カイコのグレイジングの量的側面への実験によるアプローチ〔英文〕

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タイトル別名
  • AN EXPERIMENTAL APPROACH TO SOME QUANTITATIVE ASPECTS OF GRAZING BY SILKWORMS(BOMBYX MORI)
  • カイコ ノ グレイジング ノ リョウテキ ソクメン エ ノ ジッケン ニ ヨル アプローチ エイブン

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Measurements of how much proportion of ingested or assimilated food in terms of dry matter, caloric content and nitrogen content is converted into larval tissue("conversion efficiencies")and reserved till the pupal stage("reserve ratios")were made with a silkworm population, for the purpose of considering what criterion is most suited to characterize the structure and function of an ecosystem. The silkworm population was supplied sufficiently with fresh mulberry leaves(Morus alba)every six hours, being reared in an experimental room under controlled conditions. The obtained results suggest that the form of the ecological pyramid represented by nitrogen content is clearly different from that represented by biomass or caloric content. A herbivore loses by grazing a less proportion of nitrogen from its tissues as compared with the other two criteria. Reserve ratios are rather preferable to conversion efficiencies as a standard to discuss the values of the coefficients, like efficiency of conversion, of lepidopterous insects together with various kinds of animals, because the lepidopterous larvae, particularly silkworms, make cocoons which are not of protoplasma.

収録刊行物

  • 日本生態学会誌

    日本生態学会誌 18 (5), 217-230, 1968

    一般社団法人 日本生態学会

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