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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
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Volume & Issues
Volume 54, Issue 4 - Dec 2015
Volume 54, Issue 3 - Sep 2015
Volume 54, Issue 2 - Jun 2015
Volume 54, Issue 1 - Mar 2015
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Enhancement of Bt-Plus Toxicity by Unidentified Biological Response Modifiers Derived from the Bacterial Culture Broth of Xenornabdus nematiphila
Park, Youngjin ; Kim, Minwoo ; Kim, Kunwoo ; Kim, Yonggyun ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 55~62
DOI : 10.5656/KSAE.2015.03.1.073
'Bt-Plus' has been developed by mixing spores of Bacillus thuringiensis (Bt) and culture broth of Xenorhabdus nematophila (Xn). Despite its high toxicity, it has some imitation to broaden its efficacy against diverse insect pest spectrum. This study focuses on enhancement of Bt-Plus toxicity against semi-susceptible insect, Spodoptera exitgua, by addition of Xn metabolites. Two main Xn metabolites, oxindole (OI) and benzylideneacetone (BZA), are known to enhance the Bt insecticidal activities. The addition of OI or BZA significantly increased Bt-Plus pathogenicity. However, when the freeze-dried Xn culture broth was added to Bt-Plus, much less amount was enough to enhance the toxicity compared to the amount of OI or BZA. An HPLC analysis indicated that there were more than 12 unidentifed bacterial metabolites in Xn culture broth. These suggest that there are potent biological response modifiers in Xn metabolites other than OI and BZA.
A Taxonomic Review of the Genus Laccophilus Leach (Coleoptera: Dytiscidae: Laccophilinae) in Korea
LEE, Dae-Hyun ; AHN, Kee-Jeong ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 63~71
DOI : 10.5656/KSAE.2015.03.1.069
A taxonomic review of Korean Laccophilus Leach is presented. Five species are recognized, three of which [L. hyalinus (De Geer), L. lewisius Sharp and L. minutus (
)] previously recorded in Korea are incorrect identification of L. vagelineatus Zimmermann, L. lewisioides Brancucci and L. difficilis Sharp, respectively. Habitus and SEM photographs, key and diagnoses of the species are provided.
Construction and Evaluation of Cohort Based Model for Predicting Population Dynamics of Riptortus pedestris (Fabricicus) (Hemiptera: Alydidae) Using DYMEX
Park, Chang-Gyu ; Yum, Ki-Hong ; Lee, Sang-Ku ; Lee, Sang-Guei ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 73~81
DOI : 10.5656/KSAE.2015.03.0.007
A Cohort based model for temperature-dependent population dynacmics of Riptortus pedestris was constructed by using a commercial software (DYMEX) and seasonal occurrence along with pesticide treatments effect was simulated and validated with pheromone trap data. Ten modules of DYMEX software were used to construct the model and Lifecycle module was consisted of seven developmental stages (egg, 1 - 5 nymphal instars, and adult) of R. pedestirs. Simulated peaks of adult populations occurred three or four times after the peak of overwintered populations which was similar to those observed from pheromone trap catch. Estimated dates for the second peak were quite similar (1-2 day difference) with those observed with pheromone trap. However, the estimated dates for the first population peak were 9-16 days later than the observed dates by pheromone trap and the estimated dates for the last peak were 17-23 days earlier than the observed dates. When insecticide treatments were included in the simulation, the biggest decrease in R. pedestris adult density occurred when insecticide was applied on July 1 for the first peak population: the estimated adult density of the second peak was 3% of untreated population density. When insecticide was assumed to be applied on August 30 for the second peak population, the estimated adult density of the following generation was about 25% of untreated population and the peak density of the following generation reached about two weeks later than untreated population. These results can be used for the efficient management strategies for the populations of R. pedestris.
Biological Activities of Five Weed Extracts against Callosobruchus chinensis L. (Coleoptera: Bruchidae)
Ahad, Md Abdul ; Nahar, Mst Kamrun ; Amin, Md Ruhul ; Suh, Sang Jae ; Kwon, Yong Jung ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 83~89
DOI : 10.5656/KSAE.2015.04.0.003
This study was conducted with n-hexane extracts of sensitive plant Mimosa pudica, mexican poppy Argemone mexicana, panimarich Leucus aspara, water pepper Polygonum hydropiper and shialmutra Blumea lacera weeds against pulse beetle Callosobruchus chinensis (Coleoptera: Bruchidae) for protection of mung bean Vigna radiata grains. The
values of the weed extracts ranged from 4.5 to 6.4, 4.1 to 5.6 and 3.6 to 5.5 g/100 mL at 24, 48 and 72 hours of post treatment, respectively. The extracts showed 35 to 69% fecundity and 33 to 63% adult emergence inhibitory effect on the pest, and revealed 13 to 49% grain protection of mung beans. Insect mortality, fecundity and adult emergence inhibitory effects, and grain protection activity increased with increased concentration of the extracts. The shialmutra followed by water pepper extracts revealed better performances in fecundity and adult beetle emergence inhibitory effect compared to the other weeds. The findings proved that the n-hexane extracts of the five weeds are sources of botanical insecticides which may be used in the integrated management of C. chinensis.
