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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean journal of applied entomology
Journal Basic Information
Journal DOI :
Korean Society of Applied Entomology
Editor in Chief :
Volume & Issues
Volume 30, Issue 4 - Dec 1991
Volume 30, Issue 3 - Sep 1991
Volume 30, Issue 2 - Jun 1991
Volume 30, Issue 1 - Mar 1991
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Laboratory Evaluation of Entomopathogenic Nematodes, Steinernema carpocapsae and Heterorhabditis bacteriophora against Some Forest Insect Pests
;Harry K. Kaya;;;;
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 227~232
The pathogenicity of entomopathogenic nematodes Sfeinernema earpocapsae and Heferorhabditis baeferiophora was evaluated against forest insect pests, alder leaf beetle Agelastiea eoerulea, pellucid zygaenid Pryeria siniea, and box-tree pyralid Glyphodes perspeetalis. Alder leaf beetle larvae were exposed to S. earpocapsae at concentration of 0, 25, 50, and 100 nematodes and to H. baeferiophora at concentration of 0, 10, 20, and 40 nematodes per larva on alder leaves. Mortalities of 1st instar lavae were 85.4
4.1-100%, 2nd instar larvae 80.0
5.8-100%, and 3rd instar larvae 65.0
10.8-100% in S. earpocapsae and those of 1st instar larvae were 82.5
6.9-100%, 2nd instar larvae 77.5
4.7-100%, and 3rd instar larvae 55.0
13.5-100% in H. baeferiophora treatment. When pellucid zygaenid larvae were exposed to S. earpocapsae at concentration of 0, 5, 10, 20, 40, and 80 nematodes and to H. baeteriophora at concentration of 0, 2, 5, 10,20, and 40 nematodes per larva, mortalities were 98.9
1.1-100% in S. earpocapsae and 26.7
6.2% in H. baeferiophora. The mortalities of box-tree pyralid larvae were 97.8
1.5-100% in S. earpocapsae treated with concentration of 0,20,40, and 80 nematodes per larva and those were 92.0
1.1 % in H. baeferiophora treated with con'||'&'||'not;centration of 0, 10, 20, and 40 nematodes per larva.
Factors Influencing the Host Discrimination by Brachymeria lasus (Walker) (Hymenoptera: Chalcididae)
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 233~240
A female Brachymeria lasus (Walker) was exposed to one or four pupae of host Hyphantria cunea Drury for 20 minutes within a petri dish
to learn factors influencing the host discrimination by the parasitoid. It rejected the parasitized host with its rejection ratio 73.3% for the one pupal exposure vs 100% for the four pupal exposure scheme. The parasitoid could discriminate the parasitized host by its antennal drumming and ovipositor probing due to a pheromone-like external marking which is effective only for a certain peiod of time, and a host quality associated with the parasitoid development, respectively.
Three Unrecorded Species of Tylenchidae in Korea
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 241~248
During the study on nematodes associated with medicinal berbs, three species of Tylenchidae, Ditylenchus citri, D. equalis and Psilenchus iranicus were firstly recorded in Korea. AS these species are not common a short description is presented.
Changes in the Occurrence Pattern of the Striped Rice Borer, Chilo suppressalis Walker, in Korea
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 249~257
Chronological changes in the occurrence pattern of the striped rice borer(SRB), Chilo suppressalis Walker, were investigated by analyzing the data collected by 33 light traps of the countrywide monitoring units during the period of 1968-1989. And also relation of incidences between larval and adult populations, emergence time and percent emergence of overwintered larvae were observed in relation to the time of different rice transplantations. Spring moths of SRB in 1985-'89 generally emerged earlier than in 1968-'72 : 30 days earlier at Kwangju, 20 -25 days earlier at Sangju and Naju, 10-15 days earlier at Uljin, Jinju, Goyang, Milyang, Kimhae, etc., 5 days earlier at Suweon, Jinchun, Daejeon, Namweon, Haenam, etc. There was no change in the time of spring moth emergance at Weonseong, Chungju, Seosan, Yongju, and Nonsan. Summer moths of SRB in 1985- '89 also emerged earlier than 1968- '72: 20 days earlier at Uljin, 15 days earlier at Chungju, Yeongdug, and Habchun, 5-10 days earlier at the other areas except Yeongju. There was an overall countrywide decrease in the population of the 1st generation of SRB during the last two decades. The population of the 2nd generation also decreased in 19 areas during the same period, but increased in 14 areas including over 3-fold increases in Kwangju, Naju and Daegu, and double increase in Jinju, Milyang and Gongju. The higher larval population density of 1st genration was taken place in the earlier transplanted fields, whereas the population of 2nd generation were higher at mid-season transplanted (May 30), followed by May 15, June 15, and April 30. The peak of larval population appeared generally 15 days after moth peak in 1st generation, and 10 days after moth-peak in 2nd generation. The earlier transplanted fields were the higher percent damage due to 1st off-springs of spring moths, whereas the fields transplanted in mid-season were higher damage due to 2nd off-springs of summer moths. Average body weights of SRB larvae before overwintering were 65.6 mg, 61.2 mg, and 55.5 mg in early, mid-season, and late transplantations, respectively. In field cage experiments, emergence rate of the overwintered larvae ranged from 28.3-39.8%. In other words, body weights of overwintering larvae were heavier in fields by earlier transplantation, and heavier larvae showed higher percentage of adult emergence. The period from overwintered larvae to adult emergence was longer in the fields of the later transplantations; namely, 44, 49, and 51 days for early, mid-season, and late transplantations, respectively.
