Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections
The Saimaa ringed seal (Pusa hispida saimensis) is endemic to Lake Saimaa in Finland. The subspecies is thought to have originated when parts of the ringed seal population of the Baltic region were trapped in lakes emerging due to postglacial bedrock rebound around 9000 years ago. During the 20th ce...
Main Authors: | , , , , , , , , , , , |
---|---|
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
|
Subjects: | |
Online Access: | https://jukuri.luke.fi/handle/10024/553214 |
id |
ftluke:oai:jukuri.luke.fi:10024/553214 |
---|---|
record_format |
openpolar |
spelling |
ftluke:oai:jukuri.luke.fi:10024/553214 2024-02-11T10:08:09+01:00 Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections Heino, Matti T. Nyman, Tommi Palo, Jukka U. Harmoinen, Jenni Valtonen, Mia Pilot, Małgorzata Översti, Sanni Salmela, Elina Kunnasranta, Mervi Väinölä, Risto Hoelzel, A. Rus Aspi, Jouni orcid:0000-0003-2034-2019 orcid:0000-0001-5402-7127 4100110810 Luonnonvarakeskus 16 p. true https://jukuri.luke.fi/handle/10024/553214 en eng Wiley Ecology and Evolution 10.1002/ece3.9720 2045-7758 1 13 e9720 https://jukuri.luke.fi/handle/10024/553214 URN:NBN:fi-fe2023030129057 CC BY 4.0 genetic variation Pinnipedia museum collections freshwater pinniped genetic diversity genetic drift mitochondrial DNA museum specimens Saimaa ringed seal publication fi=A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä|sv=A1 Originalartikel i en vetenskaplig tidskrift|en=A1 Journal article (refereed), original research| fi=Publisher's version|sv=Publisher's version|en=Publisher's version| ftluke 2024-01-25T00:07:14Z The Saimaa ringed seal (Pusa hispida saimensis) is endemic to Lake Saimaa in Finland. The subspecies is thought to have originated when parts of the ringed seal population of the Baltic region were trapped in lakes emerging due to postglacial bedrock rebound around 9000 years ago. During the 20th century, the population experienced a drastic human-induced bottleneck. Today encompassing a little over 400 seals with extremely low genetic diversity, it is classified as endangered. We sequenced sections of the mitochondrial control region from 60 up to 125-years-old museum specimens of the Saimaa ringed seal. The generated dataset was combined with publicly available sequences. We studied how genetic variation has changed through time in this subspecies and how it is phylogenetically related to other ringed seal populations from the Baltic Sea, Lake Ladoga, North America, Svalbard, and the White Sea. We observed temporal fluctuations in haplotype frequencies and loss of haplotypes accompanied by a recent reduction in female effective population size. In apparent contrast with the traditionally held view of the Baltic origin of the population, the Saimaa ringed seal mtDNA variation also shows affinities to North American ringed seals. Our results suggest that the Saimaa ringed seal has experienced recent genetic drift associated with small population size. The results further suggest that extant Baltic ringed seal is not representative of the ancestral population of the Saimaa ringed seal, which calls for re-evaluation of the deep history of this subspecies. 2023 Article in Journal/Newspaper Pusa hispida ringed seal Svalbard White Sea Natural Resources Institute Finland: Jukuri Svalbard White Sea |
institution |
Open Polar |
collection |
Natural Resources Institute Finland: Jukuri |
op_collection_id |
ftluke |
language |
English |
topic |
genetic variation Pinnipedia museum collections freshwater pinniped genetic diversity genetic drift mitochondrial DNA museum specimens Saimaa ringed seal |
spellingShingle |
genetic variation Pinnipedia museum collections freshwater pinniped genetic diversity genetic drift mitochondrial DNA museum specimens Saimaa ringed seal Heino, Matti T. Nyman, Tommi Palo, Jukka U. Harmoinen, Jenni Valtonen, Mia Pilot, Małgorzata Översti, Sanni Salmela, Elina Kunnasranta, Mervi Väinölä, Risto Hoelzel, A. Rus Aspi, Jouni Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections |
topic_facet |
genetic variation Pinnipedia museum collections freshwater pinniped genetic diversity genetic drift mitochondrial DNA museum specimens Saimaa ringed seal |
description |
The Saimaa ringed seal (Pusa hispida saimensis) is endemic to Lake Saimaa in Finland. The subspecies is thought to have originated when parts of the ringed seal population of the Baltic region were trapped in lakes emerging due to postglacial bedrock rebound around 9000 years ago. During the 20th century, the population experienced a drastic human-induced bottleneck. Today encompassing a little over 400 seals with extremely low genetic diversity, it is classified as endangered. We sequenced sections of the mitochondrial control region from 60 up to 125-years-old museum specimens of the Saimaa ringed seal. The generated dataset was combined with publicly available sequences. We studied how genetic variation has changed through time in this subspecies and how it is phylogenetically related to other ringed seal populations from the Baltic Sea, Lake Ladoga, North America, Svalbard, and the White Sea. We observed temporal fluctuations in haplotype frequencies and loss of haplotypes accompanied by a recent reduction in female effective population size. In apparent contrast with the traditionally held view of the Baltic origin of the population, the Saimaa ringed seal mtDNA variation also shows affinities to North American ringed seals. Our results suggest that the Saimaa ringed seal has experienced recent genetic drift associated with small population size. The results further suggest that extant Baltic ringed seal is not representative of the ancestral population of the Saimaa ringed seal, which calls for re-evaluation of the deep history of this subspecies. 2023 |
author2 |
orcid:0000-0003-2034-2019 orcid:0000-0001-5402-7127 4100110810 Luonnonvarakeskus |
format |
Article in Journal/Newspaper |
author |
Heino, Matti T. Nyman, Tommi Palo, Jukka U. Harmoinen, Jenni Valtonen, Mia Pilot, Małgorzata Översti, Sanni Salmela, Elina Kunnasranta, Mervi Väinölä, Risto Hoelzel, A. Rus Aspi, Jouni |
author_facet |
Heino, Matti T. Nyman, Tommi Palo, Jukka U. Harmoinen, Jenni Valtonen, Mia Pilot, Małgorzata Översti, Sanni Salmela, Elina Kunnasranta, Mervi Väinölä, Risto Hoelzel, A. Rus Aspi, Jouni |
author_sort |
Heino, Matti T. |
title |
Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections |
title_short |
Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections |
title_full |
Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections |
title_fullStr |
Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections |
title_full_unstemmed |
Museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections |
title_sort |
museum specimens of a landlocked pinniped reveal recent loss of genetic diversity and unexpected population connections |
publisher |
Wiley |
url |
https://jukuri.luke.fi/handle/10024/553214 |
geographic |
Svalbard White Sea |
geographic_facet |
Svalbard White Sea |
genre |
Pusa hispida ringed seal Svalbard White Sea |
genre_facet |
Pusa hispida ringed seal Svalbard White Sea |
op_relation |
Ecology and Evolution 10.1002/ece3.9720 2045-7758 1 13 e9720 https://jukuri.luke.fi/handle/10024/553214 URN:NBN:fi-fe2023030129057 |
op_rights |
CC BY 4.0 |
_version_ |
1790607151219081216 |