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作者采用多种组织化学方法及等离子光谱技术 ,研究了不同环境钙浓度对淡水育珠蚌钙代谢的影响 .发现与对照组 (钙浓度约 10 g/m3)相比 ,较高钙浓度 (2 0～ 30 g/m3)条件下三角帆蚌外套膜组织钙含量增加 ,外套膜内外表皮和珍珠囊上皮细胞的分泌活动旺盛 ;与之相反 ,高钙浓度条件下 (30 g/m3以上 ) ,蚌外套膜组织钙含量降低 ,外套膜内外表皮和珍珠囊上皮细胞的分泌活动下降 .这表明环境中适宜的钙浓度可促进蚌对钙质的吸收、贮藏以及细胞旺盛的分泌活动 ,而过高和过低的钙浓度会对蚌外套膜的钙代谢活动产生抑制作用 ,从而影响到珍珠和贝壳的正常生长 .作者探讨了育珠蚌外套膜和珍珠囊钙的代谢机制 ,期望能进一步阐明影响珍珠和贝壳形成的因素 ,为珍珠养殖业中如何改善养殖水体环境提供参考资料和理论依据
The authors used various histochemical methods and plasma spectroscopy techniques to study the effects of calcium concentrations in different environments on the calcium metabolism in freshwater pearl mussels. Compared with the control group (calcium concentration about 10 g / m3), the higher calcium concentrations (2 Under the conditions of high calcium concentration (30 g / m3 and above), the calcium content in the mantle tissue of the Hyriopsis cumingii increased and the secretions of epidermis and pearl sac epithelial cells in the outer mantle increased. Muscovasculature decreased the calcium content in the outer muscovasculature and decreased the secretion activity of the outer and inner epidermis of the mantle and the pearl sac epithelial cells.This indicated that the appropriate calcium concentration in the environment could promote the absorption and storage of calcium and the exuberant secretory activity of the mussel, And low calcium concentration will inhibit muscovigram calcium metabolism activity of mussels, thus affecting the normal growth of pearl and shellfish.The author explores the metabolic mechanism of mantle mussel and pearl capsule calcium in pearl mussel, expecting to further clarify the impact Pearl and shellfish forming factors for the pearl aquaculture industry to improve aquaculture water environment to provide reference and theoretical basis