Construction of cDNA Library for Using Virus-induced Gene Silencing (VIGS) Vector with the Sweetpotato Whitefly, Bemisia tabaci(Hemiptera: Aleyrodidae)
Ko, Na Yeon ; Lim, Hyoun Sub ; Yu, Yong Man ; Youn, Young Nam ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 91~97
DOI : 10.5656/KSAE.2015.04.0.004
The sweetpotato whitefly, Bemisia tabaci, is the major insect pest that transmitted over 100 plant viruses including tomato yellow leaf curl virus (TYLCV) of tomato plant as virus vector in the world. In this study, cDNA library of whitefly was constructed using Gateway system for selecting target gene in order to control of B. tabaci using virus-induced gene silencing (VIGS) vector with RNAi. First of all, when using oligo d(T) rimer, the calculated titer of cDNA library was confirmed with
clones and average insert sizes was confirmed with 1 kb. However, insert size was very big for construction of cDNA. Otherwise, when using attB-N25 random primer and sonication for 6 sec, the calculated titer of cDNA library was confirmed with
clones. But mostly insert band wasn't identified on the electrophoresis, because it seemed that insert size is too small (
), also the size of identified insert was somewhat big. Finally, when using oligo d(T) primer and sonication for 1 sec, cDNA insert of whitefly was appropriated for VIGS with 300-600 bp. However, cDNA sequence included a poly A and titer was very low to
clones. It was supposed that heat shock transformation was used instead of electro-transformation. It is considered that when constructing cDNA library for using VIGS vector, (1) random primer should be used for First strand cDNA synthesis in order to remove poly A and (2) sonication for 1 sec should be performed in order to get appropriated insert size and (3) electro-transformation should be performed in order to improve transformation efficiency.
Evaluation of Insecticidal and Antifeeding Activities of Eco-friendly Organic Insecticides Against Agricultural Insect Pests
Kim, Yoo Hwa ; Na, Young-Eun ; Kim, Min Joon ; Choi, Byung Ryul ; Jo, Hyeong-Chan ; Kim, Soon-Il ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 99~109
DOI : 10.5656/KSAE.2015.05.0.020
Insecticidal and antifeeding activities of 29 commercialized eco-friendly organic products for managing plant diseases and insect pests against Plutella xylostella larvae, Spodoptera exigua larvae, Frankliniella occidentalis adults, and Myzus persicae adults were tested using spraying and leaf dipping bioassays under laboratory conditions. Products containing 60% Sophora extract (EOIS) and mixtures (EOISm) with Sophora extract, Stemona japonica extract, Melia azedarach extract, and Nepeta cataria extract as well as mixtures (EOISc) with Sophora extract, Chenopodium ambrosioides extract, and Melia azedarach extract as active ingredients showed strong insecticidal activity at recommended concentration against P. xylostella larvae. At half concentration, their insecticidal activities were decreased under 50%. The EOIS gave good insecticidal activity against S. exigua larvae and also showed 85% and 95% insecticidal activity at 24 and 48 hours after treatment to F. occidentalis adults, respectively. For M. persicae adults, EOISm and mixtures (EOIR) containing rape seed extract, neem extract, and castar oil produced 93% and 68% insecticidal activity, but their activities did not be increased at double concentration. EOISm only showed 100% contact toxicity against M. persicae adults exposed to dipping leaves. Interestingly, the insecticidal activity of EOIR and EOICi (citronella oil and derris extract) against M. persicae adults was increased with exposed time and concentration. In addition, EOICe (cedar oil), EOIS, EOISm, EOISc, EOIM (microorganism), EOIR, EOIPe (plant extract), and EOIT (tea tree extract) gave strong antifeeding activity against S. exigua and P. xylostella larvae. EOIB, EOIBs, EOIM, EOICi, and EOIMc showed above 70% antifeeding activity to the lepidopteran larvae. These results indicate that mixtures containing 2 to 3 plant extracts with Sophora extract show good activities against insect pests, although the difference of insecticidal and antifeeding activities was produced depending on both a tested insect species and an active ingredient or concentration.
Three New Lepidopteran Insect Pests of Persimmon Leaf in Korea
Kim, Sung Yeon ; Kim, Jeong-Min ; Jang, Miyeon ; Jang, Sin Ae ; Park, Chung Gyoo ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 111~114
DOI : 10.5656/KSAE.2015.03.1.072
We report three lepidopteran insect pests of non-astringent persimmon leaf for the first time from Korea; Hypocala deflorata (Noctuidae), Teliphasa elegans (Pyralidae), and Cuphodes diospyrosella (Gracillariidae). Larvae of these species were collected from an organic farming or abandoned persimmon orchard in Changwon and Jinju cities, Gyeongnam province, and reared for the identification in the laboratory. Some information, such as collection records, hosts, simple morphological characteristics, and ecology were introduced for each species.
