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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Korean journal of applied entomology
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Journal DOI :
Korean Society of Applied Entomology
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Volume & Issues
Volume 48, Issue 4 - Dec 2009
Volume 48, Issue 3 - Sep 2009
Volume 48, Issue 2 - Jun 2009
Volume 48, Issue 1 - Mar 2009
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Two New Records of the Family Miridae (Hemiptera: Heteroptera) in Korea
Seong, Jong-Woon ; Lee, Gwan-Seok ; Lee, Seung-Hwan ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 1~4
DOI : 10.5656/KSAE.2009.48.1.001
Two species of Miridae, Pachylygus nigrescens (Kerzhner 1977) and Deraeocoris yasunagai Nakatani 1995, are reported for the first time from Korea. The brief information on them is presented with the photos of specimens.
A Review of the Tribe Trachodini Gistel, 1848 from Korea (Coleoptera: Curculionidae)
Park, Sang-Wook ; Hong, Ki-Jeong ; Lyu, Dong-Pyeo ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 5~10
DOI : 10.5656/KSAE.2009.48.1.005
In total, 7 species of two genera under the tribe Trachodini Gistel are recognized from Korea. Among them, four species, Trachodes ovipennis Morimoto et Miyakawa, Acicnemis azumai Morimoto et Miyakawa, A. palliata Pascoe, and A. shibatai Voss are reported for the first time from Korea. A key to the tribe Trachodini, brief descriptions and illustrations of the adults are provided.
Seasonal Occurrence and Developmental Characteristics of Ussur Brown Katydid, Paratlanticus ussuriensis Uvarov (Orthoptera: Tettigoniidae)
Moon, Sang-Rae ; Noh, Doo-Jin ; Yang, Jeong-Oh ; Yoon, Chang-Mann ; Ahn, Ki-Su ; Kim, Gil-Hah ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 11~19
DOI : 10.5656/KSAE.2009.48.1.011
This study was performed to investigate the seasonal occurrence, developmental characteristics of each nymphal stages with different temperatures (20, 25,
), longevity and fecundity of ussur brown katydid, Paratlanticus ussuriensis, damaging by outbreaks in the orchard areas of Bitan-ri, Yeongdong, Chungbuk. Paratlanticus ussuriensis occurred from late-March to late-August with peak of mid-May. Newly emerged nymphs appeared from March and do damaged fruit orchards with peak of mid-May when P. ussuriensis existed as 4th and 5th nymphal stages. P. ussuriensis adult occurred from early-June to mid-Aug. with peak of mid-July. Total density of P. ussuriensis was showed highest in mid-May. Paratlanticus ussuriensis goes through nymphal stages to 7th nymph, the ovipositor began exposed to outside from the 4th instar and the body weight increased heavily from this stage and the wings were observed from 6th instar. Developmental period was longer as increased the nymphal stages. Sex ratio of collected insect was showed as 0.57; females more than males. As increased the temperature, developmental period was to be short. Preoviposition was also to be short as 5.0, 4.3, and 3.4 days at 20, 25,
, respectively, and fecundity increased as 69.0, 87.1, and 104.3 at 20, 25,
, respectively. Longevity of male and female at
was showed the longest with 35.7, and 32.9 days and showed the shortest with 30.1 and 28.1 days at
, respectively. The difference of developmental period in male and female were showed longer in female without relation of temperature. The eggs laid were frequently distributed 3 to 4 cm from soil surface, and showed the behavior laying eggs intensively when early oviposition period.
