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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 53, Issue 4 - Dec 2014
Volume 53, Issue 3 - Sep 2014
Volume 53, Issue 2 - Jun 2014
Volume 53, Issue 1 - Mar 2014
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Effects of Humidity and Citrus Leaf Age on the Multiplication of Aculops pelekassi (Acari: Eriophyoidea) and Seasonal Population Abundances in Citrus Orchards
Seo, Yon Dong ; Kim, Dong-Soon ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 1~6
DOI : 10.5656/KSAE.2013.08.0.045
The pink citrus rust mite, Aculops pelekassi (Keifer) (Acari: Eriophyoidea), is an important pest in the citrus orchards of Jeju, Korea. This study was performed to investigate the seasonal population abundance of A. pelekassi, and the effects of humidity and citrus leaf age on the multiplication of this pest. Relative humidity (RH) significantly affected the longevity and fecundity of A. pelekassi. Longevity was 7.5, 14.5 and 14.6 d and fecundity was 5.4, 21.5, and 27.1 eggs at 33, 75 and 84% RH, respectively. The leaf age of citrus significantly affected the multiplication of A. pelekassi. The population abundance on 40 day-old leaves was much higher more than 3 times that on 10-day old leaves at 4 weeks after introduction. Overwintered A. pelekassi adults between the bud scales of the citrus trees became active in late April; they were found on newly emerged leaves, followed by their settlement on young fruits in mid-June. The population levels of A. pelekassi peaked on the leaves in late June to July, and on the fruits in early August. The results obtained in this study should be useful for the control of A. pelekassi in citrus orchards in Jeju.
Behavioral Response of the Lacewing Chrysopa cognata to both Aphis gossypii-induced Plant Volatiles and Chrysopa cognata-derived Volatiles
Cho, Jum Rae ; Lee, Min Ho ; Park, Chang Gyu ; Kim, Jeong Hwan ; Hooper, Tony ; Woodcock, Christine ; Pickett, John ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 7~13
DOI : 10.5656/KSAE.2013.09.0.028
This study was performed to investigate the response of the lacewing Chrysopa cognata to both Aphis gossypii-induced plant volatiles and lacewing-derived volatiles. The results of a Y-tube olfactometer bioassay showed that more C. cognata males were attracted to green pepper plants infected with A. gossypii than to uninfected green pepper plants alone or clean air and C. cognata males were attractive to C. cognata females. Gas chromatography-electroantennographic detection (GC-EAD) analysis showed that the antennae of C. cognata females elicited EAD-active responses to the volatiles entrained from A. gossypii-infected green pepper plants. 4-Ethylacetophenone, 3-ethylbenzaldehyde, 3-ethylacetophenone, and 4-ethylbenzaldehyde from A. gossypii-induced green pepper volatiles, and (Z,Z)-4,7-tridecadiene, (Z)-4-tridecene, and (Z)-4-undecene from C. cognata female entrainment were elucidated by further analysis using GC coupled nuclear magnetic resonance spectroscopy. Of the A. gossypii-induced plant volatiles identified in this study, 4-ethylacetophenone and 3-ethylbenzaldehyde significantly increased the attraction of C. cognata males to nepetalactol, but (Z)-4-tridecene and (Z)-4-undecene did not. (Z,Z)-4,7-Tridecadiene significantly reduced the attractiveness of nepetalactol to C. cognata.
Identification and Physiological Characters of Intestinal Bacteria of the Black Soldier Fly, Hermetia illucens
Kim, Eunsung ; Park, Jiyeong ; Lee, Sanghoon ; Kim, Yonggyun ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 15~26
DOI : 10.5656/KSAE.2013.09.0.049
The black soldier fly, Hermetia illucens, larvae may depend on indigenous bacteria in the intestine to feed and digest diverse food sources. To prove this hypothesis, we isolated and identified the intestinal bacteria of the black soldier fly for their digestive and antimicrobial abilities. The last instar larvae had long digestive tracts, which were about seven times longer than its body length. An individual of H. illucens larvae possessed a total of
bacteria in the whole intestine, of which more than 98% bacteria were located in the hindgut. Three different bacterial isolates cultured on nutrient agar (NA) medium were detected in the intestine and identified as Morganella morganii, Providencia rettgeri and Bacillus halodurans by Biolog microbial identification system. Analysis of 16S rDNA sequences of the intestinal bacteria detected the additional bacteria of Proteus mirabilis, Providencia alcalifaciens, and Providencia sp. These intestinal bacteria cultured on NA medium exhibited high resistance to 4 antibiotics and inhibited growth of other microbes which are mainly plant pathogens. Also, these bacteria exhibited catalytic activities to degrade cellulose, lipid, proteins, and carbohydrates. These results suggest that H. illucens larvae possess intestinal bacteria that may play crucial roles in their digestive physiology.
