• Korean journal of applied entomology
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• v.60 no.2
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• pp.201-202
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• 2021

We confirmed the convenient bioassay method for the black cutworm, Agrotis ipsilon in semi-field conditions. And we surveyed the susceptibility to commercial pesticides of A. ipsilon, which feeds Chinese cabbage through this bioassay process. As a result of the test, six soil mixing insecticides and eight soil drenching insecticides showed more than 90% insecticidal activity.

• Korean journal of applied entomology
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• v.61 no.2
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• pp.313-318
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• 2022

In this study, the genus Cameraria Chapman, 1902 belonging to the family Gracillariidae is reported for the first time from Korea, with three newly recorded species, Cameraria acericola Kumata, 1963, C. hikosanensis Kumata, 1963 and C. niphonica Kumata, 1963. All the known Korean species are enumerated with their available information. Adults and genitalia of all species are redescribed and illustrated.

• Korean journal of applied entomology
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• v.61 no.3
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• pp.497-502
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• 2022

The genus Ippa Walker, 1864 is reported for the first time from Korea, with a species I. conspersa (Matsumura, 1931). I. conspersa is generally known as myrmecophiles having ecological relationships with some ant species such as Lasius spp. Photographs of adults, immature stages, and the genitalia of I. conspersa are provided.

• Korean journal of applied entomology
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• v.62 no.2
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• pp.89-93
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• 2023

This paper reports new hosts for three ichneumonids (Apophua evanescens evanescens, Teleutaea minamikawai, and Trathala flavoorbitalis) from South Korea. These three species were discovered from the lepidopteran pupae, viz., Cleora leucophaea (Butler) (Geometridae), Adoxophyes honmai Yasuda (Tortricidae), and Pyrausta phoenicealis (Hübner) (Crambidae), respectively. Among these, the lepidopteran family Geometridae and Crambidae are also newly recorded as host groups for the genera Apophua and Trathala.

• Journal of Mushroom
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• v.2 no.3
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• pp.149-156
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• 2004

This study was carried out to obtain basic data on physiological characteristics for an artificial cultivation of fruiting body of Cordyceps. Specimens such as Cordyceps longissima, C. militaris and C. pruinosa were collected at Mt. Halla of Cheju island in July, 2003. Among four different culture media which have been used for culture of mushrooms, MCM medium was selected for the favorable culture medium of the Cordyceps tested. The initial pH of solid medium for mycelial growth of Cordyceps was good in the range of pH 5.0~7.0 lower than 8.0. The mycelial growth of C. longissima was most favorable on culture media supplemented with glucose, one of monosaccharides. In C. militaris, nine carbon sources were favorable to the mycelial growth as compared with control among 11 carbon sources. Six nitrogen sources were favorable to the mycelial growth of C. longissima as compared with control among 9 carbon sources; namely, the mycelial growth of C. longissima was most favorable on culture media contained potassium nitrate, and followed in order by ammonium citrate and sodium nitrate in 4 weeks incubation.

• Analytical Science and Technology
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• v.28 no.3
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• pp.175-181
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• 2015

Cyantraniliprole, which is an ananthranilic diamide insecticide that was developed by the DuPont Corporation, was registered in the Republic of Korea in 2012. It offers exceptional insecticidal activity on a broad range of Lepidopera, Coleoptera, Diptera, and Isoptera. The maximum residue limits are set to pepper, peach, apple, sweet pepper, welsh onion, and so on (0.2~2.0 mg/kg). Therefore, an analytical method for determining cyantraniliprole residue in agricultural products was developed to ensure food safety. In previous studies, welsh onions were among vegetables included in the allium species, which is a representative plant with sulfur organic compounds. In this study, the analytical method was developed and evaluated for the elimination of sulfur compounds from the test solution of allium species during pesticide residue analysis. In order to inactivate the enzyme allinase and produce sulfur compounds, sample extraction was made in the base state pH 10 by reducing the activity of the enzyme. The recoveries of the developed method ranged from 81.9% to 83.2%, and the relative standard deviations were less than 10%. Therefore, based on the results, the method developed in this study is accurate and appropriate for use in cyantraniliprole determination. It will be used as the official method for managing the safety of cyantraniliprole residues in agricultural products.