Seasonal Occurrence and Age Structure of Paromius exiguus (Distant) (Heteroptera: Lygaeidae) on Major Host Plants
Park, Chang-Gyu ; Park, Hong-Hyun ; Uhm, Ki-Baik ; Lee, Joon-Ho ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 21~27
DOI : 10.5656/KSAE.2009.48.1.021
Paromius exiguus (Distant) has caused serious damage by pecky grains around Gimpo paddy fields in 2001. We conducted field and laboratory studies to determine the seasonal occurrence and age distribution of P. exiguus on the three major host plants. The overwintering P. exiguus was found mainly on the basal part of gramineae weeds in various localities. After overwintering, in mid-May, the adults aggregated on the grain parts of Imperata cylindrica, laid their eggs and nymphs developed into adults on the same host plants. By the time, the Calamagrostis epigeios colony had newly occupied I. cylindrica areas, the nymphs and adults of first generation had already moved to the second host. The second generation of P. exiguus, after having completed its life cycle on C. epigeios, the newly emerged adults migrated to the rice plants and other gramineae weeds in early August. Afterwards, they complete its third generation cycle where they can move to the overwintering site again. P. exiguus has the five nymphal stages and each nymphal stage could be determined by head or prothoracic width. On the I. cylindrica and O. sativa hosts, the age distribution of P. exiguus showed a simple structure as each stage ratio increased stepwise with time. But in case of C. epigeios, as the newly emerged adults and immature nymphs continuously migrate after a month from the I. cylindrica, the age structure became remarkably complex. The peak nymphal density was observed when the ratio of third and forth instar was the highest in the population. The finding about the specific age structure on each generation of the insect would be very useful in control decision making on the major host plants. It is also important to consider the host`s specificity to pesticide sensitivity in relation to various nymphal stages.
Occurrence of Lepidopteran Insect Pests and Injury Aspects in Adzuki Bean Fields
Jung, Jin-Kyo ; Seo, Bo-Yoon ; Cho, Jum-Rae ; Kwon, Yun-Hee ; Kim, Gil-Ha ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 29~35
DOI : 10.5656/KSAE.2009.48.1.029
Three lepidopteran insect pests of the legume pod borer, Maruca vitrata (Lepidoptera: Pyralidae), the soybean pod worm, Matsumuraeses phaseoli (Lepidoptera: Tortricidae) and an Ostrinia spp. (Lepidoptera: Pyralidae) attacking adzuki bean, Vigna angularis, were confirmed as the major insect pests during the reproductive developmental stage of adzuki bean, and M. vitrata existed dominantly. Almost all plants in the adzuki bean field were injured by at least one of the three species, and
of reproductive organs were injured. Unbloomed inflorescence occurred continuously through the reproductive stage of adzuki bean. While the flower was many at the early stage and its number soon decreased, the pod was few at the early stage, but its number increased soon and maintained at a constant level. The results suggested that the adzuki bean injured by insect pests compensate the flower loss by developing new inflorescence, but the compensation do not cause the development of new pods. While M. vitrata and M. phaseoli were observed in flowers, pods and stem mainly during the first half of reproductive stage of adzuki bean, Ostrinia spp. was observed only in pods and stem during the second half. In addition, while all instars of larvae of M. vitrata were observed, larvae between the third and fifth instars for M. pahseoli and Ostrinia spp. were observed.
Occurrence of Stink Bugs and Pecky Rice Damage by Stink Bugs in Paddy Fields in Gyeonggi-do, Korea
Lee, Jin-Gu ; Hong, Soon-Sung ; Kim, Jin-Young ; Park, Kyeong-Yeol ; Lim, Jae-Wook ; Lee, Joon-Ho ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 37~44
DOI : 10.5656/KSAE.2009.48.1.037
This study was carried out to survey the occurrence of stink bugs and pecky rice grain caused by the stink bugs in paddy fields in six districts of Gyeonggi-do. In the levee of the paddy fields, 30 species of the stink bugs were collected, and the dominant species were Paromius exiguus in Hwaseong and Siheung, and Stenotus rubrovittatus in Pyeongtaek, Icheon and Paju. In the paddy fields, 23 species were collected, and the dominant species were Paromius exiguus in Siheung, and Stenotus rubrovittatus in Pyeongtaek, Icheon and Paju. P. exiguus overwintered and proliferated mainly in the west coastal region, where its host plants, Imperata cylindrica and Calamagrostis epigeois, were abundant, and then moved to paddy fields later in the season, resulting in the peak density in September in paddy area. Stenotus rubrovittatus and Cletus punctiger were abundant in paddy area in August and September, and Eysarcoris aeneus was abundant in June and July. When the stink bugs were inoculated on the rice, the rate of pecky rice caused by E. aeneus and P. exiguus at milk ripe stage was 10.2% and 4.8%, respectively, and the rate by S. rubrovittatus and P. exiguus at dough ripe stage was 4.3% and 2.7%, respectively. The damage shape of pecky rice was distinctive according to the species. The surface of pecky rice by P. exiguus was very smooth but the surface of pecky rice by E. aeneus was rough and caved. In the pecky rice by S. rubrovittatus, the spot occurred at the topside of the grain.
