Unexpected heterozygosity in an island mouflon population founded by a single pair of individuals.
International audience In population and conservation genetics, there is an overwhelming body of evidence that genetic diversity is lost over time in small populations. This idea has been supported by comparative studies showing that small populations have lower diversity than large populations. How...
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2007
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Online Access: | https://hal.science/hal-00132859 |
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ftunivrennes2hal:oai:HAL:hal-00132859v1 |
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openpolar |
institution |
Open Polar |
collection |
Archive Ouverte de l'Université Rennes (HAL) |
op_collection_id |
ftunivrennes2hal |
language |
English |
topic |
longitudinal study island population selection heterozygosity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
longitudinal study island population selection heterozygosity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Kaeuffer, Renaud Coltman, David, W. Chapuis, Jean Louis Pontier, Dominique Reale, Denis Unexpected heterozygosity in an island mouflon population founded by a single pair of individuals. |
topic_facet |
longitudinal study island population selection heterozygosity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience In population and conservation genetics, there is an overwhelming body of evidence that genetic diversity is lost over time in small populations. This idea has been supported by comparative studies showing that small populations have lower diversity than large populations. However, longitudinal studies reporting a decline in genetic diversity throughout the whole history of a given wild population are much less common. Here, we analysed changes in heterozygosity over time in an insular mouflon (Ovis aries) population founded by two individuals in 1957 and located on one of the most isolated locations in the world: the Kerguelen Sub-Antarctic archipelago. Heterozygosity measured using 25 microsatellite markers has actually increased over 46 years since the introduction, and exceeds the range predicted by neutral genetic models and stochastic simulations. Given the complete isolation of the population and the short period of time since the introduction, changes in genetic variation cannot be attributed to mutation or migration. Several lines of evidence suggest that the increase in heterozygosity with time may be attributable to selection. This study shows the importance of longitudinal genetic surveys for understanding the mechanisms that regulate genetic diversity in wild populations. |
author2 |
Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS) Département des Sciences Biologiques Montréal Université du Québec à Montréal = University of Québec in Montréal (UQAM) Department of Biological Sciences Edmonton University of Alberta Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Ecoépidémiologie évolutionniste Département écologie évolutive LBBE Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE) |
format |
Article in Journal/Newspaper |
author |
Kaeuffer, Renaud Coltman, David, W. Chapuis, Jean Louis Pontier, Dominique Reale, Denis |
author_facet |
Kaeuffer, Renaud Coltman, David, W. Chapuis, Jean Louis Pontier, Dominique Reale, Denis |
author_sort |
Kaeuffer, Renaud |
title |
Unexpected heterozygosity in an island mouflon population founded by a single pair of individuals. |
title_short |
Unexpected heterozygosity in an island mouflon population founded by a single pair of individuals. |
title_full |
Unexpected heterozygosity in an island mouflon population founded by a single pair of individuals. |
title_fullStr |
Unexpected heterozygosity in an island mouflon population founded by a single pair of individuals. |
title_full_unstemmed |
Unexpected heterozygosity in an island mouflon population founded by a single pair of individuals. |
title_sort |
unexpected heterozygosity in an island mouflon population founded by a single pair of individuals. |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00132859 |
geographic |
Antarctic Kerguelen |
geographic_facet |
Antarctic Kerguelen |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0962-8452 EISSN: 1471-2954 Proceedings of the Royal Society B: Biological Sciences https://hal.science/hal-00132859 Proceedings of the Royal Society B: Biological Sciences, 2007, 274, pp.527-533 |
op_relation |
hal-00132859 https://hal.science/hal-00132859 |
_version_ |
1798850801540530176 |
spelling |
ftunivrennes2hal:oai:HAL:hal-00132859v1 2024-05-12T07:54:37+00:00 Unexpected heterozygosity in an island mouflon population founded by a single pair of individuals. Kaeuffer, Renaud Coltman, David, W. Chapuis, Jean Louis Pontier, Dominique Reale, Denis Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE) Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS) Département des Sciences Biologiques Montréal Université du Québec à Montréal = University of Québec in Montréal (UQAM) Department of Biological Sciences Edmonton University of Alberta Ecosystèmes, biodiversité, évolution Rennes (ECOBIO) Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) Ecoépidémiologie évolutionniste Département écologie évolutive LBBE Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE) 2007 https://hal.science/hal-00132859 en eng HAL CCSD Royal Society, The hal-00132859 https://hal.science/hal-00132859 ISSN: 0962-8452 EISSN: 1471-2954 Proceedings of the Royal Society B: Biological Sciences https://hal.science/hal-00132859 Proceedings of the Royal Society B: Biological Sciences, 2007, 274, pp.527-533 longitudinal study island population selection heterozygosity [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2007 ftunivrennes2hal 2024-04-17T16:20:16Z International audience In population and conservation genetics, there is an overwhelming body of evidence that genetic diversity is lost over time in small populations. This idea has been supported by comparative studies showing that small populations have lower diversity than large populations. However, longitudinal studies reporting a decline in genetic diversity throughout the whole history of a given wild population are much less common. Here, we analysed changes in heterozygosity over time in an insular mouflon (Ovis aries) population founded by two individuals in 1957 and located on one of the most isolated locations in the world: the Kerguelen Sub-Antarctic archipelago. Heterozygosity measured using 25 microsatellite markers has actually increased over 46 years since the introduction, and exceeds the range predicted by neutral genetic models and stochastic simulations. Given the complete isolation of the population and the short period of time since the introduction, changes in genetic variation cannot be attributed to mutation or migration. Several lines of evidence suggest that the increase in heterozygosity with time may be attributable to selection. This study shows the importance of longitudinal genetic surveys for understanding the mechanisms that regulate genetic diversity in wild populations. Article in Journal/Newspaper Antarc* Antarctic Archive Ouverte de l'Université Rennes (HAL) Antarctic Kerguelen |