Spatial population genetics in heavily managed species: Separating patterns of historical translocation from contemporary gene flow in white‐tailed deer
| Autor: | Bradley T. Martin, Zachery D. Zbinden, Tyler K. Chafin, Michael E. Douglas, Marlis R. Douglas, Christopher R. Middaugh, M. Cory Gray, Jennifer R. Ballard |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Evolution wildlife Wildlife Biodiversity Population genetics Odocoileus 010603 evolutionary biology 01 natural sciences Gene flow 03 medical and health sciences Diversity index Genetic drift Genetics QH359-425 Wildlife management Transect Ecology Evolution Behavior and Systematics population connectivity biology Ecology ddRADseq population structure Original Articles biology.organism_classification historical population dynamics 030104 developmental biology Geography Biological dispersal Original Article genetic drift General Agricultural and Biological Sciences gene flow management SNPs |
| Zdroj: | Evolutionary Applications, Vol 14, Iss 6, Pp 1673-1689 (2021) Evolutionary Applications |
| ISSN: | 1752-4571 |
| Popis: | Approximately 100 years ago, unregulated harvest nearly eliminated white-tailed deer (Odocoileus virginianus) from eastern North America, which subsequently served to catalyze wildlife management as a national priority. An extensive stock-replenishment effort soon followed, with deer broadly translocated among states as a means of re-establishment. However, an unintended consequence was that natural patterns of gene flow became obscured and pre-translocation signatures of population structure were replaced. We applied cutting-edge molecular and biogeographic tools to disentangle genetic signatures of historical management from those reflecting spatially heterogeneous dispersal by evaluating 35,099 single nucleotide polymorphisms (SNPs) derived via reduced-representation genomic sequencing from 1,143 deer sampled state-wide in Arkansas. We then employed Simpson’s diversity index to summarize ancestry assignments and visualize spatial genetic transitions. Using sub-sampled transects across these transitions, we tested clinal patterns across loci against theoretical expectations of their response under scenarios of recolonization and restricted dispersal. Two salient results emerged: (A) Genetic signatures from historic translocations are demonstrably apparent; and (B) Geographic filters (major rivers; urban centers; highways) now act as inflection points for the distribution of this contemporary ancestry. These results yielded a state-wide assessment of contemporary population structure in deer as driven by historic translocations as well as ongoing processes. In addition, the analytical framework employed herein to effectively decipher extant/historic drivers of deer distribution in Arkansas are also applicable for other biodiversity elements with similarly complex demographic histories. |
| Databáze: | OpenAIRE |
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