Developing Sequential Sampling Plans for Evaluating Maize Weevil and Indian Meal Moth Density in Rice Warehouse
Nam, Young-Woo ; Chun, Yong-Shik ; Ryoo, Mun-Il ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 45~51
DOI : 10.5656/KSAE.2009.48.1.045
This paper presents sequential sampling plans for evaluating the pest density based on complete counts from probe in a rice storage warehouse. Both maize weevil and Indian meal moth population showed negative binomial dispersion patterns in brown rice storage. For cost-effective monitoring and action decision making system, sequential sampling plans by using the sequential probability ratio test (SPRT) were developed for the maize weevil and Indian meal moth in warehouses with 0.8 M/T storage bags. The action threshold for the two insect pests was estimated to 5 insects per kg, which was projected by a matrix model. The results show that, using SPRT methods, managers can make decisions using only 20 probe with a minimum risk of incorrect assessment.
Biological Characteristics of Lycorma delicatula and the Control Effects of Some Insecticides
Park, JI-Doo ; Kim, Min-Young ; Lee, Sang-Gil ; Shin, Sang-Chul ; Kim, Jun-Heon ; Park, Il-Kwon ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 53~57
DOI : 10.5656/KSAE.2009.48.1.053
Biological Characteristics of Lycorma delicatula and insecticidal activity of some insecticides against nymphs of L. delicatula was investigated. Nymph of L. delicatula had 4 instars, and color of body was black. There were white spots on the body of 1st-3rd nymph. Upper body became red at 4th nymph. Adult forewings were brownish, and had black spots. Color of hind wing were red. The egg mass was covered with a yellowish brown secretion. The adult of L. delicatula emerged once a year. Among test insecticides, deltamethrin 1% EC and fenitrothion 50% EC showed very quick and strong insecticidal activity against the 2nd-3rd nymphs of L. delicatula. Imidacloprid 4% SL and clothianidin 8% SC showed 100% insecticidal activity at 24h after treatment. Thiacoprid 10% SC revealed the weakest insecticidal activity among the insecticides tested.
Pheromone Trap Type and Height for Attracting of Riptortus clavatus (Thunberg) (Hemiptera: Alydidae) in Soybean Field
Paik, Chae-Hoon ; Lee, Geon-Hwi ; Oh, Young-Jin ; Park, Chung-Gyoo ; Hwang, Chang-Yeon ; Kim, Sang-Soo ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 59~65
DOI : 10.5656/KSAE.2009.48.1.059
This study was conducted to determine pheromone trap type and height in forecasting populations of R. clavatus in soybean fields using pheromone. The most effective pheromone trap type and height in forecasting populations of R. clavatus were fish trap and 60 cm above ground. Ratio of R. clavatus adults female and male in soybean field was 1.5 to 1 and Piezodorus hybneri was also attracted to the aggregation pheromone trap of R. clavatus. Attractiveness of two stink bug species caught on synthesis pheromone of R. clavatus was surveyed with imported production and synthesized production. Imported pheromone attracted only adult of R. clavatus, but synthesized pheromone attracted both adult of R. clavatus and P. hybneri. Change of population of R. clavatus was observed using pheromone trap and sweeping method in soybean field. Adults of R. clavatus occurred from early August and the population reached its peak in early September when pheromone trap was used. In case of sweeping method, its fluctuation pattern was similar to that of pheromone trap.
