Tray Elizabeth, Brophy Deirdre, de Eyto Elvira, Ó'Maoileidigh Niall, Sheehan Timothy, Bradbury Ian, Crowley Quentin G
Marine and Freshwater Research Centre, Atlantic Technological University, Galway, Ireland.
Marine Institute, Furnace Newport, County Mayo, Ireland.
J Fish Biol. 2024 Dec;105(6):1951-1955. doi: 10.1111/jfb.15904. Epub 2024 Aug 19.
Fish scale microchemistry can be used to make life-history inferences, although ecological studies examining scale composition are relatively rare. Salmon scales have an external layer of calcium phosphate hydroxyl apatite (HAP). The structure, hardness, and calcium content of this layer have been shown to vary within and between species. This variation may lead to misinterpretation of trace element profiles. This study uses backscatter scanning electron microscopy with electron dispersive spectrometry to compare scales from salmon populations and to present a more detailed analysis of scale HAP than was previously available. Our findings extend the range of salmon populations for which HAP Ca is available and confirm previous findings that the HAP Ca is relatively invariable within this species.
鱼鳞微化学可用于推断生活史，尽管研究鳞片成分的生态学研究相对较少。鲑鱼鳞片有一层外部的磷酸钙羟基磷灰石（HAP）。已表明这一层的结构、硬度和钙含量在物种内部和物种之间存在差异。这种差异可能导致对微量元素分布的误解。本研究使用带能谱仪的背散射扫描电子显微镜来比较鲑鱼种群的鳞片，并对鳞片HAP进行比以往更详细的分析。我们的研究结果扩展了可获得HAP钙的鲑鱼种群范围，并证实了之前的研究结果，即该物种内的HAP钙相对稳定。
