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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 36, Issue 4 - Dec 1997
Volume 36, Issue 3 - Sep 1997
Volume 36, Issue 2 - Jun 1997
Volume 36, Issue 1 - Mar 1997
Selecting the target year
Notes on four Anthribid betles(Coleoptera, anthribidae) from Korean Peninsula
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 199~202
Eighteen species in 15 genera of anthribids have been reported from Korea. Four species of anthribids, Enedreytes gotoi Shibata, Sympaector rugirostris (Sharp), Litocerus securus (Boheman), and Rhaphitropis truncatoides Morimoto are added to the list for the first time in Korea. Thus Korean anthribids fauna have 22 species in 19 genera.
Occurrence of Praia ussuriensis(Hymenoptera, Cimbicidae) in Korea
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 203~205
Collection data are given for a cimbicid sawfly, Praia ussuriensis Malaise, 1939, from Suwon, Kyonggi-do, Mt. Odae-san, Kangwon-do, Mt. Sobaek-san, Kyongsangbuk-do, and Mt. Chirisan, Chollanam-do. This is the first distribution record of the genus and species from Korea.
Genetic Relationships among the Parental Bombyx mori Strains of the Current F
Hybrid Silkworm based on RAPD
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 206~214
The genetic relationships among the twenty parental silkworm, Bombyx mori strains authorized in Korea were evaluated using RAPDs-PCR(Random Amplified Polymorphic DNAs-Polymerase Chain Reaction). Twenty-six different 10-mer oligonucleotide primers were used to screen genetic characteristics of parental twenty silkworm strains by RAPD-PCR analysis. 24 primers showed different banding patterns among the strains. Based on these RAPD patterns, the genetic relationships among the silkworm strains were analyzed by UPGMA(Unweighed Pair-Group Method with Arithmetic average) method. The phylogenetic relationships in the twenty silkworm strains were classified into two major sub-groups at the genetic similarity coefficient of 0.60. The first sub-group included Jaml13, Jaml 19, Jaml20, Jam123, Jam1 25 and Jam 127. Jamll4, Jam1 2 I, Jam 122, Jam 124, Jam1 26, Jam 128, Jam129, Jam 130, Jam 131, Jam1 32, Jam133, Jam134, Jam301 and Jam302 were included in the 2nd group. The genetic distance values among Jam1 14, Jam120 and Jam127 were lower than those among the other strains, while Jam129 is very closely related to Jam131 as showing coefficient value of 1 .O.
A Generalization of the Matrix Model of Rice Weevil Population (Coeloptera: Curculionidae) and its Applicability
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 215~223
A matrix model of rice weevil population based on degree day (DD) was constructed. The basic matrix model predicted on exponential jncrcase of the adult weevil density and the finite rate of increase(h) of the population was estimated to be 2.155/100DD. Adult density simulated by the matrix model including intraspecific competition showed a damped oscillation over time and reached at the stationary level of 530 at 69, 300DD. The experimental population showed similar features to that of the model. But there were some differences in the highest density and period of adult oscillation. The differences could largely be caused by the assumption of the model; resource constancy.
Habitats and Abundances of Korean Phytoseiid Mites
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 224~230
A~nblyseius eharui and A. firllat~dic~w~esr e most abundant among Korean phytoseiid mites. The most favored plant\ chosen for habitats by Korean phytoseiid mites were Castanetr CI-enatcia nd P ~ L ~ ~.sIerLruIlaSt( i var. spontruleo. A. ehcirui, A. finltrr~(lic.us.a nd A. rc~omrrvleyia re most common and found on majority of plants observed.
Observation on the Fauna of Arthropods form Apple Orchards in Winter in Kyongbuk Province
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 231~236
Arthropods of 3 Classes, 19 Orders and 58 Families were collected by the enticing band from the trunk of apple trees in winter in Kyongbuk province. The two spotted spider mite, Tetranychu.v urricae Koch, was dominant species with 53.0%, followed by Eriosomtr lanigerutn Hausmann. 16.7%. Oribatida 13.3% and Collembola 9.3%. Of those, herbivores were majority, followed by some decomposers and few natural enemies. Arthropods of 2 Classes, 12 Orders and 17 Families were observed from the fallen leaves. T. urric,ae 63.1% was dominant, followed by Collembola 13.797~ and other Arthropods. While 2 Classes, 9 Orders and 18 Families were investigated from the soil of apple orchards. They were collembola 37.9%. Oribatida 34.476, T. urticae Ih.l% and others in few numbers. Decomposers were majority, followed by herbivores and few natural enemies.
Density Fluctuation of Tetranychus urticae and Three Predatory Mite Species(Phytoseiidae) by the Differently Infested Levels
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 237~242
Comparative studies on suppression possibility with three phytoseiid mite species (An.thly,seiu,sw omersleyi Schicha. A. ,fidIrrc~i.Gs arman and T\ulcornerphlorlrotiiu.s oc~c~idetitaliNs esbit) to the two-spotted spider mite (Te~trrrt~yc.Iir~l~l\ulcorner.i\c .(re Kwh) on kidney bean leaves in field and greenhouse were carried out. In the field experiments with the initial prey -predator ratio of 4 : 1. I0 : I and 20: I . A. ,firllrrcis suppressed successfully the prey populations at all three ratios 17 days after the initial infestation. A. wornc,r-;leyi \uppressed the prey population only at the ratio of 4 : 1, while T. oc~c~ideritcr1iw.s as unable to suppress the prey population at all tested ratios. In the greenhouse experiments with the initial prey-predator ratio of 10: 1, A. jil1ltrci.s could suppress the prey population continuously during the infestation period. A. ~~otnc~r,slceoyuil d suppress the prey population for 13 days after the initial infestation, while T. occie1mttrli.s could suppress the prey population for 8 - 23 days after the initial infestation
Occurrence of Mahasena aurea (Butler) (Lepidoptera: Psychidae) Attacking Ginkgo biloba L. and Its Life Cycle in Korea
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 243~248
The local distribution and life cycle of Mahasma aurea (Butler) attacking Ginkgo biloba L. in Seoul and Incheon areas were studied during 1994 - 1996. The species had one generation a year. The overwintered 3rd larvae begin to feed on buds of the host plant from mid May and then on the leaves until early June. Newly hatched larvae mostly infested the leaves from mid August to late September. Pupation took place from mid June to early July, and the moths emerged in early July.
