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KMID : 1161520020060010019
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Animal Cells and Systems
2002 Volume.6 No. 1 p.19 ~ p.22
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Life table descriptions of tetrastichus sp. (hymenoptera: Eulophidae) on hyphatria cunea Drury
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Lee Jang-Hoon
Lee Ki-Sang
Lee Hai-Poong
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Abstract
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Life table studies were conducted in the laboratory for the eulophid gregarious pupal parasitoid, Tetrastichus sp., on Hyphantria cunea Drury at a constant temperature of 28.2±2°C, 50?60% RH to evaluate their impact on the host and their potential biological control. Development of immature stage took 20.1±2.7 d; adult females lived for 23.2±2.2 (range, 16?27) d and produced a mean of 53.6±26.6 adult progeny per female, with a sex ratio of 1: 9.5 (M:F). The intrinsic rate of natural increase (rm) was 0.178/ female/day; the net reproductive rate (R0 ), 46.74; the capacity for increase (rc) 0.177; the finite rate of increase (λ) 1.195/female/day; thus each female contributed 46.74 individuals to the population in a mean generation time of 21.6 d. Biological factors in determining the life history trait variation of the parasitoid were discussed.
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KEYWORD
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Tetrastichus sp. life table, Net reproductive rate, Capacity for increase, Finite rate of increase, Intrinsic rate of natural increase
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