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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 52, Issue 4 - Dec 2013
Volume 52, Issue 3 - Sep 2013
Volume 52, Issue 2 - Jun 2013
Volume 52, Issue 1 - Mar 2013
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Morphometric Analysis of Wing Variation of Lantern Fly, Lycorma delicatula from Northeast Asia
Kim, Hyojoong ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 265~271
DOI : 10.5656/KSAE.2013.07.0.043
Morphometric analysis of Lycorma delicatula was performed to confirm whether local individuals had a geographical difference in their wing variations. The L. delicatula individuals were collected from 10 localities in Korea, China, and Japan, and 14 morphometric characteristics selected from the forewing were analyzed. The Korean individuals were similar to the ones from the northern area of the Yangtze River, but less similar to the others from the southern area of the Yangtze River. The individuals from Seoul and Buan were very similar to those from Shanghai. In case of wing spots, the individuals from Beijing had relatively small spots, while the ones from Linan had big spots. The Japanese individuals had a relatively large wing size.
Abundance and Population Stability of Relict Butterfly Species in the Highlands of Mt. Hallasan, Jeju Island, South Korea
Kim, Sung-Soo ; Lee, Cheol Min ; Kwon, Tae-Sung ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 273~281
DOI : 10.5656/KSAE.2013.07.0.017
The number of mountain species that live in the highlands and are isolated from other populations will likely decline because of global warming. The present study was conducted to survey populations of 10 relict butterfly species living in the highlands of Mt. Hallasan, Jeju Island. Butterfly surveys were conducted for 6 years from 2007 to 2012 by using the line transect method. To test whether relict species occur in the lowlands, we surveyed butterflies at 2 reference sites in the lowlands in 2012. All the 10 relict species were observed at the highland sites, whereas they were not observed at the 2 lowland sites. Majority of the relict species surveyed are relatively abundant, and the stability of their populations did not differ from that of other butterfly species. When we analyzed the annual change in populations, compared to other species the relict species did not show any difference in population change. Hence, the influence of climate change is not yet apparent on the populations of relict butterfly species. We evaluated the vulnerability of each relict species on the basis of our results and occurrence data from South Korea.
Effect of Temperature on the Biological Attributes of the Brown Lacewing Micromus angulatus (Stephens) (Neuroptera: Hemerobiidae)
Kim, Jeong-Hwan ; Cho, Jum-Rae ; Lee, Mi-Sook ; Kang, Eun-Jin ; Byeon, Young-Woong ; Kim, Hwang-Yong ; Choi, Man-Young ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 283~289
DOI : 10.5656/KSAE.2013.08.0.024
This study was performed to investigate the biological characteristics of the brown lacewing Micromus angulatus (Stephens) at four different temperatures (15, 20, 25, and
relative humidity under a photoperiodic regime of 16:8(L:D) h. The developmental threshold and effective accumulative temperature from egg to pupa for M. angulatus were
and 270.3 day-degrees, respectively. The developmental period of egg, larva, and pupa at
was 4.4, 5.5, and 6.9 days. respectively. The longevity of an adult female M. angulatus was 34.9 days. The oviposition period for M. angulatus was 28.7 days, in which it laid a total number of 515.2 eggs during its life span. The maximum number of eggs laid by a female in a day was 54.8. Daily consumption by M. angulatus at
instars, and 91.0 adults of the glasshouse potato aphid, Aulacorthum solani. Therefore, M. angulatus could be a promising biological control agent against aphids.
Key to the Species of the Genus Typhlodromips (Acari: Phytoseiidae) with A New and A Newly Recorded Species in Korea
Ryu, Myon Ok ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 291~294
DOI : 10.5656/KSAE.2013.08.0.037
Typhlodromips geumgangensis n. sp. is described in Korea. Typhlodromips paraki, newly recorded species from this country, is redescribed based on Korean specimens, and key to the species of the genus Typhlodromips is provided.
