バフンウニの体格部のカルシウム含量〔バフンウニのカルシウム代謝に関する研究-4-〕

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To study the calcification of sea urchin, calcium level of each part (coelomic fluid, gut, gonad, lantern, tooth and test) was examined in Hemicentrotus pulcherrimus. Calcium level of coelomic fluid (0.54mg/ml) was higher than sea water (0.41mg/ml) by about 30%. Test, lantern and tooth, which were calcified tissues, showed much higher level than gut and gonad. Relative content of calcium of calcified tissues was about 99.8% to the whole body. In the test, the highest level of calcium was observed in the area between the anus and the equator (339.8mg/g). Second highest areas were observed around the anus (298.0mg/g) and along teh equator (283.3mg/g), and the lowest area was found around the mouth (214.4mg/g), showing that calcium levels of the test varied with the different areas.
日本水産學會の論文