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KMID : 0364219690120020060
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Korean Journal of Zoology
1969 Volume.12 No. 2 p.60 ~ p.66
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Changes in Hemolymph Protein Concentration and Oxygen Consumption during the Metamorphosis in pieris rapae L.
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Kim Chang-Whan
Lee Kyung-Ro
Kim Hak-Ryul
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Abstract
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Changes in the protein concentration in the hemolymph and the oxidation of respiratory substrates at various developmental stages in cabbage worm, Pieris rapae Linne were measured using Biuret method and Warburg manometric method, respectively. The results are summarized as follows: 1. The hemolymph protein contentration decreased gradually until the six-day pupa and increased thereafter. In the fifth larval instar the concentration reached a maximum and was about two times the value for the six-day pupa. 2. Endogenous respiration was very high at the prepupal stage, decreasing at two-day pupa, followed by an increase at the late pupal stage. 3. Glucose showed the marked activity throughout the whole stages, and had the striking influence on both the prepupal and adult stages. 4. The changes in protein concentration and the rate of oxygen consumption exhibited a general pattern of U-shaped curve through the process of life cycle according to histogenesis of the adult organ and histolysis of the larval organ.
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