Suppression of Gene Expression in the Fifth Instar Larvae of Spodoptera exigua at Low Developmental Threshold Temperature
Choi, Bongki ; Park, Youngjin ; Kim, Yonggyun ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 295~304
DOI : 10.5656/KSAE.2013.08.0.034
This study aimed to understand the physiological status of the beet armyworm, Spodoptera exigua at low developmental threshold temperature (LTT) through analysis of gene-expression patterns associated with different functions (metabolism, nervous system, immune, and stress). The estimated LTTs for egg, larval, and pupal developments varied with
. Larvae were able to develop at the lower temperatures than eggs and pupae. However, the physiological LTT (
) in the fifth instar was much higher than the estimated LTT (
). Gene expression patterns estimated by a quantitative RT-PCR (qRT-PCR) indicate that most genes in different functional groups increased their expressions with increase of larval instars. In the same fifth instar, as the treatment temperatures increased, the gene expression levels increased. Moreover, the newly molted fifth instar larvae were different in their gene expression rates according to their previous culturing temperatures. Most gene expressions were suppressed in the fifth instar larvae at the physiological LTT (
). However, the larvae at
gradually exhibited significant increase in the gene expression rates with rearing time just like those at the higher temperature. These results suggest that S. exigua at LTT exhibits a typical gene expression pattern with maintaining significantly suppressed levels.
Three Species of Gelechiidae New to Korea (Lepidoptera, Gelechioidea)
Park, Kyu-Tek ; Lee, Bong-Woo ; Cho, Soowon ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 305~309
DOI : 10.5656/KSAE.2013.08.0.030
Three species of Gelechiidae, Gnorimoschema streliciellum (Herrich-Sch
ffer, 1854), Syncopacma wormiella (Wolff, 1958), and Mesophleps acutunca Li and Sattler, 2012 are reported for the first time from Korea. Specific diagnoses and re-descriptions are provided as necessary, with adult and male genitalia images.
Blepharhymenus koreanus Paśnik and Tachyusa wei Pace New to South Korea (Coleoptera: Staphylinidae: Aleocharinae)
Song, Jeong-Hun ; Ahn, Kee-Jeong ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 311~314
DOI : 10.5656/KSAE.2013.09.0.042
Blepharhymenus koreanus Pa
nik and Tachyusa wei Pace are recorded for the first time in South Korea. Habitus photographs, redescriptions and illustrations of diagnostic characters are provided.
Five new Recorded Species of the Tribe Archipini (Lepidoptera: Tortricidae) from Vietnam
Le, Xuanvi ; Park, Bosun ; Qi, Mu-Jie ; Pham, Thivuong ; Bae, Yang-Seop ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 315~320
DOI : 10.5656/KSAE.2013.08.0.019
This study was carried out to inventory the species of the tribe Archipini from Vietnam. Five species are recorded for the first time: Adoxophyes tetraphracta Meyrick, Meridemis bathymorpha Diakonoff, Pandemis corylana Fabricius, Terthreutis bulligera Meyrick, and Ulodemis hyalura Diakonoff. All of species are provided with diagnosis and figures of the adult and genitalia.
Eleven Species, Including Three Unrecorded Species, Belonging to Coleophoridae (Lepidoptera) Collected from Baengnyeong and Yeonpyeong Islands, Korea
Kim, Minyoung ; Lee, Bong-Woo ; Lee, Heung-Sik ; Park, Kyu-Tek ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 321~326
DOI : 10.5656/KSAE.2013.08.0.036
Eleven Coleophora species were found in a faunistic survey for the family Coleophoridae (Lepidoptera: Gelechioidea) in Baengnyeong and Yeonpyeong Islands, located near the Northern Limit Line in the West Sea. Among them, three species Coleophora adjunctella Hodgkinson, C. chenopodii Oku, and C. kurokoi Oku have been recorded for the first time in Korea. For the newly recorded species, taxonomic remarks and illustrations of the adults and female genitalia have been provided.
