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首页> 外文期刊>Fisheries Management and Ecology >Prevalence of stocked whitefish in River Kemijoki, Finland, inferred by micro X-ray fluorescence analysis of otoliths
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Prevalence of stocked whitefish in River Kemijoki, Finland, inferred by micro X-ray fluorescence analysis of otoliths

机译：在芬兰河克西希基河河河克米济氏河的患病率推断出右侧右X射线荧光分析

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摘要

Micro X-ray fluorescence (mu-XRF) analysis of otoliths was evaluated as a method to estimate the proportion of stocked one-summer-old whitefish Coregonus lavaretus L. in catches of adult fish (n = 20) ascending the River Kemijoki to spawn. Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analysis was applied as control. Polished otoliths were scanned with mu-XRF to obtain strontium maps that were used to infer visually the provenance of the whitefish. Thirteen of the fish showed signs of being stocked as one-summer-old fingerlings. LA-ICP-MS was applied to determine the elemental composition in a spot outside the core of the otolith. The results were largely consistent with the visual inspection of the mu-XRF mapped otoliths. In conclusion, mu-XRF mapping successfully identified whitefish stocked as one-summer-old fingerlings. The vast majority of whitefish returning to the River Kemijoki to spawn were stocked fish.
机译：评价微X射线荧光（MU-XRF）分析偏离偏离的方法，以估算库存一夏天老白鱼内核山脉L.在成人鱼（n = 20）河上升到克里米岛的捕捞量 。 激光烧蚀电感耦合等离子体质谱（La-ICP-MS）分析作为对照。 用MU-XRF扫描抛光的偏离偏离物右侧，以获得用于在视觉上推断出白鱼的出处的锶地图。 十三个鱼展示了被储存为单夏古的鱼片的迹象。 施用LA-ICP-MS以确定偏斯特斯核心之外的斑点中的元素组成。 结果在很大程度上是一致的Mu-XRF映射右侧的视觉检查。 总之，Mu-XRF映射成功地确定了作为单夏旧的鱼片的白鱼。 绝大多数的白鱼回到克里米之河以产卵的鱼类被储存。

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