Change in Glycogen Level in the Oyster Eggs during Development(Developmental Biology)
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概要
- 論文の詳細を見る
In eggs and embryos of the oyster, Crassostrea gigas, changes in the glycogen level and the respiratory rate during early development were estimated as a trial to identify the main fuel for their respiration. In un fertilized eggs, which exhibited almost the same respiratory rate as in fertilized eggs, a slight decrease in glycogen level, which corresponded to about 30% of oxygen utilized by their respiration, occurred during an incubation at 20℃ for 10 hr. In fertilized eggs, a marked increase in the respiratory rate followed by its less steep elevation occurred during initial 10 hr after fertilization. In this period of development, the amount of oxygen necessary for oxidation of utilized glycogen was about 80-90% of the amount of consumed oxygen. In the following 5 hr period, the respiratory rate was markedly enhanced and the utilized glycogen corresponded in its amount to 70% of oxygen consumed by the respiration of the embryos. In fertilized eggs and embryos, glycogen is probably the main energy reserve but is not in un fertilized eggs. In anoxia, a decrease in glycogen level, accompanied by lactate increase, occurred in un fertilized eggs in a similar manner as in fertilized eggs and an exposure of these eggs, having kept in anoxia, to oxygen allows the eggs to cause an increase in glycogen level at the expense of lactate. Latent capacities of utilization and synthesis of glycogen in un fertilized eggs are probably almost the same as in fertilized eggs.
- 社団法人日本動物学会の論文
- 1985-06-15
著者
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Fujiwara Akiko
Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima Uni
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Fujiwara A
Kanagawa Univ. Kanagawa Jpn
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Fujiwara A
Department Of Biology School Of Education Waseda University
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Fujiwara Akiko
Department Of Applied Microbiology Nippon Roche Research Center
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Yasumasu Ikuo
Department of Biology, School of Education, Waseda University
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Yasumasu I
Department Of Biology School Of Education Waseda University
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Yasumasu Ikuo
Department Of Biology Colege Of General Education University Of Tokyo
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Tazawa Eigoro
Biological Institute, Faculty of Science, Yokohama City University
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Tazawa E
Kanagawa Univ. Kanagawa Jpn
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Tazawa Eigoro
Biological Institute Faculty Of Literature And Science Yokohama City University
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