The Gastric Shield and the Underlying Epithelium of Chlamys Farreri:Morphological, Histological and Histochemical Characterizations |
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引用本文: | 绳秀珍,战文斌,史平,任素莲. The Gastric Shield and the Underlying Epithelium of Chlamys Farreri:Morphological, Histological and Histochemical Characterizations[J]. 中国海洋湖沼学报, 2003, 21(1) |
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作者姓名: | 绳秀珍 战文斌 史平 任素莲 |
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作者单位: | Fisheries College Ocean University of Qingdao,Fisheries College Ocean University of Qingdao,Aquaculture group limited company of Dalian,Fisheries College Qingdao 266003,China,Qingdao 266003,China,Dalian 116023,China,Ocean University of Qingdao,Qingdao 266003,China |
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基金项目: | ThisworkwassupportedbytheNaturalScienceFundofShandongProvince (Y98D1 4 0 62 ) . |
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摘 要: | Bivalveshavetranslucentthinmembranes—thegastricshieldcoversontheleftoftheposteriorstomachwalls;theheadofthecrystallinestylehousedinthestyle sacisrotatedforwardintothestomachtoimpingethefoodonthegastricshield (ZhangandTai,1 961 ) .Itwasreportedthatthegastric…
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The Gastric Shield and the Underlying Epithelium of Chlamys Farreri: Morphological, Histological and Histochemical Characterizations |
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Abstract: | The gastric shield and underlying stomach epithelium of Chlymas farreri were exam-ined at the light and ultrastructural levels. The results showed that the gastric shield consisted of twodifferent size lobes joined together by a narrow middle piece, the thicker lobe was shaped like afunnel, but unclosed at the lateral side; the other lobe was irregularly triangular-shaped. The trans-verse section of the thicker lobe was obviously laminated and gradually decreased in thickness fromthe peak to the margins of the shield. The underlying epithelium bore numerous about 3μm diameterspherical processes formed by the apical plasmalemma of the epithelial cells becoming blunt pseud-opodia. Microvilli and some interspersed cilia were present in the areas among the spherical pro-cesses regions where only microvilli existed. Rough endoplasmic reticulum, Golgi apparatus, differ-ent-sized electron-dense secretory granules and electron-lucent vacuoles as well as abundant mito-chondria were present in the underlying epithelial cells. Fused droplets of the secretion from the un-derlying epithelial cells formed the gastric shield. |
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Keywords: | C. farreri morphology histology histochemistry ultrastructure |
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