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KMID : 1161519990030040369
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Animal Cells and Systems
1999 Volume.3 No. 4 p.369 ~ p.374
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Morphology and development of Tetrastichus sp. (Hymenoptera: Eulophidae), parasitizing fallwebworm pupae, Hyphantria cunea Drury (Lepidoptera: Arctiidae)
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Lee Hai-Poong
Kim Il-Kwon
Lee Ki-Sang
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Abstract
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The life history and development of Tetrastichus sp. parasitizing fallwebworm pupa in Korea were studied. The mean lifetime fecundity was 94.7 with a maximum of 125, and the portion of female progeny averaged 90.3%. A male and a female lived for an average of 19.8±4.5 and 21.7±4.2 days, respectively. The duration of development for each stage was as follows: egg, 2 d; the 1st instar larva, 2±1 d; the 2nd instar larva, 2±1 d; the 3rd instar larva, 3±1 d; the 4th instar larva, 6±2 d; and pupa, 8±2 d. Total developmental duration from hatching of the larva to adult emergence required 21.1±3.7 d, and females took 1?2 days more than males in the incubator (28°C, 70% RH, and 16:8 LD).
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KEYWORD
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Tetrastichus sp., Fecundity, Sex ratio, Development, Hyphantria cunea, Eulophidae
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