Weak genetic structure, shared nonbreeding areas, and extensive movement in a declining waterbird

Shephard, Nicholas G.; Szczys, Patricia; Moore, David J.; Reudink, Matthew W.; Costa, Jeffrey N.; Bracey, Annie M.; Lisovski, Simeon; McKellar, Ann E.

Weak genetic structure, shared nonbreeding areas, and extensive movement in a declining waterbird

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dc.contributor.author: Shephard, Nicholas G.; Szczys, Patricia; Moore, David J.; Reudink, Matthew W.; Costa, Jeffrey N.; Bracey, Annie M.; Lisovski, Simeon; McKellar, Ann E.
dc.date.accepted: 2022-12-06
dc.date.accessioned: 2024-10-16T13:47:26Z
dc.date.available: 2024-10-16T13:47:26Z
dc.date.issued: 2022-12-26
dc.date.submitted: 2022-07-29
dc.description.abstract - en: Understanding population mixing, movements, and connectivity of populations is an important first step towards effective conservation, particularly for long distance migrants that are suffering the greatest population declines, as this allows researchers to recognize how populations may face different risks throughout the annual cycle. We combined population genetic and individual tracking data to quantify the genetic structure and full-cycle movements of the declining North American Black Tern (Chlidonias niger surinamensis). A total of 147 genetic samples were collected from nine breeding colonies across the range (Maine, Ontario, Michigan, Iowa, Wisconsin, Nebraska, Saskatchewan, and Oregon), and 19 light-level geolocators were recovered from three colonies (Ontario, Michigan, and Saskatchewan). Our results demonstrated weak genetic structure, and tracking data demonstrated the use of shared non-breeding areas between central (Saskatchewan) and eastern (Ontario and Michigan) breeding populations. Our tracking data also provide novel evidence of long-distance breeding dispersal (~1,400 km between breeding locations across years) based on an individual tracked across multiple years, as well as short distance dispersal (~2.5-57 km) based on new recovery locations of six tracked individuals. Our results are consistent with the hypothesis that the shared use of non-breeding areas influences physical condition, timing of departure, and subsequent reproductive timing in such a way as to facilitate dispersal across the breeding range and contribute to weak genetic structure among breeding populations. This study is the first to explore population genetics and migration of North American Black Terns. Extensive movement of individuals may pose a challenge from a conservation perspective as important areas and habitats throughout the annual cycle may be difficult to predict, and future studies should build on our work via extensive mark-resight effort using color bands, tracking individuals from more breeding sites, and examining carry-over effects to further investigate when in the annual cycle populations are most limited.
dc.description.fosrcfull - en: This is a pre-copyedited, author-produced version of an article accepted for publication in Ornithological Applications following peer review. The version of record Nicholas G Shephard, Patricia Szczys, David J Moore, Matthew W Reudink, Jeffrey N Costa, Annie M Bracey, Simeon Lisovski, Ann E McKellar, Weak genetic structure, shared nonbreeding areas, and extensive movement in a declining waterbird, Ornithological Applications, Volume 125, Issue 1, 3 February 2023, duac053, https://doi.org/10.1093/ornithapp/duac053 is available online at: <a href="https://doi.org/10.1093/ornithapp/duac053">https://doi.org/10.1093/ornithapp/duac053</a>.
dc.description.fosrcfull-fosrctranslation - fr: Ceci est la version de l’article produite par l’auteur, qui a été accepté pour publication dans Ornithological Applications. Cette version a été évaluée par les pairs, mais n’a pas encore été révisée par l’éditeur. La version publiée Nicholas G Shephard, Patricia Szczys, David J Moore, Matthew W Reudink, Jeffrey N Costa, Annie M Bracey, Simeon Lisovski, Ann E McKellar, Weak genetic structure, shared nonbreeding areas, and extensive movement in a declining waterbird, Ornithological Applications, Volume 125, Issue 1, 3 February 2023, duac053, https://doi.org/10.1093/ornithapp/duac053 est disponible en ligne à l'adresse suivante : <a href="https://doi.org/10.1093/ornithapp/duac053">https://doi.org/10.1093/ornithapp/duac053</a>.
dc.identifier.issn: 2732-4621; 0010-5422
dc.identifier.uri: https://open-science.canada.ca/handle/123456789/3065
dc.language.iso: en
dc.publisher: Oxford Academic
dc.relation.isreplacedby: https://doi.org/10.1093/ornithapp/duac053
dc.rights.openaccesslevel - en: Green
dc.rights.openaccesslevel - fr: Vert
dc.subject - en: Nature and environment; Science and technology
dc.subject - fr: Nature et environnement; Sciences et technologie
dc.subject.en - en: Nature and environment; Science and technology
dc.subject.fr - fr: Nature et environnement; Sciences et technologie
dc.title - en: Weak genetic structure, shared nonbreeding areas, and extensive movement in a declining waterbird
dc.type - en: Accepted manuscript
dc.type - fr: Manuscrit accepté
local.article.journalissue: 1
local.article.journaltitle: Ornithological Applications
local.article.journalvolume: 125
local.pagination: 43 pages
local.peerreview - en: Yes
local.peerreview - fr: Oui