Literaturdatenbank
Literaturdatenbank |
|
 |
|
Spinks, P. Q. , Introgression, hybridization and interpretation of phylogenetic analyses: examples from turtles. Paper presented at Turtle Survival Alliance 2007 Annual Meeting.
Added by: Sarina Wunderlich (01 Jan 2009 23:10:45 UTC) |
| Resource type: Proceedings Article BibTeX citation key: Spinks2007a View all bibliographic details  |
Categories: General Keywords: Genetik = genetics, invasive Arten = invasive species, Schildkröten = turtles + tortoises, Systematik = taxonomy Creators: Spinks Collection: Turtle Survival Alliance 2007 Annual Meeting |
Views: 3/483
Views index: 8% Popularity index: 2% |
| Abstract |
|
The last few years have seen a sharp increase in both the number and scale of molecular phylogenetic analyses of turtles, and results from some of these analyses have major implications for the conservation of turtles. While the general utility of mtDNA for phylogenetic and phylogeographic analyses is well established, a growing body of evidence suggests that inferences of phylogeny based on any individual gene, and mtDNA in particular, should be tempered with caution. Incongruence between mitochondrial DNA (mtDNA) and nuclear DNA (nuDNA)-based phylogenetic reconstructions is commonly observed, and has been attributed to mechanisms including limited variability, incomplete lineage sorting, introgression/hybridization, and natural selection. In addition, the mitochondrial genome is a single genetic locus that can provide only a single perspective on the evolutionary history of a group. Thus, mtDNA alone is often inadequate for phylogeographic/phylogenetic analyses, especially when complex evolutionary scenarios such as introgression, hybridization, or selection are at play. Indeed, radically different conclusions can be drawn from a particular analysis depending on the history of the taxa in question, the type of marker(s) used in the analysis, and how the data are interpreted.
Added by: Sarina Wunderlich |