The First Observation of 3-Dimensional Motion and Twist in Sperm Flagella of the Stag Beetle Prosopocoilus inclinates

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概要

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• We discovered the 3-dimensional twist motion of sperm flagella of the stag beetle Prosopocoilus inclinates. The morphological features are discussed with experimental data obtained through various 'imaging techniques' including those developed in thermo-nuclear fusion research. The helical deformation length observed in the optical micrograph agreed statistically with those of transmission electron micrographs (TEM) on both ultra-thin section and negatively stained samples. This indicated that the helical twist mechanism of flagellar axoneme could be safely discussed from TEM. In order to elucidate this, we applied the newly developed Constrained Electron Beam Tomography (CEBT) technique adapted from our unique fusion plasma diagnosis. This requires basic assumptions of "the optimum deformation" and "the coherent length" as mathematical constraints. The results are the key parameters of the flagellum deformation, e.g. the helical pitch (HP) of both axoneme and mitochondrial derivatives as well as the phase slip (PS) between them. They allow the quantitative discussion on this motion.

• 社団法人 プラズマ・核融合学会の論文

著者

• Mohri Hideo

  National Institute for Basic Biology

• Irie Masaru

  Waseda University

• KUBO-IRIE Miyoko

  University of Air, Chiba 261-8586, Japan

• MOHRI Hideo

  National Institute for Basic Biology, Okazaki 444-8585, Japan & University of Tokyo, Komaba 113-0033, Japan

• IRIE Masaru

  Waseda University, Tokyo 169-8555, Japan

関連論文

• MOLECULAR PHYLOGENY OF THE JAPANESE BUTTERFLIES (INSECTA, LEPIDOPTERA)(Taxonomy and Systematics,Abstracts of papers presented at the 74^ Annual Meeting of the Zoological Society of Japan)
• ULTRASTRUCTURAL CHANGE OF THE TREE-FROG SPERMATOZOA IN THE FOAM NEST(Developmental Biology,Abstracts of papers presented at the 76^ Annual Meeting of the Zoological Society of Japan)
• Tubulin 30 Years Later
• The First Observation of 3-Dimensional Motion and Twist in Sperm Flagella of the Stag Beetle Prosopocoilus inclinates

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