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A Molecular Perspective on Systematics, Taxonomy and Classification Amazonian Discus Fishes of the Genus Symphysodon
Joint Authors
Hrbek, Tomas
Farias, Izeni P.
Amado, Manuella Villar
Source
International Journal of Evolutionary Biology
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-07-28
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
With the goal of contributing to the taxonomy and systematics of the Neotropical cichlid fishes of the genus Symphysodon, we analyzed 336 individuals from 24 localities throughout the entire distributional range of the genus.
We analyzed variation at 13 nuclear microsatellite markers, and subjected the data to Bayesian analysis of genetic structure.
The results indicate that Symphysodon is composed of four genetic groups: group PURPLE—phenotype Heckel and abacaxi; group GREEN—phenotype green; group RED—phenotype blue and brown; and group PINK—populations of Xingú and Cametá.
Although the phenotypes blue and brown are predominantly biological group RED, they also have substantial contributions from other biological groups, and the patterns of admixture of the two phenotypes are different.
The two phenotypes are further characterized by distinct and divergent mtDNA haplotype groups, and show differences in mean habitat use measured as pH and conductivity.
Differences in mean habitat use is also observed between most other biological groups.
We therefore conclude that Symphysodon comprises five evolutionary significant units: Symphysodon discus (Heckel and abacaxi phenotypes), S.
aequifasciatus (brown phenotype), S.
tarzoo (green phenotype), Symphysodon sp.
1 (blue phenotype) and Symphysodon sp.
2 (Xingú group).
American Psychological Association (APA)
Amado, Manuella Villar& Farias, Izeni P.& Hrbek, Tomas. 2011. A Molecular Perspective on Systematics, Taxonomy and Classification Amazonian Discus Fishes of the Genus Symphysodon. International Journal of Evolutionary Biology،Vol. 2011, no. 2011, pp.1-16.
https://search.emarefa.net/detail/BIM-465824
Modern Language Association (MLA)
Amado, Manuella Villar…[et al.]. A Molecular Perspective on Systematics, Taxonomy and Classification Amazonian Discus Fishes of the Genus Symphysodon. International Journal of Evolutionary Biology No. 2011 (2011), pp.1-16.
https://search.emarefa.net/detail/BIM-465824
American Medical Association (AMA)
Amado, Manuella Villar& Farias, Izeni P.& Hrbek, Tomas. A Molecular Perspective on Systematics, Taxonomy and Classification Amazonian Discus Fishes of the Genus Symphysodon. International Journal of Evolutionary Biology. 2011. Vol. 2011, no. 2011, pp.1-16.
https://search.emarefa.net/detail/BIM-465824
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-465824