Synchrotron µ-XRF mapping analysis of trace elements in in-situ cultured Japanese red coral, Corallium japonicum.
Synchrotron µ-XRF mapping analysis of trace elements in in-situ cultured Japanese red coral, Corallium japonicum.
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DOI：
10.7717/peerj.13931
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发表时间：
2022
期刊：
影响因子：
2.7
通讯作者：
Sawai, Hikaru
中科院分区：
文献类型：
--
作者：
Iwasaki, Nozomu;Hasegawa, Hiroshi;Tamenori, Yusuke;Kikunaga, Mutsuro;Yoshimura, Toshihiro;Sawai, Hikaru
关键词：
珍贵的珊瑚属于珊瑚科（刺胞珊瑚属，刺珊瑚属），其轴由高镁碳酸钙组成，长期以来一直用于珠宝。珍贵的珊瑚生长速度慢，寿命长，是脆弱海洋生态系统的代表性物种。由于多年的过度捕捞，珊瑚渔业已成为一个有争议的问题。为了估计生长速率并阐明与碳酸盐轴生长相关的微量元素吸收过程，日本红珊瑚（Corallium japonicum）在日本鹿儿岛竹岛135 m深处培养了98个月，并通过显微镜X射线荧光/软X射线光吸收（µ-XRF/XAS）形态映射进行了分析。生长速率估计为0.37毫米/年的直径，并观察到10-11生长轮的轴的横截面。这是首次从日本珍贵珊瑚的原地培养中获得的估计增长率值。在原位培养地点附近的水温波动记录的部分文化时期，然后在生长轮的变化和微量元素的分布在同一时期的珊瑚轴的横截面进行比较。随着水温的升高，生长轮颜色变浅，硫、磷浓度降低，镁浓度升高。相反，当水温降低时，观察到生长轮中的暗带、高硫和磷以及低镁浓度。在珊瑚轴的横截面中，硫和镁的分布从中心到表面分别对应于年生长轮中的暗带和亮带。硫浓度在暗波段高，在亮波段低，而镁与硫呈负相关。
Precious corals belong to the family Coralliidae (Cnidaria, Octocorallia), and their axis, which consists of high magnesian calcium carbonate, has long been used in jewelry. With its low growth rate and long lifespan, precious coral is a representative taxon of the vulnerable marine ecosystem. Due to years of overfishing, coral fishery has become a controversial issue. To estimate the growth rate and clarify the uptake process of trace elements in relation to the growth of the carbonate axis, Japanese red coral (Corallium japonicum) was cultured at a depth of 135 m off Takeshima Island, Kagoshima, Japan for 98 months and analyzed by microscopic X-ray fluorescence/soft X-ray photoabsorption (µ-XRF/XAS) speciation mapping. The growth rate was estimated to be 0.37 mm/year in diameter, and 10–11 growth rings were observed in a cross section of the axis. This estimated growth-rate value is the first ever to be obtained from the in-situ culture of Japanese precious coral. The fluctuation in water temperature near the in-situ-culture site was recorded for part of the culture period and then compared with the changes in the growth ring and the distribution of trace elements in a cross section of the coral axis during the same period. When the water temperature was increasing, the growth ring was light in color, sulfur and phosphorus concentrations were low, and magnesium was high. Conversely, a dark band in the growth ring, high sulfur and phosphorus, and low magnesium concentrations were observed when the water temperature was decreasing. In a cross section of the coral axis, the distribution of sulfur and magnesium from the center to the surface corresponded, respectively, to dark and light bands in the annual growth ring. Sulfur concentration was high in the dark band and low in the light band, while magnesium was negatively correlated with sulfur.
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影响因子：
3.1
作者：
Perrin, Jonathan;Vielzeuf, Daniel;Floquet, Nicole
通讯作者：
Floquet, Nicole
影响因子：
1.2
作者：
Vielzeuf, Daniel;Giordano, Bruna;Floquet, Catherine Nicole
通讯作者：
Floquet, Catherine Nicole
影响因子：
3.9
作者：
Chaabane, S.;Correa, Lopez M.;Montagna, P.
通讯作者：
Montagna, P.
DOI：
10.1016/j.jembe.2013.01.012
发表时间：
2013-03-01
影响因子：
2
作者：
Nguyen Trong Luan;Rahman, M. Azizur;Hasegawa, Hiroshi
通讯作者：
Hasegawa, Hiroshi
影响因子：
2.9
作者：
Vielzeuf, Daniel;Gagnon, Alexander C.;Floquet, Nicole
通讯作者：
Floquet, Nicole