropical species of gomphocerine grasshoppers. FISH using the 18S rDNA probe identified a single site on the S9 chromosome.. Read More»
- Genet. Mol. Res. 14(4):
- 2015.November.24.8
- DOI:
- 10.4238/2015.November.24.8
Morphology and muscle gene expression in GIFT and Supreme Nile tilapia varieties reared in two cultivation systems
Authors: E.C.S. Lima, J.A. Povh, R.A.A. Otonel, J.H. Leonhardt, A.A. Alfieri, S.A. Headley, F.P. Souza, A.R. Poveda-Parra, P.J. Furlan-Murari, N.M. Lopera-Barrer1
Tissue growth in most fishes occurs by muscular hyperplasia and hypertrophy, which are influenced by different regulatory factors, such as myostatin. The current study evaluated the influence of cultivation in hapas and earthen ponds on the diameter of white muscle fibers and on the myostatin (MSTN-1) gene in GIFT and Supreme .. Read More»
- Genet. Mol. Res. 16(1):
- gmr16019407
- DOI:
- 10.4238/gmr16019407
Karyoevolution of the toadfish Thalassophryne nattereri (Batrachoidiformes: Batrachoididae)
Authors: G.W.W.F. Costa and W.F. Molina
The Batrachoididae includes some venomous brackish and marine fish found in the Atlantic, Indian and Pacific oceans. This family is composed of 69 species, distributed among 19 genera. Species of the genus Thalassophryne have been reported along the coast of Rio Grande do Norte (Brazil); T. nattereri has been responsible for a large number of human injuri.. Read More»
- Genet. Mol. Res. 8(3):
- vol8-3gmr640
- DOI:
- 10.4238/vol8-3gmr640
Chromosomal diversity in Hypostomus (Siluriformes, Loricariidae) with emphasis on physical mapping of 18S and 5S rDNA sites
Authors: J.B. Traldi D.R. Blanco M.R. Vicari J.F. Martinez R.L. Lui A.V. Barros R.F. Artoni O. Moreira-Filho
We examined chromosomes of three species of the genus Hypostomus, in order to contribute to the understanding of the karyotype evolution of this group. Specimens of H. ancistroides and H. nigromaculatus displayed differences in karyotype formulas, distribution and location of heterochromatin and nucleolus organizer regions when compared to other populations .. Read More»
- Genet. Mol. Res. 12(1):
- 2013.February.8.11
- DOI:
- 10.4238/2013.February.8.11
Molecular taxonomy and evolutionary hypothesis concerning Astyanax fasciatus (Characiformes, Characidae) from Vila Velha State Park and Tibagi and Igua�§u Rivers
Authors: D.A. Matoso M. da Silva R.F. Artoni R.A. Torres
A species complex hypothesis involving Astyanax fasciatus from southern Brazil was tested using 12S mtDNA sequences. Phylogenetic inferences were performed with maximum likelihood, maximum parsimony and Bayesian as phylogenetic methods and Hemigrammus bleheri as the outgroup. Besides 11 sequences from A. fasciatus, the data set was comprised of other part.. Read More»
- Genet. Mol. Res. 12(1):
- 2013.March.7.1
- DOI:
- 10.4238/2013.March.7.1
RNA-binding motif protein RBM22 is required for normal development of zebrafish embryos
Authors: F. He, C.-T. Wang and L.-T. Gou
RBM22 is a newly discovered RNA-binding motif protein, belonging to the SLT11 family; it has been reported to be involved in pre-splicesome assembly and to interact with the Ca2+-signaling protein ALG-2. However, previous studies have not demonstrated whether its expression is essential for early embryogenesis in vertebrates. .. Read More»
- Genet. Mol. Res. 8(4):
- vol8-4gmr683
- DOI:
- 10.4238/vol8-4gmr683
Chromosomal evolution in large pelagic oceanic apex predators, the barracudas (Sphyraenidae, Percomorpha)
Authors: R.X. Soares, M.B. Cioffi, L.A.C. Bertollo, A.T. Borges, G.W.W.F. Costa and W.F. Molina
Sphyraena (barracudas) represents the only genus of the Sphyraenidae family and includes 27 species distributed into the tropical and subtropical oceanic regions. These pelagic predators can reach large sizes and, thus, attracting significant interest from commercial and sport fishing. Evolutionary data for this fish group, as.. Read More»
- Genet. Mol. Res. 16(2):
- gmr16029644
- DOI:
- 10.4238/gmr16029644
Differentiation and evolutionary relationships in Erythrinus erythrinus (Characiformes, Erythrinidae): occurrence and distribution of B chromosomes
Authors: N.F. Martins, M.B. Cioffi, W.P. Troy, J.F. Martinez, O. Moreira-Filho and L.A.C. Bertollo
Erythrinus erythrinus, a Neotropical fish species of the Erythrinidae family, has a wide distribution in South America. Previous cytogenetic analysis showed that this species presents extensive karyotype diversity, with 4 karyomorphs (A-D) described herein. This study investigated the karyotypic structure of 2 new pop.. Read More»
- Genet. Mol. Res. 13(3):
- 2014.February.14.11
- DOI:
- 10.4238/2014.February.14.11
Isolation and characterization of polymorphic microsatellite markers in Bagarius yarrelli using RNA-Seq
Authors: M. Du, Y.H. Liu and B.Z. Niu
The yellow sisorid catfish (Bagarius yarrelli) is a vulnerable fish species. In this study, seven polymorphic microsatellite DNA markers for yellow sisorid catfish were described, using RNA-Seq methodology. In B. yarrelli (N = 44) from a Hekou wild population, allelic frequency, and observed and expected heterozygosities per locus varied from two to six, .. Read More»
- Genet. Mol. Res. 14(4):
- 2015
- DOI:
- 10.4238/2015
B chromosome prevalence and physical mapping of 18S rDNA and H4 histone sites in the grasshopper Xyleus discoideus angulatus (Romaleidae)
Authors: C.B. Machado, L.C. Silva Neto, V. Loreto and M.J. Souza
We sampled 11 natural populations of the grasshopper Xyleus discoideus angulatus in Northeastern Brazil to analyze B chromosome frequency and meiotic behavior. We observed a single large B chromosome, resembling the X chromosome, in 29 of the 402 specimens. Eight of the 11 populations had B chromosomes, with a rather .. Read More»
- Genet. Mol. Res. 13(3):
- 2014.March.26.4
- DOI:
- 10.4238/2014.March.26.4