仔魚の消化管の比較研究-I : アユ仔魚の腸管上皮の微細構造

概要

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The fine structure and possible function of gut epithelial cells in 1-day larvae of Plecoglossus altivelis were studied. In the middle and posterior portions of the gut, the epithelium is composed of columnar cells with microvilli intermingled with ciliated cells. Ciliary movements are visible in the posterior half of the gut and become vigorous posteriorly. Ciliated cells presumably play not only a food-conveying role but also a faeces-eliminating role. The cilia show the structural uniformity of the peculiar “9+2” pattern of fibers. The microvilli in the non-ciliated columnar cells are virtually the same in structure as the striated border of the intestinal absorptive cells, and pinocytotic vesicles occur at the bases of the intermicrovillous spaces. The structural evidence of these microvillous cells suggests the possibility of absorptive function.
公益社団法人日本水産学会の論文