Effects of Juvenile Hormone and Molting Hormone on Diapausing Adults of the Alder Leaf Beetle, Agelastica coerulea Baly
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 258~264
Studies were carried out to investigate effects of temperature and photoperiod on diapause induction and of juvenile hormone III and 20-hydroxyecdysone treatment on diapausing adults of the alder leaf beetle, Agelastica coerulea Baly(Chrγsomelidae: Coleoptera). Its life cycle and ovarian development in adults were also observed. The beetle had one year life cycle with egg, larval, pupal and adult periods being 7-10, 19-21, 14-15 days and about 10 months, r respectively. All adults showed a diapause syndrome when the larvae were reared at
in combination of photoperiods of 16L/8D, 12L/12D, or 8L/16D. Their ovarioles did not s show any development of vitellogenesis before or during diapause and even when exposed at
after overwintering. When diapausing adults were treated with JH III they resumed feeding and laid several eggs and broke diapause condition temporally. But diapausing adults treated with 20-hydroxyecdysone did not show any response.
Oviposition Activities of Larger Black Chafer (Holotrichia morosa Waterhouse) and Korean Black Chafer (H. diomphalia Bates)
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 265~270
Oviposition activities of the larger black chafer(HolotTichia mOTosa Waterhouse) and Korean black chafer(H. diomphalia Bates) were examined in the laboratory and field from 1985 to 1990. In H. mOTosa and H. diomphalia, total durations of oviposition were 31.70
17.33 days and 61.17
23.15 days, numbers of days of actual oviposition were 9.00
5.03 days and 22.33
11.72 days, total numbers of eggs laid laid per female were 23.43
16.26 and 65.67
37.97, and numbers of eggs laid per female per day were 2.60
2.50 and 2.94
2.34, under laboratory conditions. Difference of total numbers of eggs per female between both species seemed to be due mainly to numbers of days of actual oviposition. Oviposition period under laboratory conditions was considerably delayed behind that in the field in H. morosa but the two oviposition periods were almost overlapped in H. diomphalia. In the field, rates of gravid females of H. diomphalia were obviously higher than those of H. mOTosa, but numbers of eggs per gravid female were almost same in the two species, H. diomphalia adults did not show marked oviposition and feeding preference among several species of weed plants in the insect net chamber.
Revision of the Tribe Cnephasiini(Lepidoptera: Tortiricidae: Tortricines)in Korea
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 271~284
Nine species belonging to 6 genera of the tribe Cnephasiini, Tortricinae are revised in Korea. Of them a new genus, Immarana gen. nov. and 3 species,
are described as new to science. Two species, Kawabeia ignavana Christiph and Oporopsamma stenoptera (Filipjev) are reported for the fist time from Korea. A key to the genera of the tribe and all available information on the larval host plants are also given.
Studies on the Character of Ant(Formicidae) in Korea on the Basis of Scanning Electron Microscope(I) -On the Form-Character of Smithistruma japonica(Ito)-
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 285~290
Smithistruma japonica(lto) unrecorded species of Dacetini tribe in Korea was found in Is. Kekumdo, Chonnam Province and named Saw teeth scale ant. The form-characteristics difference between Smithistruma japonica(Ito) and Strumigenys lewisi Cameron was discribed with the result of observation by the scanning electron microscope(SEM). Total species of Dacetini tribe in Korean contained two species in two genus.
Resistance of Diamondback Moth(Plutella xylostella L.: Yponomeutidae: Lepidoptera) against Bacillus thuringiensis Berliner
Korean journal of applied entomology, volume 30, issue 4, 1991, Pages 291~293
Inter-regional difference in median lethal concentration of Bacillus thuringiensis diamondback moth was disclosed to be high. Pyungchang strain showed at most 41 times resistance compared to KN-IA strain of which
value was 5.5 ppm. and Oksan strain Showed 11 times resistance. The JMC strain, susceptible to pyrethroids, also showed 12 times resistance against B.T., suggesting difference in resistance mechanism between pyrethroid and B.t.