ナミウズムシ Dugesia japonica の再生に及ぼす移植尾部片の影響
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概要
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The transplantation of tail grafts into the prepharyngeal regions in Dugesia japonica was performed, followed (1) by severance posterior to the grafts, or (2) by the isolation of fragments of the hosts just posterior to the grafts, after various periods of time. (1). The posterior cut ends 0.5mm posterior to the grafts, when severed immediately after the transplantation, formed heads in about half of the cases. The more days that elapsed after the transplantation, the larger the rate of head formation grew. This phenomenon was also observed in the case of severance 1.0mm posterior to the grafts after 4 days. (2). The fragments 0.5mm in length isolated within 2 days after transsplantation regenerated either into normal animals or into bipolar heads, but after 3 days most of the fragments reversed original polarity and formed heads from the posterior cut ends and tails from the anterior ones. The fragments 1.5mm in length isolated within 2 days showed normal regeneration, but the ones isolated after 3 days regenerated into bipolar tails. The phenomena observed in these experiments are discussed.
- 社団法人日本動物学会の論文
- 1979-03-25