Evolution and disappearance of sympatric Coregonus albula in a changing environment—A case study of the only remaining population pair in Sweden
Abstract During the past 50 years, Fennoscandian populations of spring‐spawning Baltic cisco (Coregonus albula), sympatric to common autumn‐spawners, have declined or disappeared; for example, three out of four known spring‐spawning populations in Sweden are regarded as extinct. Over the same period...
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ftdoajarticles:oai:doaj.org/article:81e9e5e1cf6543a7b1bcbe09c1ec3a31 2023-05-15T16:13:05+02:00 Evolution and disappearance of sympatric Coregonus albula in a changing environment—A case study of the only remaining population pair in Sweden Bo Delling Stefan Palm 2019-11-01T00:00:00Z https://doi.org/10.1002/ece3.5745 https://doaj.org/article/81e9e5e1cf6543a7b1bcbe09c1ec3a31 EN eng Wiley https://doi.org/10.1002/ece3.5745 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.5745 https://doaj.org/article/81e9e5e1cf6543a7b1bcbe09c1ec3a31 Ecology and Evolution, Vol 9, Iss 22, Pp 12727-12753 (2019) climate Coregonus microevolution microsatellites morphology Ecology QH540-549.5 article 2019 ftdoajarticles https://doi.org/10.1002/ece3.5745 2022-12-31T06:29:30Z Abstract During the past 50 years, Fennoscandian populations of spring‐spawning Baltic cisco (Coregonus albula), sympatric to common autumn‐spawners, have declined or disappeared; for example, three out of four known spring‐spawning populations in Sweden are regarded as extinct. Over the same period, the climate has changed and populations have been subject to other anthropogenic stressors. We compared historic (1960s) and recent (1990–2000s) morphological data from the still‐existent sympatric cisco populations in Lake Fegen, Sweden. Phenotypic changes were found for spring‐spawners making them more similar to the sympatric autumn‐spawners that had remained virtually unchanged. Based on results for other salmoniform fishes, a phenotypically plastic response to increased temperature during early development appears unlikely. The recent material was also analyzed with microsatellite markers; long‐term effective population size in spring‐spawners was estimated to be about 20 times lower than autumn‐spawners, with signs of long‐term gene flow in both directions and a recent genetic bottleneck in spring‐spawners. We suggest the change toward a less distinct phenotype in spring‐spawners to reflect a recent increase in gene flow from autumn‐spawners. Time since divergence was estimated to only c. 1,900 years (95% CI: 400–5,900), but still the Fegen populations represent the most morphologically and genetically distinct sympatric populations studied. Consequently, we hypothesize that less distinct population pairs can be even younger and that spring‐spawning may have repeatedly evolved and disappeared in several lakes since the end of the last glaciation, concurrent with changed environmental conditions. Article in Journal/Newspaper Fennoscandian Directory of Open Access Journals: DOAJ Articles Ecology and Evolution 9 22 12727 12753 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
climate Coregonus microevolution microsatellites morphology Ecology QH540-549.5 |
spellingShingle |
climate Coregonus microevolution microsatellites morphology Ecology QH540-549.5 Bo Delling Stefan Palm Evolution and disappearance of sympatric Coregonus albula in a changing environment—A case study of the only remaining population pair in Sweden |
topic_facet |
climate Coregonus microevolution microsatellites morphology Ecology QH540-549.5 |
description |
Abstract During the past 50 years, Fennoscandian populations of spring‐spawning Baltic cisco (Coregonus albula), sympatric to common autumn‐spawners, have declined or disappeared; for example, three out of four known spring‐spawning populations in Sweden are regarded as extinct. Over the same period, the climate has changed and populations have been subject to other anthropogenic stressors. We compared historic (1960s) and recent (1990–2000s) morphological data from the still‐existent sympatric cisco populations in Lake Fegen, Sweden. Phenotypic changes were found for spring‐spawners making them more similar to the sympatric autumn‐spawners that had remained virtually unchanged. Based on results for other salmoniform fishes, a phenotypically plastic response to increased temperature during early development appears unlikely. The recent material was also analyzed with microsatellite markers; long‐term effective population size in spring‐spawners was estimated to be about 20 times lower than autumn‐spawners, with signs of long‐term gene flow in both directions and a recent genetic bottleneck in spring‐spawners. We suggest the change toward a less distinct phenotype in spring‐spawners to reflect a recent increase in gene flow from autumn‐spawners. Time since divergence was estimated to only c. 1,900 years (95% CI: 400–5,900), but still the Fegen populations represent the most morphologically and genetically distinct sympatric populations studied. Consequently, we hypothesize that less distinct population pairs can be even younger and that spring‐spawning may have repeatedly evolved and disappeared in several lakes since the end of the last glaciation, concurrent with changed environmental conditions. |
format |
Article in Journal/Newspaper |
author |
Bo Delling Stefan Palm |
author_facet |
Bo Delling Stefan Palm |
author_sort |
Bo Delling |
title |
Evolution and disappearance of sympatric Coregonus albula in a changing environment—A case study of the only remaining population pair in Sweden |
title_short |
Evolution and disappearance of sympatric Coregonus albula in a changing environment—A case study of the only remaining population pair in Sweden |
title_full |
Evolution and disappearance of sympatric Coregonus albula in a changing environment—A case study of the only remaining population pair in Sweden |
title_fullStr |
Evolution and disappearance of sympatric Coregonus albula in a changing environment—A case study of the only remaining population pair in Sweden |
title_full_unstemmed |
Evolution and disappearance of sympatric Coregonus albula in a changing environment—A case study of the only remaining population pair in Sweden |
title_sort |
evolution and disappearance of sympatric coregonus albula in a changing environment—a case study of the only remaining population pair in sweden |
publisher |
Wiley |
publishDate |
2019 |
url |
https://doi.org/10.1002/ece3.5745 https://doaj.org/article/81e9e5e1cf6543a7b1bcbe09c1ec3a31 |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
Ecology and Evolution, Vol 9, Iss 22, Pp 12727-12753 (2019) |
op_relation |
https://doi.org/10.1002/ece3.5745 https://doaj.org/toc/2045-7758 2045-7758 doi:10.1002/ece3.5745 https://doaj.org/article/81e9e5e1cf6543a7b1bcbe09c1ec3a31 |
op_doi |
https://doi.org/10.1002/ece3.5745 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
22 |
container_start_page |
12727 |
op_container_end_page |
12753 |
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1765998696504229888 |