Plant Parasitic Nematodes in Soybean in Korea and Their Importance Rating
Kim, Donggeun ; Choi, Insoo ; Ryu, Younghyun ; Huh, Changseok ; Lee, Younsu ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 327~333
DOI : 10.5656/KSAE.2013.09.0.047
Plant parasitic nematodes were isolated from 274 soil samples collected from soybean fields in Korea. Nematode importance rating in soybean is proposed based on this study and by reviewing other reports. Soybean cyst nematode, Heterodera glycines is the most important nematode species and rated as
because it detected from 38%(range 25-51%) of soil samples with high density except Jeju province. Root-knot nematode, Meloidogyne spp. is rated
and is more widely distributed in southern provinces, Gyeongnam, Jeonnam, and Jeju province (detection rate ranged 16-44%). Pratylenchus is rated
and is more frequently detected from northern provinces such as Gyeonggi and Gangwon (detection rate ranged 10-13%). Helicotylenchus is rated
and is particularly important in Jeju province (detection rate is 62% and numbers averaged 571 nematodes/
soil), which is the main production area for sprouting soybean in Korea. Tylenchorhynchus, Paratylenchus, Criconema, Criconemoide, Mesocriconema, Ogma, Xiphinema, Paratrichodorus, and Trichodorus occur in low frequency and density, thus they are rated to
. We propose to delete following nematode genus from the list of soybean parasitic nematode in Korea because their parasitism on soybean is unconfirmed or negligible; Tylenchus, Aphelenchus, Aphelenchoides, Ditylenchus, Hirschmanniella immamuri, Basiria graminophila, Psilenchus, and Pseudhalenchus. Therefore, we revised 30 species in 16 genera as soybean parasitic nematodes in Korea. Importance rating is
Pratylenchus spp. and
Helicotylenchus spp. especially in Jeju province.
Website Monitoring on the Behavior of Consumers for Educational Pet Insects
Kim, So Yun ; Kim, Seong Hyun ; Choi, Won Ho ; Park, Jong Bin ; Park, Hae Chul ; Lee, Young Bo ; Kim, Namjung ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 335~340
DOI : 10.5656/KSAE.2013.08.0.053
As the market of educational pet insects is expanding, understanding the consumer needs became more crucial. To achieve the ideal analysis on the market, this research monitored the behavior of consumers. The posting on the blogs of consumers, who have visited insect museums and farms, or have bought insects were collected as data. Moreover, the informational contents, photographs and texts, were analyzed. The results showed that the family-unit visitors with elementary school lower graders were the main type of visitors for their children's education. The visiting areas were concentrated in Seoul and the Metropolitans of Gyeonggi province, and the visits were mostly occurred during their children's vacation period. The analysis of posted photographs showed the visitors' high interest in the hands-on program. According to the texts on visitors' blogs, especially, the largest number of visitors satisfied with the variety of program. It implies the necessity of development in diverse and differentiated hands-on program. Otherwise, the programs available to connect insects to other animals and plants should be introduced to reduce aversion against insects, which was reported as the strongest dissatisfaction. In conclusion, diversification on insect species and development in systematized hands-on program seem to be required for the continuous growth of educational pet insects market.
Monitoring of Mythimna separata Adults by Using a Remote-sensing Sex Pheromone Trap
Jung, Jin Kyo ; Seo, Bo Yoon ; Cho, Jum Rae ; Kim, Yong ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 341~348
DOI : 10.5656/KSAE.2013.10.0.058
We desinged and evaluated a remote-sensing sex pheromone trap for real-time monitoring of Mythimna separata (Lepidoptera: Noctuidae), a migratory insect in Korea. The system consisted of a modified cone-trap with a sex pheromone lure, a sensing module based on light interruption, a signal transmission module based on code division multiple access, a main electronic board for system control, a power supply based on a solar collector, a stainless steel-pole supporting the system, and a signal collection and display system based on an internet web page. The ratio (>92%) of the actual number of insects to the signal number in the remote-sensing trap was improved by sensing only within a limited period at night on the basis of the insect's circadian rhythm, control of signal sensitivity on the basis of sensing software programming, 1-h interval for signal transmission, and adjustment of the signal transmission program. The signal occurrence pattern in the remote-sensing trap was conclusively similar (correlation coefficient, >0.98) to the actual pattern of adult occurrence in the trap. The result indicated that the remote-sensing trap based on the attraction of the sex pheromone lure for M. separata has a promising potential for practical use. Occurrence of M. separata adults was observed several times in 2011 and 2012, and the peaks were sharp.
