Tsukano Kenji, Suzuki Kazuyuki, Noda Jun, Yanagisawa Makio, Kameda Kazunari, Sera Koichiro, Nishi Yasunobu, Shimamori Toshio, Morimoto Yasuyo, Yokota Hiroshi, Asakawa Mitsuhiko
School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan.
Ocean Expo Research Center, 888 Ishikawa, Motobu-cho, Kunigami-gun, Okinawa 905-0206, Japan.
J Vet Med Sci. 2017 Dec 22;79(12):2043-2047. doi: 10.1292/jvms.16-0652. Epub 2017 Oct 25.
The purpose of this study was to compare the concentration of trace elements in the plasma of sea turtles that inhabited the suburban (Okinawa Main Island, n=8) and the rural coast (Yaeyama Island, n=57) in Okinawa, Japan. Particle induced X-ray emission allowed detection of 20 trace and major elements. The wild sea turtles in the suburban coast in Okinawa were found to have high concentrations of Pb, Si and Ti in the plasma when compared to the rural area but there were no significant changes in the Al, As and Hg concentrations. These results may help to suggest the status of some elements in a marine environment. Further, monitoring the plasma trace and major element status in sea turtles can be used as a bio-monitoring approach by which specific types of elements found here could indicate effects that are related to human activities.
本研究的目的是比较生活在日本冲绳郊区（冲绳本岛，n = 8）和农村海岸（八重山群岛，n = 57）的海龟血浆中微量元素的浓度。粒子诱导X射线发射可检测20种微量元素和常量元素。与农村地区相比，发现冲绳郊区海岸的野生海龟血浆中铅、硅和钛的浓度较高，但铝、砷和汞的浓度没有显著变化。这些结果可能有助于揭示海洋环境中某些元素的状况。此外，监测海龟血浆中微量元素和常量元素的状况可作为一种生物监测方法，据此发现的特定类型元素可能表明与人类活动相关的影响。
