Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage
Unobserved diversity, such as undetected genetic structure or the presence of cryptic species, is of concern for the conservation and management of global biodiversity in the face of threatening anthropogenic processes. For instance, unobserved diversity can lead to overestimation of maximum sustain...
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Online Access: | http://hdl.handle.net/10138/300265 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/300265 2024-01-07T09:42:10+01:00 Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage Momigliano, Paolo Jokinen, Henri Calboli, Federico Aro, Eero Merilä, Juha Ecological Genetics Research Unit Organismal and Evolutionary Biology Research Programme Tvärminne Zoological Station Ecology and Evolutionary Biology 2019-03-21T13:33:03Z 11 application/pdf http://hdl.handle.net/10138/300265 eng eng Wiley 10.1111/eva.12738 Suomen Kulttuurirahasto; Maj ja Tor Nesslingin Saatio; Helsinki Institute of Life Sciences (HiLife); Walter and Andree de Nottbeck foundation; Academy of Finland, Grant/Award Number: 134728, 218343, 129662 and 316294 Momigliano , P , Jokinen , H , Calboli , F , Aro , E & Merilä , J 2019 , ' Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage ' , Evolutionary Applications , vol. 12 , no. 3 , pp. 549-559 . https://doi.org/10.1111/eva.12738 ORCID: /0000-0001-9614-0072/work/70943348 ORCID: /0000-0001-7617-7820/work/70948597 85061958130 cf9de08f-5d54-4cc4-8bde-cd830750e552 http://hdl.handle.net/10138/300265 000459328300014 cc_by openAccess info:eu-repo/semantics/openAccess Baltic Sea climate change eutrophication fishery flounder mixed-stock otolith unobserved diversity COD GADUS-MORHUA ATLANTIC COD CLIMATE-CHANGE FRESH-WATER MARINE MANAGEMENT FISHERIES FLESUS ADAPTATION 1181 Ecology evolutionary biology Article publishedVersion 2019 ftunivhelsihelda 2023-12-14T00:06:37Z Unobserved diversity, such as undetected genetic structure or the presence of cryptic species, is of concern for the conservation and management of global biodiversity in the face of threatening anthropogenic processes. For instance, unobserved diversity can lead to overestimation of maximum sustainable yields and therefore to overharvesting of the more vulnerable stock components within unrecognized mixed-stock fisheries. We used DNA from archival (otolith) samples to reconstruct the temporal (1976-2011) genetic makeup of two mixed-stock flounder fisheries in the angstrom land Sea (AS) and the Gulf of Finland (GoF). Both fisheries have hitherto been managed as a single stock of European flounders (Platichthys flesus), but were recently revealed to target two closely related species: the pelagic-spawning P. flesus and the newly described, demersal-spawning P. solemdali. While the AS and GoF fisheries were assumed to consist exclusively of P. solemdali, P. flesus dominated the GoF flounder assemblage (87% of total) in 1983, had disappeared (0%) by 1993, and remained in low proportions (10%-11%) thereafter. In the AS, P. solemdali dominated throughout the sampling period (>70%), and P. flesus remained in very low proportions after 1983. The disappearance of P. flesus from the GoF coincides in time with a dramatic (similar to 60%) decline in commercial landings and worsening environmental conditions in P. flesus' northernmost spawning ground, the Eastern Gotland Basin, in the preceding 4-6 years. These results are compatible with the hypothesis that P. flesus in the GoF is a sink population relying on larval subsidies from southern spawning grounds and the cause of their disappearance is a cessation of larval supply. Our results highlight the importance of uncovering unobserved genetic diversity and studying spatiotemporal changes in the relative contribution of different stock components, as well as the underlying environmental causes, to manage marine resources in the age of rapid anthropogenic change. Peer ... Article in Journal/Newspaper atlantic cod Gadus morhua HELDA – University of Helsinki Open Repository Gotland Basin ENVELOPE(19.167,19.167,58.500,58.500) Evolutionary Applications 12 3 549 559 |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
topic |
Baltic Sea climate change eutrophication fishery flounder mixed-stock otolith unobserved diversity COD GADUS-MORHUA ATLANTIC COD CLIMATE-CHANGE FRESH-WATER MARINE MANAGEMENT FISHERIES FLESUS ADAPTATION 1181 Ecology evolutionary biology |
spellingShingle |
