Journal Article
Trends in karyotype evolution in Astyanax (Teleostei, Characiformes, Characidae): Insights from molecular data.
Pazza, R., Dergam, J.A. and Kavalco, K.F.
Record Number:
3914
Year:
2018
Journal:
Frintiers in Genetics
Volume:
9:131.
Notes:
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Abstract:
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.
Keywords: cytotaxonomy, molecular evolution, chromosomal rearrangements, mtDNA, chromosomal
symplesiomorphy, chromosomal synapomorphy, chromosomal autapomorphy
Times Cited:
2