Image_1_Historical Demographic Processes Dominate Genetic Variation in Ancient Atlantic Cod Mitogenomes.pdf
Ancient DNA (aDNA) approaches have been successfully used to infer the long-term impacts of climate change, domestication, and human exploitation in a range of terrestrial species. Nonetheless, studies investigating such impacts using aDNA in marine species are rare. Atlantic cod (Gadus morhua), is...
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ftsmithonian:oai:figshare.com:article/14729130 2023-05-15T15:26:44+02:00 Image_1_Historical Demographic Processes Dominate Genetic Variation in Ancient Atlantic Cod Mitogenomes.pdf Lourdes Martínez-García (10920846) Giada Ferrari (769501) Tom Oosting (7061921) Rachel Ballantyne (10920849) Inge van der Jagt (10920852) Ingrid Ystgaard (10920855) Jennifer Harland (195837) Rebecca Nicholson (5775827) Sheila Hamilton-Dyer (195887) Helle Tessand Baalsrud (3254784) Marine Servane Ono Brieuc (10920858) Lane M. Atmore (10920861) Finlay Burns (10920864) Ulrich Schmölcke (691524) Kjetill S. Jakobsen (7913804) Sissel Jentoft (453341) David Orton (578015) Anne Karin Hufthammer (8028155) James H. Barrett (8028158) Bastiaan Star (532216) 2021-06-04T04:57:00Z https://doi.org/10.3389/fevo.2021.671281.s001 unknown https://figshare.com/articles/figure/Image_1_Historical_Demographic_Processes_Dominate_Genetic_Variation_in_Ancient_Atlantic_Cod_Mitogenomes_pdf/14729130 doi:10.3389/fevo.2021.671281.s001 CC BY 4.0 CC-BY Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology population structure fisheries human exploitation phylogenomics population expansion demographic history Image Figure 2021 ftsmithonian https://doi.org/10.3389/fevo.2021.671281.s001 2021-06-13T15:13:31Z Ancient DNA (aDNA) approaches have been successfully used to infer the long-term impacts of climate change, domestication, and human exploitation in a range of terrestrial species. Nonetheless, studies investigating such impacts using aDNA in marine species are rare. Atlantic cod (Gadus morhua), is an economically important species that has experienced dramatic census population declines during the last century. Here, we investigated 48 ancient mitogenomes from historical specimens obtained from a range of archeological excavations in northern Europe dated up to 6,500 BCE. We compare these mitogenomes to those of 496 modern conspecifics sampled across the North Atlantic Ocean and adjacent seas. Our results confirm earlier observations of high levels of mitogenomic variation and a lack of mutation-drift equilibrium—suggestive of population expansion. Furthermore, our temporal comparison yields no evidence of measurable mitogenomic changes through time. Instead, our results indicate that mitogenomic variation in Atlantic cod reflects past demographic processes driven by major historical events (such as oscillations in sea level) and subsequent gene flow rather than contemporary fluctuations in stock abundance. Our results indicate that historical and contemporaneous anthropogenic pressures such as commercial fisheries have had little impact on mitogenomic diversity in a wide-spread marine species with high gene flow such as Atlantic cod. These observations do not contradict evidence that overfishing has had negative consequences for the abundance of Atlantic cod and the importance of genetic variation in implementing conservation strategies. Instead, these observations imply that any measures toward the demographic recovery of Atlantic cod in the eastern Atlantic, will not be constrained by recent loss of historical mitogenomic variation. Still Image atlantic cod Gadus morhua North Atlantic Unknown |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftsmithonian |
language |
unknown |
topic |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology population structure fisheries human exploitation phylogenomics population expansion demographic history |
spellingShingle |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology population structure fisheries human exploitation phylogenomics population expansion demographic history Lourdes Martínez-García (10920846) Giada Ferrari (769501) Tom Oosting (7061921) Rachel Ballantyne (10920849) Inge van der Jagt (10920852) Ingrid Ystgaard (10920855) Jennifer Harland (195837) Rebecca Nicholson (5775827) Sheila Hamilton-Dyer (195887) Helle Tessand Baalsrud (3254784) Marine Servane Ono Brieuc (10920858) Lane M. Atmore (10920861) Finlay Burns (10920864) Ulrich Schmölcke (691524) Kjetill S. Jakobsen (7913804) Sissel Jentoft (453341) David Orton (578015) Anne Karin Hufthammer (8028155) James H. Barrett (8028158) Bastiaan Star (532216) Image_1_Historical Demographic Processes Dominate Genetic Variation in Ancient Atlantic Cod Mitogenomes.pdf |
