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KMID : 0364219690120040109
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Korean Journal of Zoology
1969 Volume.12 No. 4 p.109 ~ p.113
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Relationships between the Host and it's Natural Enemy Introduced into a New Ecosystem 2. Effect of Ingestion by Podisus maculiventris Say on the Prey Size of Hyphantria cunea Drury
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Kim Chang-Whan
Noh Yong-Tai
Chung Young-Wha
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Abstract
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Exeriments were carried out to determine the effect of age on the functional response of the predator, Podisus maculiventris reared on the different prey size of Hyphantria cunea in simple vial, twice at the 1st and 2nd generations of Hyphantria cunea. 1. Larvae ingested about 11.23, 18.4 and 20.7mg for each diet level (cf, table 1 to 3)in 2nd instar, 12.3, 23.37 and 28.3mg in 3rd instar, 18.17, 40.3 and 42.7mg in 4th instar, 51.7, 92.7 and 130.2mg in 5th instar for each diet level. 2. Adult males ingested about 528, 740, 545.1mg and females about 516.5, 627.5, 603.3mg in their whole life for each diet level. 3. The relationship between observed and predicted values, established by regression analysis was revealed as 0.80 to 0.91 in correlation coefficient.
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