Manipulation of Summer Diapause by Chilling in Matsucoccus thunbergianae (Hemiptera: Coccoidea: Margarodidae)
Lee, Jong-Hee ; Wi, An-Jin ; Park, Seung-Chan ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 349~356
DOI : 10.5656/KSAE.2013.10.0.067
A set of experiments were conducted to determine the zero temperature and total effective temperature for the summer diapause and post-diapause development of Matsucoccus thunbergianae Miller et Park (Hemiptera: Margarodidae) which infests the Japanese black pine, Pinus thunbergii. The diapausing first instar nymphs were kept in cool storage during three separate times, each starting from May 4th, June 19th, and August 15th of 2002. Cool storage temperatures were 2.5, 5.0, 7.5, 10.0, 12.5 and
. The nymphs were chilled for 10, 20, 30 or 40 days in the first two sets of experiments. In the third experiment, nymphs were chilled for 3, 6, 9 or 12 days. Molting into the second instar nymphs was examined every 10 days, starting at 20 days after taken out from the cool storage. Optimum temperature range of the diapause development was between 7.5 and
, where diapause development was completed in 40, 20, and 6 days by the insects chilled from May 4th, June 19th and August 15th, respectively. Comparing the three sets of experiments with different chilling periods, zero temperature for diapause development was calculated as
. Effective temperature for diapause development was 964 degree days, and it was estimated that nymphs completed their diapause development by September 8th in nature. Under natural temperature conditions >50% eclosion into the second instar occurred on November 9th. Zero temperature for post-diapause development was
, and total effective temperature for post-diapause development until the molt into the second instar was 391 degree days.
Dissemination of Bacillus Subtilis by using Bee-vectoring Technology in Cherry Tomato Greenhouses
Park, Hong-Hyun ; Kim, Jeong Jun ; Kim, Kwang-Ho ; Lee, Sang-Guei ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 357~364
DOI : 10.5656/KSAE.2013.10.0.055
Bee-vectoring is a new crop protection technology used for suppressing insect pests and diseases in crops by disseminating microbial agents into plants during bee pollination activities. In this study, we conducted bee-vectoring trials in cherry tomato greenhouses by using the bumble bee (Bombus terrestris), a microbial agent (Bacillus subtilis) and a new dispenser, and we measured the delivered quantity of microbial agent. Bacterial colony forming units (CFUs) in bees exiting a dispenser ranged from
per bee. At greenhouse trials in the National Academy of Agricultural Science (NAAS) trials, 3,300 - 8,500 CFUs per flower were counted and 80 - 100% of the flower samples contained detectable concentrations. There was no significant difference in CFU density between microbial replacement intervals (once a week vs twice a week) in the NAAS trials. In a commercial greenhouse trial, 1,800 - 2,400 CFUs per flower were found, and 83 - 93% of the flower samples contained detectable concentrations. CFUs detected in bee-vectored flowers increased by approximately 75 times before bee-vectoring. The mortality of bumble bees in the NAAS trials was, on average, 22% and little negative effects were observed on the bumble bee colonies. The yield difference for cherry tomatoes in the NAAS trials was not significant between treatments. When we select additional microbial agents that can be disseminated using this technology and create a detailed plan based on insect pests and disease incidence, we can apply this technology in greenhouses for growing tomatoes and strawberries in the near future.