topic_facet |
Evolutionary Biology Ecology Invasive Species Ecology Landscape Ecology Conservation and Biodiversity Behavioural Ecology Community Ecology (excl. Invasive Species Ecology) Ecological Physiology Freshwater Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Population Ecology Terrestrial Ecology population structure fisheries human exploitation phylogenomics population expansion demographic history |
description |
Ancient DNA (aDNA) approaches have been successfully used to infer the long-term impacts of climate change, domestication, and human exploitation in a range of terrestrial species. Nonetheless, studies investigating such impacts using aDNA in marine species are rare. Atlantic cod (Gadus morhua), is an economically important species that has experienced dramatic census population declines during the last century. Here, we investigated 48 ancient mitogenomes from historical specimens obtained from a range of archeological excavations in northern Europe dated up to 6,500 BCE. We compare these mitogenomes to those of 496 modern conspecifics sampled across the North Atlantic Ocean and adjacent seas. Our results confirm earlier observations of high levels of mitogenomic variation and a lack of mutation-drift equilibrium—suggestive of population expansion. Furthermore, our temporal comparison yields no evidence of measurable mitogenomic changes through time. Instead, our results indicate that mitogenomic variation in Atlantic cod reflects past demographic processes driven by major historical events (such as oscillations in sea level) and subsequent gene flow rather than contemporary fluctuations in stock abundance. Our results indicate that historical and contemporaneous anthropogenic pressures such as commercial fisheries have had little impact on mitogenomic diversity in a wide-spread marine species with high gene flow such as Atlantic cod. These observations do not contradict evidence that overfishing has had negative consequences for the abundance of Atlantic cod and the importance of genetic variation in implementing conservation strategies. Instead, these observations imply that any measures toward the demographic recovery of Atlantic cod in the eastern Atlantic, will not be constrained by recent loss of historical mitogenomic variation. |
format |
Still Image |
author |
Lourdes Martínez-García (10920846) Giada Ferrari (769501) Tom Oosting (7061921) Rachel Ballantyne (10920849) Inge van der Jagt (10920852) Ingrid Ystgaard (10920855) Jennifer Harland (195837) Rebecca Nicholson (5775827) Sheila Hamilton-Dyer (195887) Helle Tessand Baalsrud (3254784) Marine Servane Ono Brieuc (10920858) Lane M. Atmore (10920861) Finlay Burns (10920864) Ulrich Schmölcke (691524) Kjetill S. Jakobsen (7913804) Sissel Jentoft (453341) David Orton (578015) Anne Karin Hufthammer (8028155) James H. Barrett (8028158) Bastiaan Star (532216) |
author_facet |
Lourdes Martínez-García (10920846) Giada Ferrari (769501) Tom Oosting (7061921) Rachel Ballantyne (10920849) Inge van der Jagt (10920852) Ingrid Ystgaard (10920855) Jennifer Harland (195837) Rebecca Nicholson (5775827) Sheila Hamilton-Dyer (195887) Helle Tessand Baalsrud (3254784) Marine Servane Ono Brieuc (10920858) Lane M. Atmore (10920861) Finlay Burns (10920864) Ulrich Schmölcke (691524) Kjetill S. Jakobsen (7913804) Sissel Jentoft (453341) David Orton (578015) Anne Karin Hufthammer (8028155) James H. Barrett (8028158) Bastiaan Star (532216) |
author_sort |
Lourdes Martínez-García (10920846) |
title |
Image_1_Historical Demographic Processes Dominate Genetic Variation in Ancient Atlantic Cod Mitogenomes.pdf |
title_short |
Image_1_Historical Demographic Processes Dominate Genetic Variation in Ancient Atlantic Cod Mitogenomes.pdf |
title_full |
Image_1_Historical Demographic Processes Dominate Genetic Variation in Ancient Atlantic Cod Mitogenomes.pdf |
title_fullStr |
Image_1_Historical Demographic Processes Dominate Genetic Variation in Ancient Atlantic Cod Mitogenomes.pdf |
title_full_unstemmed |
Image_1_Historical Demographic Processes Dominate Genetic Variation in Ancient Atlantic Cod Mitogenomes.pdf |
title_sort |
image_1_historical demographic processes dominate genetic variation in ancient atlantic cod mitogenomes.pdf |
publishDate |
2021 |
url |
https://doi.org/10.3389/fevo.2021.671281.s001 |
genre |
atlantic cod Gadus morhua North Atlantic |
genre_facet |
atlantic cod Gadus morhua North Atlantic |
op_relation |
https://figshare.com/articles/figure/Image_1_Historical_Demographic_Processes_Dominate_Genetic_Variation_in_Ancient_Atlantic_Cod_Mitogenomes_pdf/14729130 doi:10.3389/fevo.2021.671281.s001 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fevo.2021.671281.s001 |
_version_ |
1766357217959739392 |