Identification and Characterization of Entomopathogenic Fungi Isolated from Bemisia tabaci in Korea
Park, Hyun-Rho ; Ryu, Young-Hyun ; Yeon, Il-Kyen ; Nam, Sung-Hee ; Kim, Dong-Geun ; Han, Myung-Sae ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 27~34
DOI : 10.5656/KSAE.2013.09.1.081
Entomopathogenic fungi were isolated from Bemisia tabaci in an Oriental melon field, and their growth characteristics, factors related to a natural outbreak, and infectivity against Bemisia tabaci, Tetranychus urticae, and Frankliniella intonsa were investigated. The isolates had erect conidiophores bearing whorls of 4-6 phialides with a swollen base where cylindrical conidia of
were attached. The isolates were identified as Isaria fumosorosea on the basis of morphological characteristics and an ITS sequence with 99% similarity. I. fumosorosea IFs-08 grew well on Sabouraud dextrose agar+yeast extract medium(3.2 mm/day/
); it grew better at
. The isolates of I. fumosorosea-IFs were highly infective and killed 93.9-96.7% B. tabaci, 84.9-92.0% T. urticae, and 81.5-84.4% F. intonsa in bioassay, whereas three isolates (Isaria tenuipes, Isaria farinosa, and Isaria fumosorosea) from KACC showed a low infectivity of 10-20%. To the best of our knowledge, this is the first report of I. fumosorosea isolated from B. tabaci in Korea.
Hyphydrus falkenstromi Gschwendtner and Sandracottus mixtus (Blanchard) (Coleoptera: Dytiscidae) new to Korea
Lee, Dae-Hyun ; Lee, Soong Hwa ; Ahn, Kee-Jeong ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 35~38
DOI : 10.5656/KSAE.2013.09.0.041
Two dytiscid beetle species, Hyphydrus falkenstromi Gschwendtner and Sandracottus mixtus (Blanchard), are identified for the first time in Korea. Hydaticus pacificus Aube previously recorded in Korea was misidentification of S. mixtus. Habitus photographs, redescriptions, and diagnostic characters with line drawings of the species are provided.
Taxonomy of Endomychidae Leach (Coleoptera: Cucujoidea) in Korea
Jung, Boo Hee ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 39~49
DOI : 10.5656/KSAE.2013.09.0.046
A taxonomic study of the fungivorous Korean Endomychidae is presented. Ten species in seven genera belonging to three subfamilies are recognized in Korea. Four species, Endomychus gorhami (Lewis), Eumorphus quadriguttatus pulchripes Gerstaecker, Lycoperdina castaneipennis Gorham, and Mycetina ancoriger Gorham, are newly recorded in Korea. Most species are associated with the fungus-grown bark, and mold contaminated materials. I provide information on host-fungi records of Korean Lycoperdina castaneipennis Gorham.
Identification of Root-lesion Nematode (Pratylenchidae: Pratylenchus ) Intercepted on Imported Plants
Kim, Dongwoo ; Chun, Jae-Yong ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 51~57
DOI : 10.5656/KSAE.2013.10.1.083
We identified the five root-lesion nematode species, Pratylenchus crenatus, P. fallax, P. kumamotoensis, P. panamaensis and P. penetrans from intercepted in quarantine inspection over the past five years. Their diagnostic characters are including number of lip annuli, stylet length, shape of the labial region, presence or absence of males, structure of lateral fields, shape of spermatheca, length of the post-vulval uterine sac and shape of tail and so forth. We described the photos, measurements and morphological characters.
Three Newly Recorded Species of the Genera Acaphylla Keifer and Calacarus Keifer (Prostigmata: Eriophyidae) from Camellia spp. (Theaceae) in Korea
Lee, Jong-Ho ; Jung, Sunghoon ; Lee, Seunghwan ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 59~64
DOI : 10.5656/KSAE.2013.11.0.062
Three species belonging to genera Acaphylla Keifer and Calacarus Keifer (Prostigmata: Eriophyidae) that cause damage to Camellia (Theaceae) plants, have been newly recorded in Korea. The three species, Acaphylla theae (Watt), Acaphylla theavagrans Kadono, and Calacarus carinatus (Green), have been redescribed and illustrated. Keys to Korean species of the genus Acaphylla; their distribution; and biological information, such as host plants and damage symptoms, are also presented.
