渦虫の一種Bdellocephala brunneaの再生過程における脂肪顆粒などの消長

概要

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The prosperity and decay of lipid granules during regeneration of the Bdellocephala brunnea were studied by means of OsO_4-treatment. (1) In old tissue, lipid granules in regions within 0.3mm proximity to the wounds of the cut-piece disappear with the onset of regeneration, and begin to reappear in the later stages of regeneration. In the median region of the cut-piece, there is no change in the distribution of the granules during regeneration. (2) Lipid granules are not seen in regenerating new tissues, but appear at stages near completion of regeneration. (3) The prosperity and decay of lipid granules in old tissue, as mentioned above, are more rapid in the anterior region than in the posterior one of the piece, as is the case in the level-1 piece and the level-2 piece. (4) In a piece taken from the post-pharyngeal region, in which a tail-like tissue is formed from the anterior end and a short tail from the posterior one, the lipid granules had a scattered distribution compared to a piece taken from the prepharyngeal region. The decay rates of lipid granules in the neighbouring regions of the wounds were also lower than in the level-1 and -2 piece. (5) When the entire worm was kept without food, no remarkable change in the distribution of lipid granules in the body was recognized.
社団法人日本動物学会の論文
1962-06-15