Relationships between fish stock changes in the Baltic Sea and the M74 syndrome, a reproductive disorder of Atlantic salmon (Salmo salar)
The M74 syndrome of Baltic salmon (Salmo salar), which appears as increased yolk-sac fry mortality (YSFM), impairs the reproduction of salmon stocks. Changes in the prey stocks of Baltic salmon in its two feeding areas, the southern Baltic Proper (BPr), where sprat (Sprattus sprattus) was the main p...
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Language: | English |
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Online Access: | http://hdl.handle.net/11585/721654 https://doi.org/10.1093/icesjms/fsr156 |
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ftunibolognairis:oai:cris.unibo.it:11585/721654 2024-04-14T08:09:11+00:00 Relationships between fish stock changes in the Baltic Sea and the M74 syndrome, a reproductive disorder of Atlantic salmon (Salmo salar) Mikkonen J Keinänen M Casini M Pönni J Vuorinen P Mikkonen J Keinänen M Casini M Pönni J Vuorinen P 2011 STAMPA http://hdl.handle.net/11585/721654 https://doi.org/10.1093/icesjms/fsr156 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000295985500017 volume:68 firstpage:2134 lastpage:2144 numberofpages:11 journal:ICES JOURNAL OF MARINE SCIENCE http://hdl.handle.net/11585/721654 doi:10.1093/icesjms/fsr156 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-80054100970 Atlantic salmon Baltic Sea growth herring M74 syndrome sprat yolk-sac fry mortality info:eu-repo/semantics/article 2011 ftunibolognairis https://doi.org/10.1093/icesjms/fsr156 2024-03-21T18:13:50Z The M74 syndrome of Baltic salmon (Salmo salar), which appears as increased yolk-sac fry mortality (YSFM), impairs the reproduction of salmon stocks. Changes in the prey stocks of Baltic salmon in its two feeding areas, the southern Baltic Proper (BPr), where sprat (Sprattus sprattus) was the main prey species during the high incidence of M74, and the Bothnian Sea, where herring (Clupea harengus) is the dominant species, were analysed in relation to salmon growth and size and in relation to the incidence of M74. The high condition factor (CF . 1.05) of prespawning salmon predicted high YSFM. From the various stock factors of sprat and herring in the southern BPr, the biomass of sprat had the strongest positive relationships with the CF of prespawning salmon, and the total prey biomass with YSFM. It is concluded that the ample but unbalanced food resources for salmon in the BPr, primarily sprat, induce M74. By reducing the fishing pressure on cod (Gadus morhua) and by more effectively managing the sprat fishery in years when the cod stock is weak, the incidence of the M74 syndrome could be reduced and even prevented. Article in Journal/Newspaper Atlantic salmon Gadus morhua Salmo salar IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) ICES Journal of Marine Science 68 10 2134 2144 |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
Atlantic salmon Baltic Sea growth herring M74 syndrome sprat yolk-sac fry mortality |
spellingShingle |
Atlantic salmon Baltic Sea growth herring M74 syndrome sprat yolk-sac fry mortality Mikkonen J Keinänen M Casini M Pönni J Vuorinen P Relationships between fish stock changes in the Baltic Sea and the M74 syndrome, a reproductive disorder of Atlantic salmon (Salmo salar) |
topic_facet |
Atlantic salmon Baltic Sea growth herring M74 syndrome sprat yolk-sac fry mortality |
description |
The M74 syndrome of Baltic salmon (Salmo salar), which appears as increased yolk-sac fry mortality (YSFM), impairs the reproduction of salmon stocks. Changes in the prey stocks of Baltic salmon in its two feeding areas, the southern Baltic Proper (BPr), where sprat (Sprattus sprattus) was the main prey species during the high incidence of M74, and the Bothnian Sea, where herring (Clupea harengus) is the dominant species, were analysed in relation to salmon growth and size and in relation to the incidence of M74. The high condition factor (CF . 1.05) of prespawning salmon predicted high YSFM. From the various stock factors of sprat and herring in the southern BPr, the biomass of sprat had the strongest positive relationships with the CF of prespawning salmon, and the total prey biomass with YSFM. It is concluded that the ample but unbalanced food resources for salmon in the BPr, primarily sprat, induce M74. By reducing the fishing pressure on cod (Gadus morhua) and by more effectively managing the sprat fishery in years when the cod stock is weak, the incidence of the M74 syndrome could be reduced and even prevented. |
author2 |
Mikkonen J Keinänen M Casini M Pönni J Vuorinen P |
format |
Article in Journal/Newspaper |
author |
Mikkonen J Keinänen M Casini M Pönni J Vuorinen P |
author_facet |
Mikkonen J Keinänen M Casini M Pönni J Vuorinen P |
author_sort |
Mikkonen J |
title |
Relationships between fish stock changes in the Baltic Sea and the M74 syndrome, a reproductive disorder of Atlantic salmon (Salmo salar) |
title_short |
Relationships between fish stock changes in the Baltic Sea and the M74 syndrome, a reproductive disorder of Atlantic salmon (Salmo salar) |
title_full |
Relationships between fish stock changes in the Baltic Sea and the M74 syndrome, a reproductive disorder of Atlantic salmon (Salmo salar) |
title_fullStr |
Relationships between fish stock changes in the Baltic Sea and the M74 syndrome, a reproductive disorder of Atlantic salmon (Salmo salar) |
title_full_unstemmed |
Relationships between fish stock changes in the Baltic Sea and the M74 syndrome, a reproductive disorder of Atlantic salmon (Salmo salar) |
title_sort |
relationships between fish stock changes in the baltic sea and the m74 syndrome, a reproductive disorder of atlantic salmon (salmo salar) |
publishDate |
2011 |
url |
http://hdl.handle.net/11585/721654 https://doi.org/10.1093/icesjms/fsr156 |
genre |
Atlantic salmon Gadus morhua Salmo salar |
genre_facet |
Atlantic salmon Gadus morhua Salmo salar |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000295985500017 volume:68 firstpage:2134 lastpage:2144 numberofpages:11 journal:ICES JOURNAL OF MARINE SCIENCE http://hdl.handle.net/11585/721654 doi:10.1093/icesjms/fsr156 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-80054100970 |
op_doi |
https://doi.org/10.1093/icesjms/fsr156 |
container_title |
ICES Journal of Marine Science |
container_volume |
68 |
container_issue |
10 |
container_start_page |
2134 |
op_container_end_page |
2144 |
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1796306645700050944 |