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The genetic structu...
The genetic structure of the European breeding populations of a declining farmland bird, the ortolan bunting (Emberiza hortulana), reveals conservation priorities
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Moussy, Caroline (author)
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Arlettaz, Raphaël (author)
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Copete, José Luis (author)
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Dale, Svein (author)
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Dombrovski, Valery (author)
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Elts, Jaanus (author)
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Lorrillière, Romain (author)
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Marja, Riho (author)
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Pasquet, Eric (author)
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Piha, Markus (author)
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- Seimola, Tuomas (author)
- Umeå universitet,Institutionen för molekylärbiologi (Teknisk-naturvetenskaplig fakultet),Department of Agricultural Research in Northern Sweden, Swedish University of Agricultural Sciences
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- Selstam, Gunnar (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för norrländsk jordbruksvetenskap,Department of Agricultural Research for Northern Sweden,Umeå University
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Jiguet, Frédéric (author)
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(creator_code:org_t)
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- 2018-04-12
- 2018
- English.
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In: Conservation Genetics. - : Springer. - 1566-0621 .- 1572-9737. ; 19:4, s. 909-922
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://res.slu.se/i...
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Abstract
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- Anthropogenic activities, such as agricultural intensification, caused large declines in biodiversity, including farmland birds. In addition to demographic consequences, anthropogenic activities can result in loss of genetic diversity, reduction of gene flow and altered genetic structure. We investigated the distribution of the genetic variation of a declining farmland and long-distance migratory bird, the ortolan bunting Emberiza hortulana, across its European breeding range to assess the impact of human-driven population declines on genetic diversity and structure in order to advise conservation priorities. The large population declines observed have not resulted in dramatic loss of genetic diversity, which is moderate to high and constant across all sampled breeding sites. Extensive gene flow occurs across the breeding range, even across a migratory divide, which contributes little to genetic structuring. However, gene flow is asymmetric, with the large eastern populations acting as source populations for the smaller western ones. Furthermore, breeding populations that underwent the largest declines, in Fennoscandia and Baltic countries, appear to be recently isolated, with no gene exchange occurring with the eastern or the western populations. These are signs for concern as declines in the eastern populations could affect the strength of gene flow and in turn affect the western populations. The genetic, and demographic, isolation of the northern populations make them particularly sensitive to loss of genetic diversity and to extinction as no immigration is occurring to counter-act the drastic declines. In such a situation, conservation efforts are needed across the whole breeding range: in particular, protecting the eastern populations due to their key role in maintaining gene flow across the range, and focussing on the northern populations due to their recent isolation and endangered status.
Subject headings
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Endangered species
- Gene flow
- Genetic diversity
- Long-distance migrant
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Moussy, Caroline
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Arlettaz, Raphaë ...
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Copete, José Lui ...
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Dale, Svein
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Dombrovski, Vale ...
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Elts, Jaanus
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show more...
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Lorrillière, Rom ...
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Marja, Riho
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Pasquet, Eric
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Piha, Markus
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Seimola, Tuomas
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Selstam, Gunnar
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Jiguet, Frédéric
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Genetics
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Zoology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
- Articles in the publication
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Conservation Gen ...
- By the university
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Umeå University
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Swedish University of Agricultural Sciences