M74 syndrome in Baltic salmon

Startår

2009

Slutår

2013

Projektmål

Aims and lines of research The aim of the research is to clarify the causes and mechanisms behind the M74 syndrome. The M74 research covers the ecology and feed of Baltic salmon and the role of organohalogens in the syndrome. The incidence of M74 is monitored annually by experimental incubations of eggs from those salmon stocks that are able to reproduce in the wild. These are salmon ascending the Tornionjoki, Simojoki (the Bothnian Bay) and Kymijoki (the Gulf of Finland) rivers. Salmon from the Tenojoki river (the Arctic Ocean) have been monitored as a comparison. M74 in salmon from the Tornionjoki, Simojoki, Kemijoki and Kymijoki rivers The incidence of M74, in terms of frequency and severity, is being monitored in salmon ascending different rivers 1. to find out mean yolk-sac fry mortality and the proportions of females producing offspring suffering from M74 by means of experimental incubation and biochemical analysis and by studying physiological changes; 2. to produce information for evaluating of the state of salmon stocks and fisheries management; 3. to develop methods for predicting the incidence and severity of M74; 4. to find the causes of temporal variation and river and female-specific variation in the strength of M74 for developing ways of mitigating the effects of the reproduction disorder and for the sustainable exploitation of salmon stocks

Projektdeltagare

Ansvarig organisation

Ursprunglig organisation

Vilt- och fiskeriforskningsinstitutet

Personer

Vuorinen Pekka J.

Relaterade organisationer

Kotkan kalamiehet ry
Canada Centre for Inland Waters
US Geological Survey

Resultat

Resultat och påverkan

Julkaisuluettelo:M74 publications Keinänen, M., Uddström, A., Mikkonen, J., Rytilahti, J., Juntunen, E.-P., Nikonen, S. & Vuorinen, P. J. 2008. The M74 syndrome of Baltic salmon: the monitoring results from Finnish rivers up until 2007. (Abstract in English) Riista- ja kalatalous ? Selvityksiä 4/2008. 21 s. Vähä, V., Romakkaniemi, A., Ankkuriniemi, M., Pulkkinen, K. & Keinänen, M. 2008. Monitoring of the salmon and trout stocks in the River Tornionjoki in 2007. (Abstract in English) Riista- ja kalatalous - Selvityksiä 7/2008. 27 s. Haikonen, A., Romakkaniemi, A., Ankkuriniemi, M., Keinänen, M., Pulkkinen, K. & Vihtakari, M. 2006. Lohi- ja meritaimenkantojen seuranta Tornionjoessa vuonna 2005. Monitoring of the salmon and trout stocks in the River Tornionjoki in 2005. Kala- ja riistaraportteja 379, s. 1-52 + 8 liitesivua. Ikonen, E. 2006. The role of the feeding migration and diet of Atlantic salmon (Salmo salar L.) in yolk-sac fry mortality (M74) in the Baltic Sea. PhD Thesis, The Department of Biological and Environmental Sciences, Faculty of Biosciences, University of Helsinki, Finland and Finnish Game and Fisheries Research Institute. 34s. Hansson, S., Karlsson, L., Ikonen, E., Christensen, O., Mitans, A., Uzars, D., Petersson, E. & Ragnarsson, B. 2001. Stomach analysis of Baltic salmon from 1959-1962 and 1994-1997: possible relations between diet and yolk-sac fry mortality (M74). J. Fish Biol. 58: 1730?1745. Karlsson L., Ikonen E., Mitans A. & Hansson S. 1999. The diet of salmon (Salmo salar) in the Baltic sea and connections with the M74 syndrome. Ambio 28: 37?42. Karlsson L., Ikonen E., Mitans A., Hansson S. & Uzars D. 1999. Thiamine levels in migrating salmon spawners (Salmo salar) in the Gulf of Riga and in the Gulf of Bothnia. In: Bengtsson B.-E., Hill C. & Nellbring S. (eds), Nordic Research Cooperation on Reproductive Disturbances in Fish. Report from the Redfish project. TemaNord 1999:530: 67-88. Abstract. Keinänen M., Tolonen T., Ikonen E., Parmanne R., Tigerstedt C., Rytilahti J., Soivio A. & Vuorinen P.J. 2000. Itämeren lohen lisääntymishäiriö - M74 (Abstract in English: Reproduction disorder of Baltic salmon (the M74 syndrome): research and monitoring.). Riista- ja kalatalouden tutkimuslaitos, Kalatutkimuksia - Fiskundersökningar 165, 38 p. Löflund M., Amcoff P., Eerola S., Hartikainen K., Sistonen S., Vuorinen P.J. & Soivio A. 1999. Quality assurance of thiamine analyses in connection with investigations of reproductive disturbances in Baltic fish: a proficiency study. In: Bengtsson B.-E., Hill C. & Nellbring S. (eds), Nordic Research Cooperation on Reproductive Disturbances in Fish. Report from the Redfish project. TemaNord 1999:530: 49-58. Abstract. Vuorinen P.J. & Keinänen M. 1999. Environmental toxicants and thiamine in connection with the M74 syndrome in Baltic salmon (Salmo salar). In: Bengtsson B.-E., Hill C. & Nellbring S. (eds), Nordic Research Cooperation on Reproductive Disturbances in Fish. Report from the Redfish project. TemaNord 1999:530: 25-37. Abstract. Vuorinen P.J., Parmanne R., Vartiainen T., Keinänen M., Kiviranta H., Kotovuori O. & Halling F. 2002. PCDD, PCDF, PCB and thiamine in Baltic herring (Clupea harengus L.) and sprat (Sprattus sprattus (L.)) as a background to the M74 syndrome of Baltic salmon (Salmo salar L.). ICES J. Mar. Sci. 59: 480?496.

Övriga uppgifter

Nyckelord

Elinympäristöt ja monimuotoisuus, Kemijoki, Kymijoki, Lohi, M74-oireyhtymä, Simojoki, Tenojoki, Tornionjoki