Abstract
Abstract Cytogenetic studies in fish can be used to discuss the evolution and phylogeny of the species, since the chromosomes are the physical basis of the genetic system of an organism. Thus, our objective was to study chromosomally the fish species Brachychalcinus retrospina to enlarge the number of karyotyped species for the Brachychalcinus genus. Specimens of B. retrospina from Angelim River, Nova Olimpia, Mato Grosso State, Brazil, presented 2n = 50 chromosomes: 16 metacentric, 24 submetacentric, six subtelocentric and four acrocentrics. The Nucleolus Organizer Regions (NOR) was detected in one chromosome pair. The results for B. retrospina corroborate those found for other species this subfamily, both in chromosome number and markings of Ag-NORs, indicating some stability chromosomal for this group.
Sign-in/Register to access full text options 
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.
