Some Aspects of a Model Ecosystem Fate of Carbon, Nitrogen and Phosphorus in a Model Ecosystem

スポンサーリンク

概要

• 論文の詳細を見る

• The model ecosystem devised by METCALF et al. (1971) was modified slightly by changing organisms associated with the food chains to fit the local conditions, and the fate of metabolic constituents of organisms in the modified model ecosystem was examined. Sweet-potato leaves labeled with ^<14>C and ^<15>N were fed to tobacco cutworm larvae, and the distribution of ^<14>C and ^<15>N in the organisms was examined. At the end of the experiment, ^<14>C concentration per mg fresh weight in the organisms was lower than that in the aquarium water. In spite of the short exposure time to the aquarium water, ^<14>C concentration of water-soluble and ether-soluble fractions in fish was higher than that in the other organisms. Concentration of ^<14>C in the ether-soluble fraction of the fish and snail was much higher than that in algae, suggesting that there is an intrinsic difference between animals and plants in the metabolism of lipid and related materials as a reservior of persistent and lipid-soluble chemicals. Incorporation of ^<15>N into the 80% aqueous alcohol-insoluble fraction of the organisms was low, in descending order of snail, algae and fish. When insect larvar were fed with ^<32>P-labeled sweet-potato leaves, the distribution of ^<32>P was highest in the algae, followed by the snail and fish. The results of fractionation of ^<32>P-labeled metabolites in the organisms showed that the incorporation rate of ^<32>P into trichloroacetic acid-soluble, lipid, nucleic acid and protein fractions was different among the organisms, and that ^<32>P concentration per mg phosphours in the snail was high as compared with that in the other organisms. It was suggested that there is large variety in the magnitude of metabolic pool of the three elements among the organisms. It was probable that the three elements show different behaviours in the model ecosystem.

• 日本応用動物昆虫学会の論文
• 1977-03-25

著者

• Kazano Hikaru

  National Institute Of Agricultural Sciences

• 風野 光

  National Institute of Agricultural Sciences

• TOMIZAWA Chojiro

  National Institute of Agricultural Sciences

• 富沢 長次郎

  National Institute of Agricultural Sciences

関連論文

• 揮発性物質のためのモデル生態系の改良とカルバリルと p, p′-DDT への応用
• カーバメート系殺虫剤のツマグロヨコバイおよびヒメトビウンカにおける代謝
• Some Aspects of a Model Ecosystem Fate of Carbon, Nitrogen and Phosphorus in a Model Ecosystem
• プロパホスのツマグロヨコバイとハスモンヨトウに対する殺虫選択性の機構
• Absorption and Degradation of Propoxur in Susceptible and Resistant Green Rice Leafhoppers : Nephotettix cincticeps UHLER (Homoptera : Cicadellidae)
• Metabolism of Fenothiocarb Acaricide in the Citrus Red Mite (Acarina : Tetranychidae)

スポンサーリンク