Abstract
There are evidences that Bryconamericus aff. iheringii represents a species complex. DNA molecular markers have been effective in studies on phylogeny, taxon...
Highlights
One of the major groups of freshwater fish worldwide is formed by representatives of the Characiformes order (NELSON, 2006)
The proportion of bases found in this sequence was A= 0.2910; C= 0.2857; G= 0.1074; T= 0.3159, with the transition/transversion rate ratios (Ti/Tv) of 4.099, the estimate of global genetic differentiation (Nst) equal to 6, with rate of invariant nucleotides (I) of 0.6693
Based on the characteristics found in the sequences studied, the evolutionary model that best applies to explain the genetic model was the Tamura Nei plus I (TrN+I) model
Summary
One of the major groups of freshwater fish worldwide is formed by representatives of the Characiformes order (NELSON, 2006). Genetic and cytogenetic studies have confirmed the hypothesis shared by systematists that it is a nonmonophyletic group (SAITOH et al, 2003). Characiformes, has been divided into subfamilies by different authors, due to the large number of species and the similarities among groups of genera. The species with poorly known evolutionary relationships were considered Incertae sedis, including Bryconamericus genus (LIMA et al, 2005). The taxon B. iheringii is described as having its typelocality in São Lourenço City (Rio Grande do Sul State - Brazil), the species that occur in the Paraná river is probably new to science, so that it would be more appropriate to call them as B. aff. The taxon B. iheringii is described as having its typelocality in São Lourenço City (Rio Grande do Sul State - Brazil), the species that occur in the Paraná river is probably new to science, so that it would be more appropriate to call them as B. aff. iheringii (GRAÇA; PAVANELLI, 2007)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
