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首页> 外文期刊>Marine biology >Dietary Effects On Multi-element Composition Of European Eel (anguilla Anguilla) Otoliths
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Dietary Effects On Multi-element Composition Of European Eel (anguilla Anguilla) Otoliths

机译：饮食对欧洲鳗O耳石多元素组成的影响

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Otolith microchemistry is widely used as a tool to track individual migration pathways of diadromous fish under the assumption that the elemental composition of fish otoliths is directly influenced by the physicochemical properties of the surrounding water. Nevertheless, several endogenous factors are reported to affect element incorporation into fish otoliths and might lead to misinterpretations of migration studies. This study experimentally examined the influence of eight different diets on the microchemical composition of European eel (Anguilla anguilla) otoliths using laser ablation inductively coupled plasma mass spec-trometry (LA-ICP-MS). Seven natural prey types and one artificial diet were fed during 8 weeks in freshwater circuits. Results show for the first time that food has no significant influence on the incorporation of Na, Sr, Ba, Mg, Mn, Cu and Y into European eel otoliths. This indicates that the incorporation of elements usually chosen for migration studies is not affected by diet and that individual feeding behaviour of A. anguilla will not lead to any misinterpretation of migration pathways.
机译：在假设鱼耳石的元素组成直接受周围水的理化性质影响的假设下，耳石微化学被广泛用作追踪缺水鱼类个体迁移途径的工具。然而，据报道有几种内源性因素影响元素掺入鱼耳石中，并可能导致对迁移研究的误解。这项研究使用激光烧蚀电感耦合等离子体质谱法（LA-ICP-MS），通过实验研究了八种不同饮食对欧洲鳗鱼（Anguilla anguilla）耳石微化学成分的影响。在8周的淡水循环中喂食了7种天然猎物和1种人工饲料。结果首次表明，食物对Na，Sr，Ba，Mg，Mn，Cu和Y掺入欧洲鳗鱼耳石中没有显着影响。这表明通常为迁移研究选择的元素的掺入不受饮食的影响，而安圭曲霉的个体进食行为不会导致对迁移途径的任何误解。

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