Influence of Aggregation Pheromone of Riptortus clavatus (Heteroptera: Alydidae) on the Occurrence of Egg Parasitoid, Gryon japonicum (Hymenoptera: Scelionidae)
Paik, Chae-Hoon ; Kang, Seok-Min ; Jeon, Yong-Kyun ; Lee, Geon-Hwi ; Choi, Man-Young ; Oh, Young-Jin ; Park, Chung-Gyoo ; Hwang, Chang-Yeon ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 67~72
DOI : 10.5656/KSAE.2009.48.1.067
The kairomonal activity of the aggregation pheromones of Riptortus clavatus for the egg parasitoid, Gryon japonicum, were investigated in soybean field. The parasitism rate of G. japonicum gradually decreased when the distances between pheromone traps and egg sites were increased from 0 to 15 m. The active distance of pheromone source for parasitoid attraction was estimated to be ca. 15 m. Under field conditions, the parasitoid wasp population peaked during the late August and early September, and the parasitism rate increased when the number of pheromone traps was increased from one to three per
. However, insecticide-treated plots, the level of parasitism recorded is relatively low. Sex ratios in field populations of G. japonicum were female-biased.
Variation in Aggregation Pheromone Secretion of Bean Bug, Riptortus clavatus
Huh, Hye-Soon ; Jang, Sin-Ae ; Park, Chung-Gyoo ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 73~79
DOI : 10.5656/KSAE.2009.48.1.073
Male adults of bean bug, Riptortus clavatus Thunberg (Heteroptera: Alydidae), release aggregation pheromone (AP) which consists of (E)-2-hexenyl (Z)-3-hexenoate (E2HZ3H), (E)-2-hexenyl (E)-2-hexenoate (E2HE2H), and tetradecyl isobutyrate (TI). Variation in the pheromonal secretion were checked by the factors of age, mating status, seasons, body weight and time in a day. There were no significant differences in the amounts of AP secretion by mating, body weight, and time in a day. Higher amount of AP was detected from older males than younger ones. The amount of AP detected was higher in the males collected from April to September than in those collected during October. No AP was detected in the males of November and December. These phenomena in the AP secretion were discussed in relation to food exploitation and reproductive diapause of the bean bug.
Determination of Economic Injury Levels and Control Thresholds for Spodoptera exigua on Chinese Cabbage
Kim, Seon-Gon ; Kim, Do-Ik ; Ko, Suk-Ju ; Kang, Beom-Ryong ; Kim, Hong-Jae ; Choi, Kyeong-Ju ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 81~86
DOI : 10.5656/KSAE.2009.48.1.081
Economic injury level and control thresholds for the management of beet army worm, Spodoptera exigua (Lepidoptera: Noctuidae) were evaluated on chinese cabbage of two different planting time. Two inoculation times were tested for each planting and the number of inoculated larva was 10, 20, 40, 80, respectively. Damages of leaves by first inoculation were 63.2% after eight days planting on 80 larva inoculation plot. By the second inoculation, those were below 50% after 20 days planting on the end of September. The linear relationships between population density and yield reduction were as following; Y
Evaluation of Toxicity of Plant Extract Made by Neem and Matrine against Main Pests and Natural Enemies
Hwang, In-Cheon ; Kim, Jin ; Kim, Hyeong-Min ; Kim, Do-Ik ; Kim, Sun-Gon ; Kim, Sang-Su ; Jang, Cheol ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 87~94
DOI : 10.5656/KSAE.2009.48.1.087
KNI3126 which is the eco-friendly material made by plant extracts - neem and matrine - have been evaluated for efficacies against 6 main pests and toxicity on natural enemies. Insecticidal efficacies of KNI3126 against plant hopper were above 95% at 5 days after treatment (DAT), whereas pesticidal effects against the cotton aphid were above 95% at 3 DAT and slightly decreased at 5 DAT. Insecticidal efficacy against the palm thrips resulted in lower control value as 68.1% than that of chemical insecticides. KNI3126 showed more than 95% control value against diamond back moth, suggesting that it could suppress the population of pest hard to control as eco-friendly material. Mortalities against two-spotted spider mite were about 80% at 1 DAT and over 90% at 5 DAT, respectively. For evaluation of the toxicity on natural enemies, effect against predatory natural enemy was classified as moderate selective toxicity based on the criterion of International Organization of Bio-Control (IOBC), whereas against parasitic natural enemies was found to be relatively safe. Repellent effect was weak against plant hopper, but strong against two-spotted spider mite. In the toxicity test for safety, KNI3126 was classified as the lowest level at acute oral, acute dermal and fish toxicity test and did not induce the irritancy at skin irritation test and eye irritation test.