Molecular Diagnosis of Grapholita molesta and Grapholita dimorpha and Their Different Occurrence in Peach and Plum
Ahn, Seung-Joon ; Choi, Kyung-Hee ; Kang, Taek Jun ; Kim, Hyung Hwan ; Kim, Dong-Hwan ; Cho, Myoung Rae ; Yang, Chang Yeol ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 365~370
DOI : 10.5656/KSAE.2013.11.0.072
The plume fruit moth, Grapholita dimorpha Komai, a fruit tree pest occurring in the northeast Asia, was firstly reported to infest apple in Korea in 2009, but its direct damage to other fruit trees has been poorly studied. In this study, we investigated shoots and fruits of both peach and plum trees and compared their damage rates by G. dimorpha to those by G. molesta, a congeneric species. In order to discriminate the two moth species, we developed a molecular diagnosis method using species-specific primer sets on different PCR conditions and distinguished the two species collected from the damaged shoots or fruits. The shoots and fruits of peach were infested mostly by G. molesta. However, in plums, the shoots were damaged by G. molesta and the fruits mostly by G. dimorpha. In addition, these two species showed a clear difference in host preference in fruit damage, where 92.5% of the Grapholita moths collected in peach fruits were identified as G. molesta, but 97.0% of the moths in plum fruits were G. dimorpha. The difference of the damage between the two fruit trees may give important information for monitoring of the two moth species in these orchards.
Preference of Adult Alfalfa Weevil, Hypera postica (Gyllenhal), (Coleoptera: Curculionidae), to Different Seedlings of Upland Crops
Bae, Soondo ; Kim, Hyunju ; Mainali, Bishwo Prasad ; Yoon, Youngnam ; Lee, Geonhwi ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 371~377
DOI : 10.5656/KSAE.2013.10.0.054
Occurrence of adult alfalfa weevil, Hypera postica Gyllenhal, was observed at Chinese milk vetch field, and host plant preference of its
generation adult was observed at greenhouse and Chinese milk vetch field. The over-wintered adult of the weevil appeared from late March and peaked in mid April while the
generation adult appeared from late April and peaked in late May. However, the occurrence of over-wintered adult was very low contrary to the
generation adult which was very high with some variations among observed years. In greenhouse, host plant preference of
adult generation of H. postica was evaluated with 11 different seedlings. H. postica was found to occur in significantly higher number on Chinese cabbage seedling followed by soybean, and kale at 7 days after releasing(DAR). Corn, crown daisy and sorghum were found to be the least preferred with nil occurrence of the weevil. Seedlings damage rate by H. postica feeding at 7DAR was the most severe on Chinese cabbage(60.0%) followed by soybean(50.0%), kale(30.0%), foxtail millet(16.7%), proso millet(13.3%) and lettuce(3.3%) significantly. Also, seedlings damage rate by H. postica at 7DAR in Chinese milk vetch field had shown the similar trend with Chinese cabbage(46.7%), soybean(43.3%), kale(23.3%), foxtail millet(13.3%) and proso millet(13.3%) in greenhouse significantly. Accordingly, results on host plant preference of H. postica from this study can be used as a basic information for safe cultivation of upland crops at near or around green manure crop field.
