1. Model for estimating thiamine deficiency-related mortality of Atlantic salmon (Salmo salar) offspring and variation in the Baltic salmon M74 syndrome
- Author
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Petri Heinimaa, Esa-Pekka Juntunen, Pekka J. Vuorinen, Tiina Ritvanen, Mervi Rokka, Marja Keinänen, Soili Nikonen, and Molecular and Integrative Biosciences Research Programme
- Subjects
0106 biological sciences ,Vitamin ,REPRODUCTIVE DISORDER ,Baltic Sea ,Sprattus sprattus ,Physiology ,Offspring ,Zoology ,Aquatic Science ,Oceanography ,01 natural sciences ,FATTY-ACID-COMPOSITION ,chemistry.chemical_compound ,yolk-sac fry mortality ,14. Life underwater ,OXIDATIVE STRESS ,Salmo ,Incubation ,Thiamine deficiency ,SPRATTUS-SPRATTUS ,chemistry.chemical_classification ,thiamine deficiency ,SEA ,biology ,EGG-THIAMINE ,010604 marine biology & hydrobiology ,CLUPEA-HARENGUS L ,04 agricultural and veterinary sciences ,YOLK-SAC-FRY ,biology.organism_classification ,SYNDROME EMS ,M74 syndrome ,Atlantic salmon Salmo salar ,chemistry ,1181 Ecology, evolutionary biology ,040102 fisheries ,LAKE TROUT ,0401 agriculture, forestry, and fisheries ,Thiamine ,condition factor ,Polyunsaturated fatty acid - Abstract
Thiamine (vitamin B1) deficiency of salmonines, caused by an abundant lipid-rich fish diet and consequently, the abundance of polyunsaturated fatty acids, is called the M74 syndrome in the Baltic Sea. Because of its deleterious effects on wild Atlantic salmon (Salmo salar) stocks and progeny production in fish cultivation, a model was developed to derive the annual female-specific mortality percentages of yolk-sac fry (YSFM) from the free thiamine concentrations of unfertilized eggs. In years with a high M74 incidence, thiamine-deficient females were larger, with a larger condition factor (CF) than non-M74 females. Otherwise, M74 females were generally smaller. The mean CF of M74 females was in most years higher than that of non-M74 females. The model compiled enables the cost-effective estimation of YSFM of individual female salmon, without the incubation of eggs and hatched yolk-sac fry for several months, thus benefitting the management of salmon stocks and their efficient utilization.
- Published
- 2021
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