
Authors: E.M. Abbas, A. Takayanagi, N. Shimizu and M. Kato
Myostatin is a negative regulator of the growth and development of skeletal muscle mass. In fish, myostatin is expressed in several organs in addition to skeletal muscle. To understand the mechanisms regulating myostatin gene expression in the sea perch, Lateolabrax japonicus, we examined the methylation status of the myostatin gene promoter region in sev.. Read More»
Authors: Y.C. Guo, H. Wang and B.L. Zhang
This study proposes use of the DNA genetic artificial fish swarm constant modulus blind equalization algorithm (DNA-G-AFS-CMBEA) to overcome the local convergence of the CMBEA. In this proposed algorithm, after the fusion of the fast convergence of the AFS algorithm and the global search capability of the DNA-G algorithm to dr.. Read More»
Authors: X.N. Luo, M. Yang, X.F. Liang, K. Jin, L.Y. Lv, C.X. Tian, Y.C. Yuan and J. Sun
In this study, 12 polymorphic microsatellites were investigated to determine the genetic diversity and structure of 5 consecutive selected populations of golden mandarin fish (Siniperca scherzeri Steindachner). The total numbers of alleles, average heterozyosity, and average polymorphism information content showed that the genetic diversity of these breed.. Read More»
Authors: M.M. Mendes, R. da Rosa, L. Giuliano-Caetano and A.L. Dias
A large number of genera in the tropical fish family Characidae are incertae sedis. Cytogenetic analysis was made of four of these species: Astyanax eigenmanniorum, Deuterodon stigmaturus, Hyphessobrycon luetkenii, and H. anisitsi, collected from various hydrographic basins: hydrographic system from Laguna dos Patos/RS, Traman.. Read More»
Authors: R.H. Li, S.K. Lu, C.L. Zhang, W.W. Song, C.K. Mu and C.L. Wang
The common Chinese cuttlefish (Sepiella maindroni) is one of the popular edible cephalopod consumed across Asia. To facilitate the population genetic investigation of this species, we developed fourteen polymorphic microsatellite makers from expressed sequence tags of S. maindroni. The number of alleles at ea.. Read More»
Authors: J.S. Batista and J.A. Alves-Gomes
The large pimelodid, Brachyplatystoma rousseauxii, is one of the two most important catfish species for the fisheries in the Amazon. It is captured by commercial and artisanal fishing fleets in at least five Amazonian countries, at fishing grounds more than 5000 km apart. Current evidence suggests a complex life cycle that inc.. Read More»
Authors: W.F. Molina, D.E.O. Alves, W.C. Ara?ºjo, P.A. Martinez, M.F.M. Silva and G.W.W.F. Costa
Inoculation with bacterial or fungal antigens that stimulate cell proliferation has been widely used to obtain metaphases for cytogenetic studies of fish. We evaluated the potential of new pharmaceutical compounds as mitogenic agents in fish, testing the efficacy of Aminovac® (mixed antigens and epsilon-acetamidocaproic ac.. Read More»
Authors: J.R. Tsuda, V.P.O. de Moraes, L. Giuliano-Caetano and A.L. Dias
Five specimens of Rhamdia quelen collected from the Lindóia Stream, PR, Brazil, were cytogenetically analyzed. The diploid chromosome number found was 58, including 30 metacentric, 16 submetacentric, 10 subtelocentric, and 2 acrocentric chromosomes. Supernumerary or B chromosomes, frequently observed in this fish group,.. Read More»
Authors: C.E.S. Zago
The number of species of reptiles has decreased since the time that they ruled the Earth until the present days. Turtles have been little studied, particularly regarding their cytogenetics. The present study investigated, using classical and molecular cytogenetic techniques, the chromosomes of Chelonoidis carbonaria, a terrest.. Read More»
Authors: C.A. Silva, R.C.A. Lima and A.S. Teixeira
The discus is a very popular and expensive aquarium fish belonging to the family Cichlidae, genus Symphysodon, formed by three Amazon basin endemic species: Symphysodon aequifasciatus, S. discus and S. tarzoo. The taxonomic status of these fish is very controversial, with a paucity of molecular research on their population gen.. Read More»