Baltic Sea climate change eutrophication fishery flounder mixed-stock otolith unobserved diversity COD GADUS-MORHUA ATLANTIC COD CLIMATE-CHANGE FRESH-WATER MARINE MANAGEMENT FISHERIES FLESUS ADAPTATION 1181 Ecology evolutionary biology Momigliano, Paolo Jokinen, Henri Calboli, Federico Aro, Eero Merilä, Juha Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage |
topic_facet |
Baltic Sea climate change eutrophication fishery flounder mixed-stock otolith unobserved diversity COD GADUS-MORHUA ATLANTIC COD CLIMATE-CHANGE FRESH-WATER MARINE MANAGEMENT FISHERIES FLESUS ADAPTATION 1181 Ecology evolutionary biology |
description |
Unobserved diversity, such as undetected genetic structure or the presence of cryptic species, is of concern for the conservation and management of global biodiversity in the face of threatening anthropogenic processes. For instance, unobserved diversity can lead to overestimation of maximum sustainable yields and therefore to overharvesting of the more vulnerable stock components within unrecognized mixed-stock fisheries. We used DNA from archival (otolith) samples to reconstruct the temporal (1976-2011) genetic makeup of two mixed-stock flounder fisheries in the angstrom land Sea (AS) and the Gulf of Finland (GoF). Both fisheries have hitherto been managed as a single stock of European flounders (Platichthys flesus), but were recently revealed to target two closely related species: the pelagic-spawning P. flesus and the newly described, demersal-spawning P. solemdali. While the AS and GoF fisheries were assumed to consist exclusively of P. solemdali, P. flesus dominated the GoF flounder assemblage (87% of total) in 1983, had disappeared (0%) by 1993, and remained in low proportions (10%-11%) thereafter. In the AS, P. solemdali dominated throughout the sampling period (>70%), and P. flesus remained in very low proportions after 1983. The disappearance of P. flesus from the GoF coincides in time with a dramatic (similar to 60%) decline in commercial landings and worsening environmental conditions in P. flesus' northernmost spawning ground, the Eastern Gotland Basin, in the preceding 4-6 years. These results are compatible with the hypothesis that P. flesus in the GoF is a sink population relying on larval subsidies from southern spawning grounds and the cause of their disappearance is a cessation of larval supply. Our results highlight the importance of uncovering unobserved genetic diversity and studying spatiotemporal changes in the relative contribution of different stock components, as well as the underlying environmental causes, to manage marine resources in the age of rapid anthropogenic change. Peer ... |
author2 |
Ecological Genetics Research Unit Organismal and Evolutionary Biology Research Programme Tvärminne Zoological Station Ecology and Evolutionary Biology |
format |
Article in Journal/Newspaper |
author |
Momigliano, Paolo Jokinen, Henri Calboli, Federico Aro, Eero Merilä, Juha |
author_facet |
Momigliano, Paolo Jokinen, Henri Calboli, Federico Aro, Eero Merilä, Juha |
author_sort |
Momigliano, Paolo |
title |
Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage |
title_short |
Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage |
title_full |
Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage |
title_fullStr |
Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage |
title_full_unstemmed |
Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage |
title_sort |
cryptic temporal changes in stock composition explain the decline of a flounder (platichthys spp.) assemblage |
publisher |
Wiley |
publishDate |
2019 |
url |
http://hdl.handle.net/10138/300265 |
long_lat |
ENVELOPE(19.167,19.167,58.500,58.500) |
geographic |
Gotland Basin |
geographic_facet |
Gotland Basin |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
10.1111/eva.12738 Suomen Kulttuurirahasto; Maj ja Tor Nesslingin Saatio; Helsinki Institute of Life Sciences (HiLife); Walter and Andree de Nottbeck foundation; Academy of Finland, Grant/Award Number: 134728, 218343, 129662 and 316294 Momigliano , P , Jokinen , H , Calboli , F , Aro , E & Merilä , J 2019 , ' Cryptic temporal changes in stock composition explain the decline of a flounder (Platichthys spp.) assemblage ' , Evolutionary Applications , vol. 12 , no. 3 , pp. 549-559 . https://doi.org/10.1111/eva.12738 ORCID: /0000-0001-9614-0072/work/70943348 ORCID: /0000-0001-7617-7820/work/70948597 85061958130 cf9de08f-5d54-4cc4-8bde-cd830750e552 http://hdl.handle.net/10138/300265 000459328300014 |
op_rights |
cc_by openAccess info:eu-repo/semantics/openAccess |
container_title |
Evolutionary Applications |
container_volume |
12 |
container_issue |
3 |
container_start_page |
549 |
op_container_end_page |
559 |
_version_ |
1787423083100897280 |