Behavioral Response of the Western Flower Thrips Frankliniella occidentalis (Thysanoptera: Thripidae) to Different Chrysanthemum Flower Colors
Choi, Yong-Seok ; Whang, In-Su ; Park, Deog-Gee ; Lee, Jun-Seok ; Ham, Eun-Hye ; Choe, Kwang-Ryul ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 65~71
DOI : 10.5656/KSAE.2013.11.0.063
Frankliniella occidentalis is attracted to flowers and is a major pest of chrysanthemums. Even when some chrysanthemum plants are not flowering, the ones that have already flowered attract F. occidentalis. Therefore, we investigated the efficacy of chrysanthemum as a trap plant that attract F. occidentalis by using an olfactometer. The numbers of F. occidentalis collected from the flowers of pink, wihte and yellow standard chrysanthemums on a tray with wet paper during the flowering period were 18.4, 56.6, and 52.6 respectively; the numbers of F. occidentalis collected from leaves were 7.8, 16.6, and 15.4 respectively. the numbers of F. occidentalis collected from the buds of pink, white and yellow standard chrysanthemums were 15.2, 45.8, and 41.6 respectively; the numbers of F. occidentalis collected from the leaves were 2, 8.8 and 3.4 respectively. In the Y-tube olfactometer test, the number of F. occidentalis attracted to the 2-way arms of the Y-tube was not significantly different for the yellow, red, violet and white flowers. In the four-choice olfactometer test, when the same visual cues and odor cues were provided, the frequency of F. occidentalis was higher in the yellow (10.7) flowers than in the red (1.3), violet (3.7) and white (2.0) flowers. When visual cues with disturbed odor cues, F. occidentalis preferred yellow (10.0) color over red (3.3), violet (1.3) and white (3.0) colors. When the same visual and odor cues, except for yellow visual cues, were provided, F. occidentalis preferred white (8.3) color over red (4.7), violet (4.7) and yellow (2.0) colors. Therefore, F. occidentalis were attracted to buds before the flowering of chrysanthemum plants and attracted to yellow flowers after the flowering.
A Postharvest Control Technique of the Oriental Fruit Moth, Grapholita molesta, Infesting Apples Using CATTS
Jung, Choongryul ; Kwon, Kimyeon ; Kim, Yonggyun ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 73~80
DOI : 10.5656/KSAE.2014.01.1.069
Postharvest insect pest control is necessary for agricultural industry including domestic consumer markets and exporting products to meet quarantine issue. Especially, the organic or environmentally friendly agricultural products do not fit to the traditional chemical postharvest treatments mostly using methyl bromide. As an alternative, a physical treatment called CATTS (controlled atmosphere and temperature treatment) has been developed to control various insect and mite pests on apple and several stone fruits. This study was designed to determine the CATTS conditions to control the oriental fruit moth, Grapholita molesta, which is restricted in exporting the infested apples. To apply CATTS on this insect pest, the most heat-tolerant stage was determined. Among the immature stages locating on the fruits, the fifth instar larvae were the most tolerant to
for 20 min. The ramping rate (the time to increase chamber temperature from
) was positively correlated with the CATTS efficiency under 15%
. After the ramping step, the duration of CATTS was positively correlated with CATTS efficiency. In addition, the CATTS efficiency was highly dependent on the fruit internal temperature at
. From all these parameters, we developed a standard protocol yielding 100% control efficiency of CATTS against apples infested by 4,378 larvae including 2,104 fifth instar individuals.
A Review of the Genus Nacoleia (Lepidoptera, Crambidae) from Korea, with Two Newly Recorded Species
Kim, Sung-Soo ; Bae, Yang-Seop ; Byun, Bong-Kyu ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 81~84
DOI : 10.5656/KSAE.2014.01.0.003
A total of six species of the genus Nacoleia is recognized from Korea. Among them, two species, Nacoleia inouei Yamanaka, 1980 and Nacoleia satsumalis South, 1901 are reported for the first time from Korea. All the known species were enumerated with their available information including the collecting localities, the distributional ranges and host plants.
Molecular Identification of Meloidogyne spp. in Soils from Fruit and Vegetable Greenhouses in Korea
Kim, Se-Jong ; Yu, Yong-Man ; Whang, Kyung-Sook ;
Korean journal of applied entomology, volume 53, issue 1, 2014, Pages 85~91
DOI : 10.5656/KSAE.2013.09.0.052
In this study, we analyzed the phylogenetic characterization of root-knot nematodes (Meloidogyne spp.) in soils from fruits and vegetables greenhouses in Korea. Soil samples were collected from 12 greenhouse fields in which tomato, cucumber, watermelon, and Oriental melon were being cultivated. Meloidogyne spp. were detected in all the soil samples at an average number of
nematodes/300 g of soil to
nematodes/300 g of soil. Phylogenetic analysis using polymerase chain reaction-restriction fragment length polymorphism was attempted for the second-stage juveniles (J2) of Meloidogyne spp. collected from the greenhouse soils. Twelve Meloidogyne spp. from the greenhouse soils were classified into two groups by using HinfI digestion of mitochondrial DNA, resulting in 900, 410, 290, and 170 bp fragments (group A) and 900, 700, and 170 bp fragments (group B). Phylogenetic analysis based on mitochondrial DNA sequences (1,483-1,521 bp) showed that nine group A isolates were identified as Meloidogyne incognita (99.73-99.93%) and three group B isolates showed 99.54-99.73% similarity to Meloidogyne arenaria.