Historical demography of bird populations from Hispaniola assessed by nuclear and mitochondrial gene sequences

Title:

Historical demography of bird populations from Hispaniola assessed by nuclear and mitochondrial gene sequences

Creator:

Fahey, Anna L., Ricklefs, Robert E., and Dewoody, J. Andrew

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6923a5e5-fdf9-4895-b9c2-abe6fb4f2995
uuid:6923a5e5-fdf9-4895-b9c2-abe6fb4f2995

Subject:

intron, neutrality statistics, migration, Illumina MiSeq, and amplicon sequencing

Type:

article, model:article, and TEXT

Description:

Molecular markers can be used to infer the demographic history of a given species, but many historic processes simultaneously impact multiple species. Thus, comparative historical demography has the potential to provide insight into drivers of evolution. In this study, we used nuclear DNA (nDNA) sequences to corroborate (or refute) demographic inferences based on earlier mitochondrial DNA (mtDNA) data from 16 species of Hispaniola birds. Our previously published analysis suggested population expansion in five of six migratory species (following glacial retreat in North America), with less evidence of expansion in non-migratory species. Additional molecular markers should reduce locus-specific bias, and so we generated sequence data for several nuclear loci. Test statistics associated with the nDNA provided only equivocal evidence for population expansion in 10 of the 16 species. Discordance between mtDNA and nDNA is not uncommon because the two genomes are exposed to different selective pressures and have different effective population sizes and modes of inheritance. The nDNA analyses reported here cast some doubt on our earlier mtDNA inferences. They also suggest that the signal to noise ratio of demographic statistics is typically low because of the inherent variability in selective regimes and coalescence across loci.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Folia zoologica | 2015 Volume:64 | Number:3

Harvested from:

CDK

Metadata only:

false