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首页> 外文期刊>Marine biology >Fatty acid signatures connect thiamine deficiency with the diet of the Atlantic salmon (Salmo salar) feeding in the Baltic Sea
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Fatty acid signatures connect thiamine deficiency with the diet of the Atlantic salmon (Salmo salar) feeding in the Baltic Sea

机译:脂肪酸特征将硫胺素缺乏症与波罗的海大西洋鲑(Salmo salar)的饮食联系在一起

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摘要

Thiamine (vitamin B1) deficiency in salmonids related to a lipid-rich fish diet causes offspring mortality in the yolk-sac fry phase. A low free thiamine (THIAM) concentration in eggs is an indication of this syndrome. Thiamine deficiency of salmon (Salmo salar) feeding in the Baltic Sea, called M74, was connected to the principal prey fish and feeding area using fatty acid (FA) signature analysis. The FAs of feeding salmon from two areas of the Baltic Sea, the Baltic Proper (57 degrees 10 19 degrees 30) and the Bothnian Sea (61 degrees 30 20 degrees 00) in 2004, reflected the principal prey species in these areas, sprat (Sprattus sprattus) and herring (Clupea harengus), respectively. Arachidonic acid (ARA, 20:4n-6) and 18:1n-7 indicated dietary herring, 18:1n-9 dietary sprat and 14:0 feeding in the Baltic Proper. The muscle FA profile of non-M74 female spawners of the River Simojoki in a year (1998) with a moderate M74 incidence and salmon of a non-M74year (2004) reflected herring FAs, whereas the FAs in the M74year and specifically in M74 females displayed characteristics of sprat. In the M74year, the THIAM concentration had the strongest positive correlation with the proportion of muscle ARA, and the strongest negative correlations with 14:0 and the ratios 18:1n-9/ARA and 14:0/ARA. Thus, ARA along with 14:0 and these ratios were the most sensitive FA indicators of the dietary species and origin of the M74 syndrome. Despite the pre-spawning fasting, tissue FA signatures were consequently able to connect dietary sprat in the Baltic Proper with thiamine deficiency in Baltic salmon.
机译:与富含脂质的鱼类饮食有关的鲑鱼中硫胺素(维生素B1)的缺乏会导致卵黄囊苗期的后代死亡。鸡蛋中的游离硫胺素(THIAM)浓度低表明该综合征。在波罗的海饲养的鲑鱼(Salmo salar)的硫胺素缺乏症,通过脂肪酸(FA)标记分析与主要的猎物和摄食区有关。 2004年,来自波罗的海两个地区的波罗的海适当地区(57度10 19度30度)和博特尼亚海地区(61度30 20度00度)的鲑鱼FA反映了这些地区的主要猎物物种,鲱鱼(鲱鱼(Sprattus sprattus)和鲱鱼(Clupea harengus)。花生四烯酸(ARA,20:4n-6)和18:1n-7表示饮食鲱鱼,18:1n-9饮食鲱鱼和14:0喂食波罗的海适当食物。在1998年的Simojoki河中,非M74雌性产卵者的肌肉FA概况具有中等的M74发生率,而非M74年的鲑鱼(2004年)的鲑鱼的FA表现为鲱鱼FA,而M74年,特别是M74雌性中的FA显示西鲱的特征。在M74年中,THIAM浓度与肌肉ARA的比例具有最强的正相关,与14:0以及18:1n-9 / ARA和14:0 / ARA的比例具有最强的负相关。因此,ARA与14:0和这些比率是饮食类型和M74综合征起源的最敏感的FA指标。尽管产卵前已禁食,但组织FA信号仍能够将波罗的海适当地区的饮食小枝与波罗的海鲑鱼中的硫胺素缺乏联系起来。

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  • 来源
    《Marine biology》 |2018年第10期|161.1-161.17|共17页
  • 作者单位

    Univ Helsinki, Dept Biosci, POB 65, FI-00014 Helsinki, Finland;

    Nat Resources Inst Finland Luke, POB 2, FI-00791 Helsinki, Finland;

    Nat Resources Inst Finland Luke, Puuvillakuja 6, FI-65200 Vaasa, Finland;

    Nat Resources Inst Finland Luke, Itainen Pitkakatu 4 A, FI-20520 Turku, Finland;

    Finnish Food Safety Author Evira, Mustialankatu 3, FI-00790 Helsinki, Finland;

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