褶纹冠蚌光珠与骨珠珍珠囊差异的研究
DIFFERENCE OF NACREOUS AND PRISMATIC PEARLSACS IN THE FRESHWATER PEARL MUSSEL CRISTARIA PLICATA
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摘要: 运用多种组织化学方法和电镜技术研究了褶纹冠蚌光珠和骨珠珍珠囊表皮细胞的形态结构、分泌物性质和功能等方面的差异.结果表明:骨珠珍珠囊表皮细胞合成和分泌珍珠前体物质的能力较光珠的强,故骨珠的形成速度比光珠快;光珠和骨珠珍珠囊表皮细胞合成和分泌的蛋白质的差异决定了光珠和骨珠的形成;光珠和骨珠珍珠囊表皮细胞的形态结构特征差异可作为检验和预测人工培育珍珠质量的细胞学标准.Abstract: The mechanism of the formation of different CaCO3 crystal types by nasreous and prismatic peari-sacs of freshwater pear mussel Cristaria plicata was studied with various histochemical methods and electron microscope techniques. The prismatic pearls formed much faster than nacreous ones, because prismatic pearl-sac epithelial cells can synthesize and secret more precursors of pearl than those of nacreous pearl-sac. The proteins secreted by pearl-sac epithelial cells are tightly relevant to the crystal type of pearl, which may result in the formation of nacreous and prismatic pearls, The pearl-sac epithelial cells of nacreous and prismatic pearls have different morphological features which can be used as the cytological standard to foretell and check the quality of the formed pearl.
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Keywords:
- Cristaria plicata /
- Prismatic pearl /
- Nacreous pearl /
- Pearl-sac
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