Assortative mating frames establishment in a young island bird population
Successful island colonizations are key events to understand range dynamic processes, but studying a young population right after it reaches establishment is a rare opportunity in natural systems. The genetic structure of a recently established population may offer unique insights into its colonizat...
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crroyalsociety:10.1098/rsos.190050 2024-06-02T08:15:53+00:00 Assortative mating frames establishment in a young island bird population Engler, Jan O. Sacher, Thomas Coppack, Timothy Bairlein, Franz Fonds Wetenschappelijk Onderzoek Deutsche Forschungsgemeinschaft 2019 http://dx.doi.org/10.1098/rsos.190050 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190050 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.190050 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Royal Society Open Science volume 6, issue 8, page 190050 ISSN 2054-5703 journal-article 2019 crroyalsociety https://doi.org/10.1098/rsos.190050 2024-05-07T14:16:30Z Successful island colonizations are key events to understand range dynamic processes, but studying a young population right after it reaches establishment is a rare opportunity in natural systems. The genetic structure of a recently established population may offer unique insights into its colonization history and demographic processes that are important for a successful colonization. Here, we studied the population genetics of a recently established island population of Eurasian blackbirds (Aves: Turdus merula ) located on the island of Heligoland in the German North Sea. Using microsatellites, we genotyped the majority of the island population, including the nestlings, over a 4-year period between 2004 and 2007. We also genotyped high numbers of migrants on stopover and mainland individuals, as they are potential founders of the island population. We identified two genetic clusters that comply with the migrating and mainland birds. While most of the island birds belong to the mainland cluster, some breeding individuals and a low fraction of the offspring belong to the genetic cluster found in migrating individuals with almost no admixture between the two, pointing to assortative mating acting on the island population. We did not find any evidence for founder events and detected deviations from the Hardy–Weinberg equilibrium that disappeared in cohorts of older age that coincide with a lower number of siblings in older cohorts. The observed genetic patterns unravel a complex colonization history to which migratory and mainland birds have contributed and which is characterized by assortative mating. Further research will be directed towards habitat selection and phenotypic differences as potential drivers of assortative mating in this island population. Article in Journal/Newspaper Young Island The Royal Society Young Island ENVELOPE(162.400,162.400,-66.417,-66.417) Royal Society Open Science 6 8 190050 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
Successful island colonizations are key events to understand range dynamic processes, but studying a young population right after it reaches establishment is a rare opportunity in natural systems. The genetic structure of a recently established population may offer unique insights into its colonization history and demographic processes that are important for a successful colonization. Here, we studied the population genetics of a recently established island population of Eurasian blackbirds (Aves: Turdus merula ) located on the island of Heligoland in the German North Sea. Using microsatellites, we genotyped the majority of the island population, including the nestlings, over a 4-year period between 2004 and 2007. We also genotyped high numbers of migrants on stopover and mainland individuals, as they are potential founders of the island population. We identified two genetic clusters that comply with the migrating and mainland birds. While most of the island birds belong to the mainland cluster, some breeding individuals and a low fraction of the offspring belong to the genetic cluster found in migrating individuals with almost no admixture between the two, pointing to assortative mating acting on the island population. We did not find any evidence for founder events and detected deviations from the Hardy–Weinberg equilibrium that disappeared in cohorts of older age that coincide with a lower number of siblings in older cohorts. The observed genetic patterns unravel a complex colonization history to which migratory and mainland birds have contributed and which is characterized by assortative mating. Further research will be directed towards habitat selection and phenotypic differences as potential drivers of assortative mating in this island population. |
author2 |
Fonds Wetenschappelijk Onderzoek Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Engler, Jan O. Sacher, Thomas Coppack, Timothy Bairlein, Franz |
spellingShingle |
Engler, Jan O. Sacher, Thomas Coppack, Timothy Bairlein, Franz Assortative mating frames establishment in a young island bird population |
author_facet |
Engler, Jan O. Sacher, Thomas Coppack, Timothy Bairlein, Franz |
author_sort |
Engler, Jan O. |
title |
Assortative mating frames establishment in a young island bird population |
title_short |
Assortative mating frames establishment in a young island bird population |
title_full |
Assortative mating frames establishment in a young island bird population |
title_fullStr |
Assortative mating frames establishment in a young island bird population |
title_full_unstemmed |
Assortative mating frames establishment in a young island bird population |
title_sort |
assortative mating frames establishment in a young island bird population |
publisher |
The Royal Society |
publishDate |
2019 |
url |
http://dx.doi.org/10.1098/rsos.190050 https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190050 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsos.190050 |
long_lat |
ENVELOPE(162.400,162.400,-66.417,-66.417) |
geographic |
Young Island |
geographic_facet |
Young Island |
genre |
Young Island |
genre_facet |
Young Island |
op_source |
Royal Society Open Science volume 6, issue 8, page 190050 ISSN 2054-5703 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsos.190050 |
container_title |
Royal Society Open Science |
container_volume |
6 |
container_issue |
8 |
container_start_page |
190050 |
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1800740196222763008 |