A Case Study for Intergrated Pest Management of Frankliniella occidentalis and Aphis gossypii by Simultaneously Using Orius laevigatus and Aphidius colemani with Azoxystrobin in Cucumber Plants
Choi, Yong-Seok ; Whang, In-Su ; Han, Ik-Soo ; Kim, Young-Chil ; Choe, Gwang-Ryul ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 379~386
DOI : 10.5656/KSAE.2013.11.0.077
Aphidius colemani and Orius laevigatus aree natural enemies of the control cotton aphid and western flower thrips, which are the major pests of cucumber plants. We evaluated the low toxicity of 47 fungicides against A. colemani and O. laevigatus, and we investigated the simultaneous effect of the natural enemies with fungicide of low toxicity on the pests. The toxicity of DBEDC, hexaconazole, pyraclostrobin, tribasic copper sulfate, triflumizole, chlorothalonil, flusilazole, folpet, carbendazim+diethofencarb, cymoxanil+fenamidone and trifloxystrobin to A. colemani mummies was more than 50% and to O. laevigatus was low toxic. Among the fungicides with low toxicity, azoxystrobin 20% WP was selected because it could be used simultaneously with A. colemani and O. laevigatus and as a fungicide to control powdery mildew and downy mildew. In 2011, the densities of western flower thrips and cotton aphid increased rapidly in early-May in Gongju and Cheonan, Chungnam Province. When azoxystrobin was used at an interval of 10 days in spring, A. colemani and O. laevigatus were released at an interval of 7 days at the early occurrence of the pests. The natural enemies decreased the densities of the pests; the maximum number of A. colemani mummies was 18 per lower leaf, and the maximum number of O. laevigatus was 0.5 per flower. Azoxystrobin did not influence the densities of A. colemani and O. laevigatus. The results show that the selected fungicides can be used with A. colemani and O. laevigatus for the intergrated pest management of cotton aphid and western flower thrips in cucumber polyvinyl house cultivation.
Temperature-dependent Development Model of Larvae of Mealworm beetle, Tenebrio molitor L. (Coleoptera: Tenebrionidae)
Koo, Hui-Yeon ; Kim, Seon-Gon ; Oh, Hyung-Keun ; Kim, Jung-Eun ; Choi, Duck-Soo ; Kim, Do-Ik ; Kim, Iksoo ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 387~394
DOI : 10.5656/KSAE.2013.11.0.066
The developmental times of mealworm beetle larvae, Tenebrio molitor were studied at six temperatures ranging from 15 to
with 60~70% RH, and a photoperiod of 14L:10D. Mortality of larval period was very low at 17 and
but did not die over
. Developmental time of larva was decreased with increasing temperature. The total developmental time of T. molitor larvae was longest at
(244.3 days) and shortest at
(110.8 days). Egg and larvae were not developed at
. The lower developmental threshold and effective accumulative temperatures for the total larval stages were
and 2564.1 degree-days, respectively. The relationship between developmental rate and temperature was fitted by a linear model and nonlinear model of Logan-6(
=0.95). The distribution of completion of each development stage was well described by the 2-parameter Weibull function (
Assaying Mitochondrial COI Sequences and Their Molecular Studies in Hexapoda, PART I: From 2000 to 2009
Lee, Wonhoon ; Park, Jongsun ; Akimoto, Shin-Ichi ; Kim, Sora ; Kim, Yang-Su ; Lee, Yerim ; Kim, Kwang-Ho ; Lee, Si Hyeock ; Lee, Yong-Hwan ; Lee, Seunghwan ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 395~402
DOI : 10.5656/KSAE.2013.11.0.078
Since 2000, a large number of molecular studies have been conducted in Hexapoda with generating large amount of mitochondrial sequences. In this study, to review mitochondrial COI sequences and their molecular studies reported in Hexapoda from 2000 to 2009, 488 molecular studies conducted based on 58,323 COI sequences were categorized according to 26 orders and the positions of COI sequences (5', 3', and entire regions). The numbers of molecular studies in which the three regions utilized varied largely among the 26 orders; however, seven orders showed preferred positions of COI sequences in the researches: Diptera and Orthoptera revealed the largest number of studies in the 5' region; while, Coleoptera, Phthiraptera, Odonata, Phasmatodea, and Psocoptera, showed the largest number of studies in the 3' region. From comparing 84 molecular studies published before 2000, we observed the possibilities that molecular studies in Coleoptera, Diptera, Phthiraptera, and Phasmatodea from 2000 to 2009 had been followed classical studies using the positions of COI sequences well-known until 1999. This study provides useful information to understand the overall trends in COI sequence usages as well as molecular studies conducted from 2000 to 2009 in Hexapoda.
