Model for estimating thiamine deficiency-related mortality of Atlantic salmon (Salmo salar) offspring and variation in the Baltic salmon M74 syndrome

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Vuorinen , P J , Rokka , M , Nikonen , S , Juntunen , E-P , Ritvanen , T , Heinimaa , P & Keinänen , M 2021 , ' Model for estimating thiamine deficiency-related mortality of Atlantic salmon (Salmo salar) offspring and variation in the Baltic salmon M74 syndrome ' , Marine and Freshwater Behaviour and Physiology , vol. 54 , no. 3 , pp. 97-131 . https://doi.org/10.1080/10236244.2021.1941942

Title: Model for estimating thiamine deficiency-related mortality of Atlantic salmon (Salmo salar) offspring and variation in the Baltic salmon M74 syndrome
Author: Vuorinen, Pekka J.; Rokka, Mervi; Nikonen, Soili; Juntunen, Esa-Pekka; Ritvanen, Tiina; Heinimaa, Petri; Keinänen, Marja
Contributor: University of Helsinki, Molecular and Integrative Biosciences Research Programme
Date: 2021-07-25
Language: eng
Number of pages: 35
Belongs to series: Marine and Freshwater Behaviour and Physiology
ISSN: 1023-6244
URI: http://hdl.handle.net/10138/332680
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.
Subject: 1181 Ecology, evolutionary biology
Atlantic salmon Salmo salar
Baltic Sea
condition factor
M74 syndrome
thiamine deficiency
yolk-sac fry mortality
YOLK-SAC-FRY
FATTY-ACID-COMPOSITION
CLUPEA-HARENGUS L.
OXIDATIVE STRESS
LAKE TROUT
SPRATTUS-SPRATTUS
REPRODUCTIVE DISORDER
EGG-THIAMINE
SYNDROME EMS
SEA
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