Neuroendocrine Regulation of the Development of Seasonal Morphs in the Asian Comma Butterfly, Polygonia c-aureum L. : Is the Factor Producing Summer Morphs (SMPH) Identical to the Small Prothoracicotropic Hormone (4K-PTTH)? : Endocrinology
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概要
- 論文の詳細を見る
In the butterfly, Polygonia c-aureum L., a physiological mechanism underlying the photoperiodic control of seasonal-morph development involves a summer-morph-producing factor (SMPH). Amounts of SMPH present in the brain-extracts of Polygonia pupae as well as in those of the silkmoth. Bombyx mori, were evaluated by Polygonia pupal assay for SMPH. The factors responsible for SMPH-activity in the Polygonia and Bombyx brain-extracts were heat-stable (95℃ for 5min), but they were thought to be peptide hormones since the brain-extracts became SMPH-inactive by hydrolyzing with trypsin (24hr at 25℃). According to the Sephadex G-50 gel-filtration pattern of SMPH-activity, the ultimate molecular weight of SMPH was though to be 4500, which is almost the same size as the small prothoracicotropic hormone purified from the silkmoth, B. mori (4K-PTTH or bombixin: M. W. 4400). This finding is also supported by evidence in our present study that 2 (out of 4) Sephadex G-50 fractions judged as being SMPH-active showed 4K-PTTH-activity by Papilio pupal assay. However, the factor showing SMPH-activity was not thought to be identical with the one showing 4K-PTTH-activity in P. c-aureum since they were separated by reversed-phase HPLC.
- 社団法人日本動物学会の論文
- 1988-10-15
著者
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Endo Katsuhiko
Biological Institute, Faculty of Science, Yamaguchi University
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Kumagai Kanji
Biological Institute, Faculty of Liberal Arts, Yamaguchi University
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Kumagai K
Biological Institute Faculty Of Liberal Arts Yamaguchi University
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Endo K
Biological Institute Faculty Of Science Yamaguchi University
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ENDO KATSUHIKO
Environmental Biology Laboratory, Institute of Biology, Faculty of Sciences
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Endo Katsuhiko
Institute Of Biological Science Faculty Of Science Yamaguchi University
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MASAKI TADAKATSU
Environmental Biology Laboratory, Biological Institute, Faculty of Science, Yamaguchi University
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Masaki Takakatsu
Environmental Biology Laboratory Institute Of Biology Faculty Of Sciences
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Endo Katsuhiko
Environmental Biology Laboratory Biological Institute Faculty Of Science Yamaguchl University
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