Aphelinids (Hymenoptera: Aphelinidae) of Unaspis euonymi (Comstock) (Hemiptera: Diaspididae) in Korea
Suh, Soo-Jung ; Gregory A., Evans ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 115~119
DOI : 10.5656/KSAE.2015.03.1.068
Four species of aphelinids from Unaspis euonymi (Comstock) infesting Japanese spindle (Euonymus japonicus Thunb. (Celastraceae)) leaves and twigs were collected and identified as Ablerus perspeciosus Girault, Encarsia citrina (Craw), Marietta carnesi (Howard) and Pteroptrix machiaveli (Girault). Of these, Pteroptrix machiaveli (Girault) is newly documented in the Korean fauna of Aphelinidae. Brief diagnostic criteria and illustrative photographs of these species are provided and there is information on the distribution and hosts of each species as well.
Feeding Effects of Halyomopha halys (Hemiptera: Pentatomidae) on Fruit Drop and Decay Rate in Mandarin Citrus Orchards
Kim, Su bin ; Jang, Yong Seok ; Kim, Dong-Soon ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 121~125
DOI : 10.5656/KSAE.2015.04.0.010
This study was conducted to examine the feeding effect of Halyomorpha halys (
) (Hemiptera: Pentatomidae) on the fruit drop and decay rate of Mandarin citrus fruits (Citrus unshiu). The feeding of H. halys before fruit coloring caused a severe fruit drop, while the feeding after fruit coloring induced a low level of fruit drop. However, the feeding of H. halys before or after fruit coloring did not induce significant fruit decay during cold storage. The results are expected to be useful in managing H. hlays of late season mandarine, because citrus farmers follow calendar spray to prevent fruit drop and fruit decay.
New Host Records of Ichneumonidae (Hymenoptera), with List of Ichneumon Wasps Parasitizing Ivela auripes (Butler) (Lepidoptera: Lymantriidae) from Korea
Choi, Jin-Kyung ; Kim, Ki-Gyoung ; Suh, Hong-Yul ; Jeon, Mi-Jeong ; Shin, Young-Min ; Kim, Il-Kwon ; Jeong, Jong-Chul ; Kim, YoungJin ; Lee, Jong-Wook ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 127~136
DOI : 10.5656/KSAE.2015.04.0.015
We report new host records of four ichneumonids from Korea. They were discovered from the pupae of Apatura metis Frever (Lepidoptera: Nymphalidae), Allotraeus sphaerioninus Bates (Coleoptera: Cerambycidae) and Ivela auripes (Butler) (Lepidoptera: Lymantriidae) respectively. Diagnoses, illustrations, host records of the four species, and a list of ichneumon species parasitizing of I. auripes are provided.
Insect Damage to Plants and Structure of Ecological Community: Indirect Interaction Mediated by Insect Damaged Plants
Hyun, Jai-sun ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 137~144
DOI : 10.5656/KSAE.2015.04.1.030
Plants can affect adversely the interaction among herbivores by inducing insect resistance chemicals and change of attack behavior of natural enemies. Also, plants may induce favorable effects to herbivores by production of allelochemicals, nutritional variation, or morphological changes. In this review, we examined the effects of the interaction among herbivores mediated by plants and plant-response induced by insect attack, or the life history strategies of insects on the community structure of herbivore insects, and discussed its ecological significance in community level.
Corrigendum : Notes on the Genus Cosmophorus Ratzeburg (Hymenoptera: Braconidae: Euphorinae) from Korea
An, Tae-Ho ; Kim, Hyojoong ; Seo, Hong-Yul ; Kim, Ki-Gyoung ; Ku, Deok-Seo ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 145~145
DOI : 10.5656/KSAE.2015.06.3.001
Corrigendum : Notes on the Genus Asiacentistes Belokobylskij (Hymenoptera: Braconidae: Euphorinae) from Korea
An, Tae-Ho ; Kim, Hyojoong ; Kim, Ki-Gyoung ; Seo, Hong-Yul ; Ku, Deok-Seo ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 147~147
DOI : 10.5656/KSAE.2015.06.3.002
Corrigendum : The Subgenus Exosyntretus Belokobylskij of the Genus Syntretus (Hymenoptera: Braconidae: Euphorinae) from Korea
An, Tae-Ho ; Kim, Hyojoong ; Kim, Ki-Gyoung ; Seo, Hong-Yul ; Ku, Deok-Seo ;
Korean journal of applied entomology, volume 54, issue 2, 2015, Pages 149~149
DOI : 10.5656/KSAE.2015.06.3.003