Physiological factors affecting rapid cold hardening of the beet armyworm, Spodoptera exigua(Hubner)
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 249~255
The sublethal temperature (5
C for 2hr) led the fifth instar larvae of beet armyworm, Spodoprern exigucr (Hiibner), to increase cold tolerance to subzero lethal temperatures ( 'rapid cold hardening' ). The strength of rapid cold hardening was, however, varied among different populations which showed different cold tolerance in response to cold temperatures. To analyse the physiological factors affecting the rapid cold hardening, hernolymph osmolalities. supercooling points, glycerol contents, and cold stress proteins were measured by treating the fifth instar larvae with the sublethal low temperatures. The treated larvae showed increase of hemolymph osmolalities and glycerol contents. Changes of the osmolalities were greater in cold-hardy strains than in cold-susceptible strains. The sublethal temperature also induced them to express the cold-stress proteins (I0 - 20kD) in the hemolymph. but did not to change supercooling points.
Cold hardiness of Spodoptera litura Fabricius (Lepidoptera: Noctuidae)
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 256~263
Supercooling points (SCP) and cold tolerance of the tobacco cutworm, Spodol~rera litura Fabricius. were measured in response to subzero temperatures. SCPs were varied among developmental stages. Eggs showed the lowest SCP (-27
C). Pupae and adults had the intermediate SCP(- 18
C). The SCPs (- I0 to - 16
C) of larvae increased with their ages. Lethal low temperature of each stage was higher than its SCP. Preexposure of eggs and larvae to a sublethal low temperature increased their survival capacities under lethal low temperatures. The sublethal temperature also induced the fifth instar larvae to increase hemolymph osmolality and to produce cold-induced proteins of apparent molecular weights of 20 and 27 kD. These results indicate that this species is classified into a freeze-susceptible insect.
Isolation of Non-toxic Bacillus thuringiensis Strains from the Dead Larvae of Apriona germari and Aphodius apicalis
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 264~269
Four strains of Brrcil1u.r tl~urir~~gier~w.seir.se isolated froin the dead larvae of mulberry longicorn beetle (Apriol~ng ermrrri) and dung beetle (Aphotiius trpicu1i.s). One nf four B. thuringien.si.s isolates turned out to be subspecies titrr1n.star1iensi.v but the remains were not identified using 33 B. thuringic~nsi.f~la gellar ( H ) antibodies. Furthermore. bioassays of spore-parasporal inclusion protein mixture conducted against third instar larvae of A. gerrntrri or A. rrpicalis, second instar larvae of Bom6y.r mori, and third instar larvae of Cu1r.r pipiens pullens showed that the isolates were non-toxic. To further confirm, four isolates were characterized and analysed by SDS-PAGE and agarose gel electrophoresis. The results revealed that parasporal protein and plasmid DNA patterns of four isolates are different from those of drrrn~stadir~r~asnisd 20 known non-toxic B. t11urir1gic~n.sis.st rains, suggesting that the four isolates are novel non-toxic B. rlzurin,gi~i~.si
Field Performance of Insecticidal Baits for German Cockroach (Blattaria: Blattellidae) Control
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 270~276
Bait formulations containing 50% micro-capsuled fenitrothion, 2.0% hydramethylnon or 0.8% chlorpyrifos were evaluated in an 8 week field experiment against German cockroach, Blattella germanica(L). In German cockroach infested 15 restaurants, micro-capsuled fenitrothion (avg. 82.8%) was more effective at reducing adult German cockroach populations than chlorpyrifos (avg. 68.4%), but was about equally as effective as hydramethylnon(avg. 86.1%). The baits of micro-capsuled fenitrothion (avg. 76.5%), hydramethylnon (avg. 82.8%) and chlorpyrifos (avg. 74.9%) almost equally reduced nymphal German cockroach populations in the field. Most baits remained in the bait stations at the heavily infested restaurants after the 8 week treatments. However, the contents of hydramethylnon baits had been subject to significantly greatest consumption (0.72g) and the remaining bait was on the average of 57% by German cockroaches. It was assumed that the previous phenomenon of extra consumption of bait was explained by the infesting cockroaches continuously taking these baits because of the mode of action, the bait food material and the population densities of German cockroaches.
Effects of Sublethal Doses of Chlorpyrifos-methyl on the Following Generation of the Beet Armyworm, Spodoptera exigus (Hubner)
Korean journal of applied entomology, volume 36, issue 3, 1997, Pages 277~282
Chemosterilant effect of chlorpyrifos-methyl (CPM) on the beet armyworm, Spodoptera e.rigua (Hubner) was investigated, using topical application. Egg fecundity and fertility were analyzed in the adults reared from the fifth instar larvae which were treated with sublethal doses of CPM. Though CPM reduced fecundity a little, it gave significant negative effect on egg fertility in a dose-dependent manner. Genetic analysis was performed by reciprocal crosses between treated (100 Wgllarva) and untreated individuals and showed a dominant lethal effect of CPM on egg fecundity and fertility. This results indicate that chlorpyrifos-methyl may act as a chemosterilant as well as a well-known neurotoxicant, and suggest that it can be used in genetic control program.