The DDT‐induced decline influenced genetic diversity in naturally recovered Peregrine falcons (Falco peregrinus) nesting within the Alaska Arctic and eastern interior

We assessed the influence of the severe mid‐20th century population decline on genetic diversity in non‐augmented Peregrine Falcon Falco peregrinus populations nesting within the Alaska Arctic and eastern Interior. Microsatellite and mitochondrial DNA (mtDNA) data were analysed for Peregrine Falcons...

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Bibliographic Details
Published inIbis (London, England) Vol. 164; no. 4; pp. 1265 - 1272
Main Authors Sonsthagen, Sarah A., Swem, Ted, Ambrose, Skip, Flamme, Melanie J., White, Clayton M., Sage, George K., Talbot, Sandra L.
Format Journal Article
LanguageEnglish
Published Oxford Blackwell Publishing Ltd 01.10.2022
Subjects
Falco peregrinus
Genetic diversity
Genetic variation
Haplotypes
Immigration
Inbreeding
Microsatellites
Mitochondrial DNA
Nesting
Peregrine Falcon
Polar environments
Population decline
Population dynamics
Population genetics
Population growth
Population number
Reduction
temporal genetic differentiation
United States > US
Alaska
Arctic region
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Summary:We assessed the influence of the severe mid‐20th century population decline on genetic diversity in non‐augmented Peregrine Falcon Falco peregrinus populations nesting within the Alaska Arctic and eastern Interior. Microsatellite and mitochondrial DNA (mtDNA) data were analysed for Peregrine Falcons sampled from three periods: pre‐decline, decline and post‐decline. The influence of the decline on genetic diversity differed between the two locales. The Alaska Arctic was characterized by shifts in mtDNA haplotype frequencies, increased inbreeding coefficient, reduction in effective population size and increase in private haplotypes, and a signature of post‐decline population growth was detected; by contrast, the eastern Interior showed a reduction in haplotype diversity and no differences in allelic or haplotypic frequencies between pre‐ and post‐decline periods, though pre‐decline birds clustered away from the other two periods and allelic frequency differences were observed between decline and post‐decline periods. Patterns in genetic diversity suggest populations recovered through recruitment from within and immigration.
ISSN:0019-1019
1474-919X
DOI:10.1111/ibi.13095