Pests occurring on Cymbidium
Cho, Myoung Rae ; Jeon, Sung-Wook ; Kang, Taek Joon ; Kim, Hyung Hwan ; Ahn, Seung-Joon ; Yang, Chang Yeol ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 403~408
DOI : 10.5656/KSAE.2013.08.0.035
A survey of pest occurrence and status of farmer's pest management was conducted at 45 cymbidium farms in 10 major cultivation areas in Korea. The pest species collected from the cymbidium farms were identified as follows: Tetranychus urticae Koch, Frankliniella intonsa Trybom, Pinnaspis aspidistrae Signoret, Incilaria confusa Cockarel, Halyomorpha brevis Walker, Myzus persicae S
lzer, and Aphis gossypii Glover, Coccus hesperidum Linnaeus, Thrips flavus Schrank, and Thrips tabaci Lindeman. The two-spotted spider mite, T. urticae, was the key pest in cymbidium production, occurring on 45 farms, followed by scales (20 farms), slugs (6), thrips (8), aphids (5), and stinkbug (1). PCR-RFLP of the rDNA ITS2 region revealed that two thrips species, Thrips flavus Schrank and Thrips tabaci Lindeman, occur on cymbidium farms. Therefore, it is necessary for the cymbidium farmers to establish an integrated pest management system to meet quarantine standards.
Influence of Host-Plant Feeding on the Prey Consumption of Nesidiocoris tenuis (Hemiptera: Miridae)
Lee, Hwi-Jong ; Choi, Man-Young ; Kim, Jeong-Hwan ; Lee, Geon-Hwi ; Paik, Chae-Hoon ; Noh, Tae-Hwan ; Shim, Hyeong-Kwon ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 409~413
DOI : 10.5656/KSAE.2013.09.1.050
This study was performed to understand whether host-plant feeding had an influence on subsequent prey consumption in the zoophytophagous mirid Nesidiocoris tenuis, which has the potential for biological control of greenhouse whiteflies. Potted plants of paprika and sesame and cotton balls soaked with water were provided to the test insects for 24 h, then, frozen eggs of Ephestia kuehniella were presented to adult mirids for 24 h, and the number of eggs consumed by them was counted. No significant difference in prey consumption was observed between the mirids previously provided with water (
eggs) or paprika (
eggs), whereas those previously fed with sesame ate significantly less prey (
eggs) than the mirids that were provided with paprika or water.
Models of Forecasting the Generation Peak Time of Scirtothrips dorsalis (Thysanoptera: Thripidae) adults Based on Degree-days on Jeju Island, Korea
Hwang, Rok Yeon ; Hyun, Jae wook ; Kim, Dong-Soon ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 415~425
DOI : 10.5656/KSAE.2013.11.0.076
The yellow tea thrips, Scirtothrips dorsalis (Thysanoptera: Thripidae), has been regarded as a minor pest on citrus on Jeju Island. However, the damage of yellow tea thrips has gradually increased since 2007. This study was conducted to develop a forecasting model for generation peak time of S. dorsalis by using degree-days. Simple linear regression analysis was applied to determine the relationship between the generation number (x, dependent variable) and degree-days (y, independent variable). As a result, two regression models were established: citrus-based model (y = 310.9x + 69.0,
=0.99) and green tea-based model (y = 285.7x + 84.1,
=0.99). The models was fitted by independent data sets obtained from 2013 and evaluated using the technique of RSS (residual sum of square) and
-test. The green tea based-model showed a good fitting ability. The discrepancy between model outputs and actual data, and the practical application of models were discussed.