• Applied Biological Chemistry
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• v.19 no.4
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• pp.189-201
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• 1976

In an effort to develop a microbial in secticide, B. thdringiensis var. thuringiensis was cultured in the medium composed of cocoon-cooked water from a filature. The results obtained are summarized as followss : (1) Bacillus thuringiensis is a bacterium producing a ${\delta}-endotoxin$ especially toxic to lepidopterous insects and a thermostable exotoxin harmful to dipterous insects. (2) With a view to utilizing the cocoon-cooked water discarded from the filature, as a nutrient source in the B. thuingiensis culture, it was analyzed to contain large amounts of various minerals and protein (7.5 mg/ml) believed to be extracted from the pupae. (3) A large amount of the ${\delta}-endotoxin$ can be obtained most cheeply by using cocoon-cooked water instead of distilled water in preparing GYS and citrate salts media. (4) The largest amount of a mixture of the vegetative cells, spores, and crystals was obtained by addition of 8 gr/l of glucose to the GYS medium. (5) The growth of the bacterium was far better, when leucine, isoleucine, and valine were added all together to the citrate salts medium to the concentration of $1.25{\times}10^{-3}M$. (6) The best growth was observed by addition of Na-glutamate to the citrate salts medium to the concentration of $2.5{\times}10^{-3}M$. (7) The optimal culture time ranged from 9 to 15 days. (8) The highest mortality was shown in Pieris rapae Linne with a pH of the total body extract of 8.4, whereas Dendrolimus spectabilis Butler and Bombyx mori Linne with lower pH's were less susceptible to the ${\delta}-endotoxin$. (9) The presence of the thermo stable exotoxin was confirmed by the fact that the supernatant of the culture was very toxic to the Drosophila melanogaster tested.

• Korean Journal of Environment and Ecology
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• v.34 no.2
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• pp.130-141
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• 2020

National parks in Korea are subject to a survey of natural resources every five years, according to the Natural Parks Act. This study analyzed the insect diversity in each of the 21 national parks conducted as part of the Third Nature Resource Survey of National Parks (2010~2018). It compared insect diversity in each national park national biodiversity with insect diversity in all national parks and analyzed the uncollected sub-taxonomic groups of each taxonomic group and the legally protected species. The Third Nature Resource Survey identified 5,584 species in 456 families in 21 orders in all national parks, and they accounted for 31.3% of 17,848 species in the national insect diversity. By taxonomic group, Lepidoptera was the most frequently found with 2,195 species, followed by beetles (1,495 species), fellings (712 species), and stink bugs (515 species). By national park, Odaesan national park showed the highest insect diversity with 1,963 species, followed by Sobeaksan national park (1,511), Hanryeohaesang national park (1,321), Gayasan national park (1,282), Juwangsan national park (1,265), Dadohaehaesang national park (1,264), Woraksan national park (1,251), and Jirisan national park (1,240). The legally protected species included 3 species of endangered species rank I, 11 species of endangered species rank II, 12 climate change indicator species, 139 endemic species, and 532 species requiring approval for cross-border transfer.

• Clinical and Experimental Pediatrics
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• v.50 no.1
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• pp.74-78
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• 2007

Purpose : Systemic lupus erythematosus (SLE) is a chronic multisystemic autoimmune disease with complex clinical manifestations. It probably involves genetic, environmental and immunologic factors. In this study, we investigated the clinical manifestations, laboratory findings and prognosis of pediatric SLE to aid clinical care of pediatric SLE. Methods : The data of 45 patients who were diagnosed as pediatric SLE in Severance Children's Hospital from Jan. 1996 to Dec. 2005 were analysed retrospectively. Results : The mean age at diagnosis was 10.8 (0-15) years old. And the ratio of male to female patients was 1:4. The initial manifestations were facial edema (51.1 percent), malar rash (44.4 percent), and fever (28.9 percent). The ANA (97.8 percent), anti-ds DNA antibody (82.2 percent), lupus nephritis (71.1 percent), malar rash (71.1 percent), and cytopenia (66.7 percent) were the most common findings among the classification criteria by ACR (American College of Rhematology, 1997). Conclusion : Clinical manifestations and prognosis are various in pediatric SLE. Intensive studies of SLE in children should be continued for more effective treatment.

• Journal of Forest and Environmental Science
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• v.21 no.1
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• pp.66-74
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• 2005

This study investigated to distribute of Lepidoptera on the forest stands of central Ganwon area from July to August in 2004. Collected species in the study area were 570 individuals, 162 speices, 14 family. The number of collected species was 149 didivisuals, 69 species, 12 family in the Hangyeri and 58 individuals 22 speices 6 family in the Jinburi. Dominant species were Dendrolimus superans 40 individuals, Ampelophaga rubiginosa 32 individuals, Dolbina exacta 27 individuals, Oberthueria caeca 26 individuals, Dudusa sphigiformis 23 individuals. Shannon species diversity index(H') and Evenness index(J') were 1.34, 0.86 in the Bongmyeungri, 1.48, 0.89 in the Garniungri, 1.77, 0.94 in the Hangyeri. 1.53, 0.93 in the Youngdaeri, 1.56, 0.94 Guidunri, 1.15, 0.83 in the Jinburi, respectively. Community similarity index(QS) showed the lowest value in the Jinburi and Guidunri as 0.11, the highest value in the Youngdaeri and Hyngyeri as 0.38.