Fragmented habitat compensates for the adverse effects of genetic bottleneck
In the face of the human-caused biodiversity crisis, understanding the theoretical basis of conservation efforts of endangered species and populations has become increasingly important. According to population genetics theory, population subdivision helps organisms retain genetic diversity, crucial...
Published in: | Current Biology |
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Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2023
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Online Access: | https://curis.ku.dk/portal/da/publications/fragmented-habitat-compensates-for-the-adverse-effects-of-genetic-bottleneck(b9096035-af32-4eb6-9f43-f619876647bd).html https://doi.org/10.1016/j.cub.2023.01.040 https://curis.ku.dk/ws/files/340690563/1_s2.0_S096098222300074X_main.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/b9096035-af32-4eb6-9f43-f619876647bd 2024-06-09T07:49:16+00:00 Fragmented habitat compensates for the adverse effects of genetic bottleneck Löytynoja, Ari Rastas, Pasi Valtonen, Mia Kammonen, Juhana Holm, Liisa Olsen, Morten Tange Paulin, Lars Jernvall, Jukka Auvinen, Petri 2023 application/pdf https://curis.ku.dk/portal/da/publications/fragmented-habitat-compensates-for-the-adverse-effects-of-genetic-bottleneck(b9096035-af32-4eb6-9f43-f619876647bd).html https://doi.org/10.1016/j.cub.2023.01.040 https://curis.ku.dk/ws/files/340690563/1_s2.0_S096098222300074X_main.pdf eng eng info:eu-repo/semantics/openAccess Löytynoja , A , Rastas , P , Valtonen , M , Kammonen , J , Holm , L , Olsen , M T , Paulin , L , Jernvall , J & Auvinen , P 2023 , ' Fragmented habitat compensates for the adverse effects of genetic bottleneck ' , Current Biology , vol. 33 , no. 6 , pp. 1009-1018.e7 . https://doi.org/10.1016/j.cub.2023.01.040 genetic bottleneck genetic variation habitat fragmentation mammals metapopulation pinniped runs of homozygosity article 2023 ftcopenhagenunip https://doi.org/10.1016/j.cub.2023.01.040 2024-05-16T11:29:28Z In the face of the human-caused biodiversity crisis, understanding the theoretical basis of conservation efforts of endangered species and populations has become increasingly important. According to population genetics theory, population subdivision helps organisms retain genetic diversity, crucial for adaptation in a changing environment. Habitat topography is thought to be important for generating and maintaining population subdivision, but empirical cases are needed to test this assumption. We studied Saimaa ringed seals, landlocked in a labyrinthine lake and recovering from a drastic bottleneck, with additional samples from three other ringed seal subspecies. Using whole-genome sequences of 145 seals, we analyzed the distribution of variation and genetic relatedness among the individuals in relation to the habitat shape. Despite a severe history of genetic bottlenecks with prevalent homozygosity in Saimaa ringed seals, we found evidence for the population structure mirroring the subregions of the lake. Our genome-wide analyses showed that the subpopulations had retained unique variation and largely complementary patterns of homozygosity, highlighting the significance of habitat connectivity in conservation biology and the power of genomic tools in understanding its impact. The central role of the population substructure in preserving genetic diversity at the metapopulation level was confirmed by simulations. Integration of genetic analyses in conservation decisions gives hope to Saimaa ringed seals and other endangered species in fragmented habitats. Article in Journal/Newspaper ringed seal University of Copenhagen: Research Current Biology 33 6 1009 1018.e7 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
genetic bottleneck genetic variation habitat fragmentation mammals metapopulation pinniped runs of homozygosity |
spellingShingle |
genetic bottleneck genetic variation habitat fragmentation mammals metapopulation pinniped runs of homozygosity Löytynoja, Ari Rastas, Pasi Valtonen, Mia Kammonen, Juhana Holm, Liisa Olsen, Morten Tange Paulin, Lars Jernvall, Jukka Auvinen, Petri Fragmented habitat compensates for the adverse effects of genetic bottleneck |
topic_facet |
genetic bottleneck genetic variation habitat fragmentation mammals metapopulation pinniped runs of homozygosity |
description |
In the face of the human-caused biodiversity crisis, understanding the theoretical basis of conservation efforts of endangered species and populations has become increasingly important. According to population genetics theory, population subdivision helps organisms retain genetic diversity, crucial for adaptation in a changing environment. Habitat topography is thought to be important for generating and maintaining population subdivision, but empirical cases are needed to test this assumption. We studied Saimaa ringed seals, landlocked in a labyrinthine lake and recovering from a drastic bottleneck, with additional samples from three other ringed seal subspecies. Using whole-genome sequences of 145 seals, we analyzed the distribution of variation and genetic relatedness among the individuals in relation to the habitat shape. Despite a severe history of genetic bottlenecks with prevalent homozygosity in Saimaa ringed seals, we found evidence for the population structure mirroring the subregions of the lake. Our genome-wide analyses showed that the subpopulations had retained unique variation and largely complementary patterns of homozygosity, highlighting the significance of habitat connectivity in conservation biology and the power of genomic tools in understanding its impact. The central role of the population substructure in preserving genetic diversity at the metapopulation level was confirmed by simulations. Integration of genetic analyses in conservation decisions gives hope to Saimaa ringed seals and other endangered species in fragmented habitats. |
format |
Article in Journal/Newspaper |
author |
Löytynoja, Ari Rastas, Pasi Valtonen, Mia Kammonen, Juhana Holm, Liisa Olsen, Morten Tange Paulin, Lars Jernvall, Jukka Auvinen, Petri |
author_facet |
Löytynoja, Ari Rastas, Pasi Valtonen, Mia Kammonen, Juhana Holm, Liisa Olsen, Morten Tange Paulin, Lars Jernvall, Jukka Auvinen, Petri |
author_sort |
Löytynoja, Ari |
title |
Fragmented habitat compensates for the adverse effects of genetic bottleneck |
title_short |
Fragmented habitat compensates for the adverse effects of genetic bottleneck |
title_full |
Fragmented habitat compensates for the adverse effects of genetic bottleneck |
title_fullStr |
Fragmented habitat compensates for the adverse effects of genetic bottleneck |
title_full_unstemmed |
Fragmented habitat compensates for the adverse effects of genetic bottleneck |
title_sort |
fragmented habitat compensates for the adverse effects of genetic bottleneck |
publishDate |
2023 |
url |
https://curis.ku.dk/portal/da/publications/fragmented-habitat-compensates-for-the-adverse-effects-of-genetic-bottleneck(b9096035-af32-4eb6-9f43-f619876647bd).html https://doi.org/10.1016/j.cub.2023.01.040 https://curis.ku.dk/ws/files/340690563/1_s2.0_S096098222300074X_main.pdf |
genre |
ringed seal |
genre_facet |
ringed seal |
op_source |
Löytynoja , A , Rastas , P , Valtonen , M , Kammonen , J , Holm , L , Olsen , M T , Paulin , L , Jernvall , J & Auvinen , P 2023 , ' Fragmented habitat compensates for the adverse effects of genetic bottleneck ' , Current Biology , vol. 33 , no. 6 , pp. 1009-1018.e7 . https://doi.org/10.1016/j.cub.2023.01.040 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.cub.2023.01.040 |
container_title |
Current Biology |
container_volume |
33 |
container_issue |
6 |
container_start_page |
1009 |
op_container_end_page |
1018.e7 |
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1801381650564644864 |