Prediction of Adult Emergence Time and Generation Number of Overwintered Small Brown Planthopper, Laodelphax striatellus According to RCP8.5 Climate Change Scenario
Jung, Myung-Pyo ; Park, Hong-Hyun ; Lee, Sang-Guei ; Kim, Kwang-Ho ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 427~430
DOI : 10.5656/KSAE.2013.11.0.081
Recently, climate change scenarios were substituted by the Special Report on Emission Scenarios (SRES) for Representative Concentration Pathway (RCP). Using the RCP scenario, the World Meteorological Organization (WMO) produced new climate change scenarios. Further, the National Institute of Meteorological Research (NIMR) of Korea produced new climate change scenarios for the Korean Peninsula. In this study, emergence time of small brown planthopper (SBPH), Laodelphax striatellus and the number of generations a year were estimated during climatic normal year (1981-2010) with previous studies and they were predicted during 2050s (2045-2054) and 2090s (2085-2094) by means of RCP8.5 climate change scenario. In comparison with
Julian data in the climatic normal year, the emergence time of overwintering SBPH was predicted to be
Julian date) earlier in 2050s and
Julian date) earlier in 2090s. The SBPH was expected to produce an additional
generations in 2050s and
generations in 2090s.
Hatchability and Temperature-dependent development of Overwintered Eggs of Ricania sp. (Hemiptera: Ricaniidae)
Kang, Taek-Jun ; Kim, Se-Jin ; Kim, Dong Hwan ; Yang, Chang Yul ; Ahn, Seung-Joon ; Lee, Seong Chan ; Kim, Hyeong-Hwan ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 431~436
DOI : 10.5656/KSAE.2013.11.0.079
Ricania sp. lay eggs into the new twigs of blueberry and suck nutrients causing growth retardation and a sooty mold symptom. This study was conducted to investigate the emergence success and developmental period of overwintered eggs of Ricania sp. under the seven constant temperatures from 10 to
intervals (14L:10D). We also monitored the emergence time of the Ricania sp. nymph at blueberry by 3 ~ 4 day interval using a modified leaf clip cage. Development times from the overwintered egg to
nymph were 107.1, 54.5, 33.9, 25.3, 25.1 and 16.7 days and the emergence successes were 23.1, 30.8, 13.8, 21.7, 11.9, and 0.6% at 14, 18, 22, 26, 30 and
, respectively except at
. The developmental periods were decreased with increasing temperatures. First emergence date of the nymphs in the field was between 19 and 22 May, and the average emergence success was 19.6%. The present study might be helpful to establish the management strategy of Ricania sp. based on the biological characteristic.
Occurrence and Control Method of Riptortus pedestris (Hemiptera: Alydidae): Korean Perspectives
Lim, Un Taek ;
Korean journal of applied entomology, volume 52, issue 4, 2013, Pages 437~448
DOI : 10.5656/KSAE.2013.08.0.038
Hemipteran bugs, which were previously considered as secondary pests, have currently become important pests of numerous crops. Among them, Riptortus pedestris (Fabricius) is a major species that occurs in Korea, Japan, China, and South Asian countries. Riptortus pedestris infests leguminous crops like soybean, vetches, and red clover; fruit trees like persimmon and yuju; and grains like barley, foxtail millet, broomcorn, and sorghum. Riptortus pedestris causes the greatest damage to soybean, as it is the most suitable host for the bug. Feeding damage during pod formation significantly reduces the yield of soybean. Currently, 17 insecticides, including diazinon and etofenprox, are registered for the control of hemipteran bugs in Korea, and growers apply insecticides two to three times on a regular basis. Aggregation pheromone traps are widely used as a monitoring tool and partial control measure. The aggregation pheromone of R. pedestris attracts conspecific adults and nymphs and is used for food exploitation rather than sexual attraction. In addition, the pheromone serves as a kairomone for egg parasitoids such as Gryon japonicum (Ashmead) and Ooencyrtus nezarae Ishii. As a new method of pest management, nonviable host eggs were included in the pheromone trap to catch R. pedestris and propagate parasitoids. As a part of cultural practices, resistant soybean varieties with specific color and size of pod and control of flowering time through the alteration of planting date can be used. For the effective management of R. pedestris in the near future, development of cultural practices that can support natural control factors and the use of multiple control tactics are needed.