The gastric shield and the underlying epithelium ofChlamys farreri: Morphological, histological and histochemical characterizations

Sheng Xiuzhen; Zhan Wenbin; Shi Ping; Ren Sulian

doi:10.1007/BF02842763

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The gastric shield and the underlying epithelium ofChlamys farreri: Morphological, histological and histochemical characterizations

Updated：2023-05-16

- The gastric shield and the underlying epithelium ofChlamys farreri: Morphological, histological and histochemical characterizations
- Journal of Oceanology and Limnology Vol. 21, Issue 1, Pages: 72-77(2003)
- Affiliations：
  
  1. Fisheries College Ocean University of Qingdao
  2. Aquaculture group limited company of Dalian
- Author bio：
- Funds：
- DOI：10.1007/BF02842763
  CLC：
- Published：2003
- Accepted：
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Xiuzhen, S., Wenbin, Z., Ping, S. et al. The gastric shield and the underlying epithelium ofChlamys farreri: Morphological, histological and histochemical characterizations., Chin. J. Ocean. Limnol. 21, 72–77 (2003). https://doi.org/10.1007/BF02842763
DOI：

Xiuzhen, S., Wenbin, Z., Ping, S. et al. The gastric shield and the underlying epithelium ofChlamys farreri: Morphological, histological and histochemical characterizations., Chin. J. Ocean. Limnol. 21, 72–77 (2003). https://doi.org/10.1007/BF02842763 DOI：

摘要

Abstract

The gastric shield and underlying stomach epithelium ofChlymas farreri were examined at the light and ultrastructural levels. The results showed that the gastric shield consisted of two different size lobes joined together by a narrow middle piece

the thicker lobe was shaped like a funnel

but unclosed at the lateral side; the other lobe was irregularly triangular-shaped. The transverse section of the thicker lobe was obviously laminated and gradually decreased in thickness from the peak to the margins of the shield. The underlying epithelium bore numerous about 3μm diameter spherical processes formed by the apical plasmalemma of the epithelial cells becoming blunt pseudopodia. Microvilli and some interspersed cilia were present in the areas among the spherical processes regions where only microvilli existed. Rough endoplasmic reticulum

Golgi apparatus

different-sized electron-dense secretory granules and electron-lucent vacuoles as well as abundant mitochondria were present in the underlying epithelial cells. Fused droplets of the secretion from the underlying epithelial cells formed the gastric shield.

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references

Cui Longbo, Ma Shengyuan, Liu Ping et al., 1999, Histological and histochemical study on digestive system ofMytilus edulis linnaeus.Journal of Shanghai Fisheries University 8(4): 316–321.

Paul, S. G., 1972. The American oyster.Fishery Bulletin 64: 222–223

Shaw, L., Helen, I. B., 1957. The cross and microscopic anatomy of the digestive tract of the oysterGrassostrea virginica (Gmelin).Can. J. Zool. 35: 325–347.

Thomas, K. A., 1993. The functional morphology of the digestive system ofLyonsia hyalina Conrad, 1831 (Bivalvia: Anomalodesmata: Pandoroidea).J. Molluscan. Stud. 59(2): 175–186.

Zhang, X., Tai, C., 1961. Outlines of Malacology. Science Press, Beijing, China, p. 226–228. (in Chinese)

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