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Extensive Introgression among Ancestral mtDNA Lineages : Phylogenetic Relationships of the Utaka within the Lake Malawi Cichlid Flock
Joint Authors
Anseeuw, Dieter
Verheyen, Erik
Busselen, Paul
Snoeks, Jos
Nevado, Bruno
Source
International Journal of Evolutionary Biology
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-10
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
We present a comprehensive phylogenetic analysis of the Utaka, an informal taxonomic group of cichlid species from Lake Malawi.
We analyse both nuclear and mtDNA data from five Utaka species representing two (Copadichromis and Mchenga) of the three genera within Utaka.
Within three of the five analysed species we find two very divergent mtDNA lineages.
These lineages are widespread and occur sympatrically in conspecific individuals in different areas throughout the lake.
In a broader taxonomic context including representatives of the main groups within the Lake Malawi cichlid fauna, we find that one of these lineages clusters within the non-Mbuna mtDNA clade, while the other forms a separate clade stemming from the base of the Malawian cichlid radiation.
This second mtDNA lineage was only found in Utaka individuals, mostly within Copadichromis sp.
“virginalis kajose” specimens.
The nuclear genes analysed, on the other hand, did not show traces of divergence within each species.
We suggest that the discrepancy between the mtDNA and the nuclear DNA signatures is best explained by a past hybridisation event by which the mtDNA of another species introgressed into the ancestral Copadichromis sp.
“virginalis kajose” gene pool.
American Psychological Association (APA)
Anseeuw, Dieter& Nevado, Bruno& Busselen, Paul& Snoeks, Jos& Verheyen, Erik. 2012. Extensive Introgression among Ancestral mtDNA Lineages : Phylogenetic Relationships of the Utaka within the Lake Malawi Cichlid Flock. International Journal of Evolutionary Biology،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-504583
Modern Language Association (MLA)
Anseeuw, Dieter…[et al.]. Extensive Introgression among Ancestral mtDNA Lineages : Phylogenetic Relationships of the Utaka within the Lake Malawi Cichlid Flock. International Journal of Evolutionary Biology No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-504583
American Medical Association (AMA)
Anseeuw, Dieter& Nevado, Bruno& Busselen, Paul& Snoeks, Jos& Verheyen, Erik. Extensive Introgression among Ancestral mtDNA Lineages : Phylogenetic Relationships of the Utaka within the Lake Malawi Cichlid Flock. International Journal of Evolutionary Biology. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-504583
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-504583