Trends in Karyotype Evolution in Astyanax (Teleostei, Characiformes, Characidae): Insights From Molecular Data.

Autor: Pazza R; Laboratory of Ecological and Evolutionary Genetics, Institute of Biological and Health Sciences, Federal University of Viçosa, Rio Paranaíba, Brazil., Dergam JA; Laboratory of Molecular Systematics 'Beagle', Department of Animal Biology, Federal University of Viçosa, Viçosa, Brazil., Kavalco KF; Laboratory of Ecological and Evolutionary Genetics, Institute of Biological and Health Sciences, Federal University of Viçosa, Rio Paranaíba, Brazil.
Jazyk: angličtina
Zdroj: Frontiers in genetics [Front Genet] 2018 Apr 16; Vol. 9, pp. 131. Date of Electronic Publication: 2018 Apr 16 (Print Publication: 2018).
DOI: 10.3389/fgene.2018.00131
Abstrakt: The study of patterns and evolutionary processes in neotropical fish is not always an easy task due the wide distribution of major fish groups in large and extensive river basins. Thus, it is not always possible to detect or correlate possible effects of chromosome rearrangements in the evolution of biodiversity. In the Astyanax genus, chromosome data obtained since the 1970s have shown evidence of cryptic species, karyotypic plasticity, supernumerary chromosomes, triploidies, and minor chromosomal rearrangements. In the present work, we map and discuss the main chromosomal events compatible with the molecular evolution of the genus Astyanax (Characiformes, Characidae) using mitochondrial DNA sequence data, in the search for major chromosome evolutionary trends within this taxon.
Databáze: MEDLINE