Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty Blackbird
The arrangement of habitat features via historical or contemporary events can strongly influence genomic and demographic connectivity, and in turn affect levels of genetic diversity and resilience of populations to environmental perturbation. The rusty blackbird (<i>Euphagus carolinus</i>...
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-02-01
|
Series: | Diversity |
Subjects: | |
Online Access: | https://www.mdpi.com/1424-2818/13/3/103 |
id |
doaj-3a9474e935964a4aa7bf425981669e8e |
---|---|
record_format |
Article |
spelling |
doaj-3a9474e935964a4aa7bf425981669e8e2021-02-26T00:04:40ZengMDPI AGDiversity1424-28182021-02-011310310310.3390/d13030103Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty BlackbirdRobert E. Wilson0Steven M. Matsuoka1Luke L. Powell2James A. Johnson3Dean W. Demarest4Diana Stralberg5Sarah A. Sonsthagen6U.S. Geological Survey, Alaska Science Center, Anchorage, AK 99508, USAU.S. Geological Survey, Alaska Science Center, Anchorage, AK 99508, USAInstitute of Animal Health and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UKUnited States Fish and Wildlife Service, Migratory Bird Management, Anchorage, AK 99503, USAUnited States Fish and Wildlife Service, Division of Migratory Birds, Atlanta, GA 30345, USADepartment of Renewable Resources, University of Alberta, Edmonton, AB T6G 2H1, CanadaU.S. Geological Survey, Alaska Science Center, Anchorage, AK 99508, USAThe arrangement of habitat features via historical or contemporary events can strongly influence genomic and demographic connectivity, and in turn affect levels of genetic diversity and resilience of populations to environmental perturbation. The rusty blackbird (<i>Euphagus carolinus</i>) is a forested wetland habitat specialist whose population size has declined sharply (78%) over recent decades. The species breeds across the expansive North American boreal forest region, which contains a mosaic of habitat conditions resulting from active natural disturbance regimes and glacial history. We used landscape genomics to evaluate how past and present landscape features have shaped patterns of genetic diversity and connectivity across the species’ breeding range. Based on reduced-representation genomic and mitochondrial DNA, genetic structure followed four broad patterns influenced by both historical and contemporary forces: (1) an east–west partition consistent with vicariance during the last glacial maximum; (2) a potential secondary contact zone between eastern and western lineages at James Bay, Ontario; (3) insular differentiation of birds on Newfoundland; and (4) restricted regional gene flow among locales within western and eastern North America. The presence of genomic structure and therefore restricted dispersal among populations may limit the species’ capacity to respond to rapid environmental change.https://www.mdpi.com/1424-2818/13/3/103<i>Euphagus carolinus</i>genetic diversityborealglacial refugiaphylogeography |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Robert E. Wilson Steven M. Matsuoka Luke L. Powell James A. Johnson Dean W. Demarest Diana Stralberg Sarah A. Sonsthagen |
spellingShingle |
Robert E. Wilson Steven M. Matsuoka Luke L. Powell James A. Johnson Dean W. Demarest Diana Stralberg Sarah A. Sonsthagen Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty Blackbird Diversity <i>Euphagus carolinus</i> genetic diversity boreal glacial refugia phylogeography |
author_facet |
Robert E. Wilson Steven M. Matsuoka Luke L. Powell James A. Johnson Dean W. Demarest Diana Stralberg Sarah A. Sonsthagen |
author_sort |
Robert E. Wilson |
title |
Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty Blackbird |
title_short |
Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty Blackbird |
title_full |
Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty Blackbird |
title_fullStr |
Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty Blackbird |
title_full_unstemmed |
Implications of Historical and Contemporary Processes on Genetic Differentiation of a Declining Boreal Songbird: The Rusty Blackbird |
title_sort |
implications of historical and contemporary processes on genetic differentiation of a declining boreal songbird: the rusty blackbird |
publisher |
MDPI AG |
series |
Diversity |
issn |
1424-2818 |
publishDate |
2021-02-01 |
description |
The arrangement of habitat features via historical or contemporary events can strongly influence genomic and demographic connectivity, and in turn affect levels of genetic diversity and resilience of populations to environmental perturbation. The rusty blackbird (<i>Euphagus carolinus</i>) is a forested wetland habitat specialist whose population size has declined sharply (78%) over recent decades. The species breeds across the expansive North American boreal forest region, which contains a mosaic of habitat conditions resulting from active natural disturbance regimes and glacial history. We used landscape genomics to evaluate how past and present landscape features have shaped patterns of genetic diversity and connectivity across the species’ breeding range. Based on reduced-representation genomic and mitochondrial DNA, genetic structure followed four broad patterns influenced by both historical and contemporary forces: (1) an east–west partition consistent with vicariance during the last glacial maximum; (2) a potential secondary contact zone between eastern and western lineages at James Bay, Ontario; (3) insular differentiation of birds on Newfoundland; and (4) restricted regional gene flow among locales within western and eastern North America. The presence of genomic structure and therefore restricted dispersal among populations may limit the species’ capacity to respond to rapid environmental change. |
topic |
<i>Euphagus carolinus</i> genetic diversity boreal glacial refugia phylogeography |
url |
https://www.mdpi.com/1424-2818/13/3/103 |
work_keys_str_mv |
AT robertewilson implicationsofhistoricalandcontemporaryprocessesongeneticdifferentiationofadecliningborealsongbirdtherustyblackbird AT stevenmmatsuoka implicationsofhistoricalandcontemporaryprocessesongeneticdifferentiationofadecliningborealsongbirdtherustyblackbird AT lukelpowell implicationsofhistoricalandcontemporaryprocessesongeneticdifferentiationofadecliningborealsongbirdtherustyblackbird AT jamesajohnson implicationsofhistoricalandcontemporaryprocessesongeneticdifferentiationofadecliningborealsongbirdtherustyblackbird AT deanwdemarest implicationsofhistoricalandcontemporaryprocessesongeneticdifferentiationofadecliningborealsongbirdtherustyblackbird AT dianastralberg implicationsofhistoricalandcontemporaryprocessesongeneticdifferentiationofadecliningborealsongbirdtherustyblackbird AT sarahasonsthagen implicationsofhistoricalandcontemporaryprocessesongeneticdifferentiationofadecliningborealsongbirdtherustyblackbird |
_version_ |
1724250339100590080 |