Study on Chestnut Insect Pests by Environmentally Friendly Controls in Korea
Lee, Chong-Kyu ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 95~100
DOI : 10.5656/KSAE.2009.48.1.095
This study was conducted to develop environmentally friendly control techniques to reduce chestnut insect pests. The study sites were selected in intensive chestnut orchards of Jinju city, Gyeongnam province. In early and middle-ripening cultivars of chestnut tree, the damage of chestnut fruits by Dichocrocis punctiferalis was significantly lower in wromstop than other treatment such as wromstop+wood vinegar, Capture-machine (p<0.05), While there was no significant difference among treatments in late-ripening cultivars. The hight control effect for D. punctiferalis was showed the highest in wromstop treanment with 40.49% and 41.89% in early and late-ripening cultivars. The control effects for Curculio sikkimensis in late-ripening cultivars of chestnut tree were 34.59% in wromstop imidacloprid treatment and 28.94% in air control treatment.
Pesticidal Activities and Effect on Its Biological Characteristics of Bacillus thuringiensis Strains from Soil against Rice Pests, Cnaphalocrosis medinalis and Maranga aenescens
Seo, Mi-Ja ; Paik, Chae-Hoon ; Kang, Mi-Hyung ; Lee, Geon-Hwi ; Lee, Du-Ku ; Lee, Kyu-Seong ; Youn, Young-Nam ; Yu, Yong-Man ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 101~108
DOI : 10.5656/KSAE.2009.48.1.101
For biological control of larva of Cnaphalocrocis medinalis and Naranga aenescens do considerable damage to crops by folding and scraping the leaf tissue of rice, a large number of Bacillus thuringiensis isolates have been obtained from soil samples in Korea and the pesticidal activity was assayed against two insect pest species described above. Among 53 Bt isolates tested in bioassay, 18 and 13 isolates showed over 90% mortality against C. medinalis and N. aenescens, respectively. Some isolates (11 isolates including CAB141) presented dual activity against C. medinalis and N. aenescens. These isolates showed over 96% control effect in pest control in laboratory against larvae of C. medinalis. Also, it was investigated that pupation, pupal length, and adult emergence of larvae exposed to Bt suspension decreased. Especially, the pupal length of C. medinalis after being fed corn seedling leaves treated Bt suspension for 10 days, were much smaller than that of control.
Heat Treatment Effects on the Thermal Stability and Mechanical Property of Spider Silks from Nephila clavata and Bassaniana decorata
Chang, So-Yeon ; Lee, Ji-Hye ; Lee, Ju-Ha ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 109~115
DOI : 10.5656/KSAE.2009.48.1.109
The thermal stability and mechanical properties of Nephila clavata and Bassaniana decorata spider silks were measured and compared with those of aramid and polyester fibers. The thermal stability of the spider silk was lower than those of the commercial aramid and polyester fibers. However, the mechanical properties of the spider silk were far superior to that of the polyester fiber. The effect of the water content of the spider silk on its thermal stability and mechanical property was examined by conducting the silk to heat treatment at
under vacuum for various times. The results indicated that spider silk subjected to heat treatment for 1.5 hr had excellent thermal stability and mechanical property.
Stink Bugs (Hemiptera) and Their Size, Collected near Jinju City, Gyeongnam Province
Lim, Eu-Gene ; Park, Chung-Gyoo ;
Korean journal of applied entomology, volume 48, issue 1, 2009, Pages 117~122
DOI : 10.5656/KSAE.2009.48.1.117
True bugs were surveyed at the forest, bank of rice fields, and sweet persimmon orchard near Jinju city, Korea in 2006 and 2007. Number of species (individuals) collected at the forest, bank of rice fields and persimmon orchard are 24 (817), 21 (425) and 15 (193) species, respectively. A dominant species was Nysius plebeius at the forest, and Cletus punctiger at the bank of rice fields and persimmon orchard. In all the three sites N. plebeius, C. punctiger, and Pachygrontha antennata were more abundant than other species, consisting 77.8% of the total collections. N. plebeius was mainly collected on July at the bank of paddy field, and on August and after October at the forest. Most number of C. punctiger was collected from early July to early September at three sites. P. antennata was mainly collected after October at the forest. Body sizes of the stink bugs were measured.