View : 26 Download: 0

On the origin of Lake Malawi cichlid species: A population genetic analysis of divergence

Title
On the origin of Lake Malawi cichlid species: A population genetic analysis of divergence
Authors
Won Y.-J.Sivasundar A.Wang Y.Hey J.
Ewha Authors
원용진
SCOPUS Author ID
원용진scopus
Issue Date
2005
Journal Title
Proceedings of the National Academy of Sciences of the United States of America
ISSN
0027-8424JCR Link
Citation
vol. 102, no. SUPPL. 1, pp. 6581 - 6586
Indexed
SCI; SCIE; SCOPUS scopus
Abstract
The cichlid fishes of Lake Malawi are famously diverse. However, phylogenetic and population genetic studies of their history have been difficult because of the great amount of genetic variation that is shared between species. We apply a recently developed method for fitting the "isolation with migration" divergence model to a data set of specially designed compound loci to develop portraits of cichlid species divergence. Outgroup sequences from a cichlid from Lake Tanganyika permit model parameter estimates in units of years and effective population sizes. Estimated speciation times range from 1,000 to 17,000 years for species in the genus Tropheops. These exceptionally recent dates suggest that Malawi cichlids as a group experience a very active and dynamic diversification process. Current effective population size estimates range form 2,000 to near 40,000, and to > 120,000 for estimates of ancestral population sizes. It appears that very recent speciation and gene flow are among the reasons why it has been difficult to discern the phylogenetic history of Malawi cichlids. © 2005 by The National Academy of Sciences of the USA.
DOI
10.1073/pnas.0502127102
Appears in Collections:
자연과학대학 > 생명과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE