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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 42, Issue 4 - Dec 2003
Volume 42, Issue 3 - Sep 2003
Volume 42, Issue 2 - Jun 2003
Volume 42, Issue 1 - Mar 2003
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Morphological Characteristics, Developmental Period, Seasonal Occurrence, and Sweetpotato Consumption of Aedia leucomelas (L.) (Lepidoptera Noctuidae)
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 1~7
Morphological characteristics, developmental period, and seasonal occurrence of Adeia leucomelas (L.) were investigated from 1999 to 2000. In addition, consumption of sweetpotato as food was also examined. Adults of A. leucomelas were dark-brown and body lengths of females and males were 20.2 mm and 18.9 mm, respectively, Wing expanse of female and male was 33.7 mm and 29.4mm, respectively. Egg was flat round-shape. Larva was light yellow-green to dark-brown with 3.3-53.5 mm. Pupa was deep-brown and 15.1 mm in length. Developmental periods of A. leucomelas from egg to adult emergence at different temperatures of 15, 20, 25, and 30
C were 108.5, 70.7, 40.2, and 29.1 days, respectively, Developmental threshold (DT) and effective accumulative temperatures were estimated as 10.7
C and 67.5 DD in egg stage, 11.0
C and 275.1 DD in larval stage and 9.3
C and 244.6 DD in pupal stage, respectively. The longevity of adult female was shortened with increment of temperature, whereas the total numbers of eggs laid by a female were increased. The larvae of A.leucomelas occurred from mid-June to early October, and population reached its peak during early to mid-September in Jeonbuk province. Food consumption of A. leucomelas was highest at 20-25
C. Food consumption of 1 st, 2nd, 3rd, 4th, and 5th larvae of A. leucomelas per day at 25
C was 0.4, 3.6, 19.6, 40.7, and 78.9
Chemical Analysis of Cuticular Hydrocarbons in Apis mellifera L. and Apis cerana F.
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 9~13
Cuticular hydrocarbons of antenna, legs and wings from two species of honeybee worker of Apis mellifera L. and Apis cerana F. can be analyzed directly with gas chromatograph and GC/MS without solvent extraction. The saturated hydrocarbons identified in selected part of both species were nC22, nC23, nC25-nC3O, nC32 and nC34 except nC24. Two saturated hydrocarbons, nC26 (23.0-42.6%) and nC28 (16.8-54.8%), were major compounds in both species and others were minor compounds. A. mellifera can be distinguished from A. cerana F. by having higher proportion of nC30, nC32 and nC34 by having lower proportion of nC25 from three selected part of both species
The Genus Aulacaspis Cockerell, 1893 (Sternorrhyncha, Diaspididae) in Korea
Kwon, Gi-Myon ; Han, Man-Jong ; Lee, Yong-Hyun ;
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 15~20
Five species of the genus Aulacaspis (Sternorrhyncha, Diaspididae) from Korea were redescribed and illustrated for the morphological characters of adult females with the information of known host plants. Among them, Aulacaspis spinosa (Maskell, 1897) is reported for the first time from the Korean Peninsula. A key to species is given for the adult females.
Changes of Insect Diversity after Construction of the Insect Garden
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 21~27
This study was carried out to investigate the changes of insects diversity and host plants from 1998 to 2001 after the construction of an insect park in Suwon in Korea. After the construction in 1997 the insect species and populations have been increased yearly to date. A total of 343 species out of 138 families of 11 orders was surveyed at the park from April to November in 2001. The number of species increased from April to July and showed a peak in June. Coleoptera was a dominant order, and Dolichus halensis (Schaller) of Coleoptera, Artogeia rapae (Linne) of Lepidoptera, and Liorhyssus hyaalinus (Fabricius) of Hemiptera were dominant species.
Spatial Dispersion and Sampling of Adults of Citrus Red Mite, Panonychus citri(McGregor) (Acari: Tetranychidae) in Citrus Orchard in Autumn Season
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 29~34
Dispersion pattern for adult citrus red mite (CRM), Panonychus citri (McGregor) using by Taylor's power law (TPL) and Iwao's patchiness regression (IPR) was determined to develop a monitoring method on citrus orchards, on Jeju, in Autumn season, during 2001 and 2002.CRM population was sampled by collecting leaves and fruits. The relationships of CRM adults between leaf and fruit were analyzed by different season. The regression equation for CRM adults between leaf (X) and fruit (Y) was ln(Y+1) : 1.029 ln(X+1) (
: 0.80). The density of CRM was higher on fruit than on leaf according to fruit maturing level. TPL provided better description of mean-variance relation-ship for the dispersion indices compared to IPR. Slopes and intercepts of TPL from leaf and fruit samples did not differ between sample units and surveyed years. Fixed-precision levels (D) of a sequential sampling plan were developed using Taylor's power law parameters generated from adults of CRM in leaf sample. Sequential sampling plans for adults of CRM were developed for decision making CRM population level based on the different action threshold levels (2.0,2.5 and 3.0 mites per leaf) with 0.25 precision. The maximum number of trees and required number of trees sampled on fixed sample size plan on 2.0,2.5 and 3.0 thresholds with 0.25 precision level were 19, 16 and 15 and their critical values T
at were 554,609 and 659, respectively. were 554,609 and 659, respectively.
Development, Reproduction and Longevity of Predator Orius sauteri Poppius(Hemiptera: Anthocoridae) when Reared on Three Different Preys
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 35~41
Anthocorid bugs (Orius spp.) are known as polyphagous predators preying on thrips, aphids, mites, eggs of small insects and whiteflies. This study was conducted to investigate the nym-phal development, survival rate, longevity of Orius sauteri adult and oviposition, when nymphs of western flower thrips (Frankliniella occidentalis) and cotton aphid (Aphis gossypii), and eggs of two-spotted spider mite (Tetranychus uritcae) were fed as diets. Nymphal development of female/male O. sauferi fed with F. occidentalis, A. gossypii and T urticae took 12.2/12.8, 13.0/l3.2, and 17.9/17.8 days at 27
, respectively, Survival rates during nymphal development were 96.4, 78.4, 73.8%, longevity of female/male adults were 55.9/51.0, 30.2/30.8, and 25.8/25.1 days, and daily oviposition were 5.6, 4.1, and 1.9 eggs, respectively. Oviposition of O. sauteri fed with F. occidentalis usually began 3-4 days after emergence at 27
, and reached at its peak of 7-8 eggs female day 20-40 days after emergence
Temperature-dependent Development of Pseudococcus comstocki(Homoptera: Pseudococcidae) and Its Stage Transition Models
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 43~51
This study was carried out to develop the forecasting model of Pseudococcus comtocki Kuwana for timing spray. Field phonology and temperature-dependent development of p. comstocki were studied, and its stage transition models were developed. p comstocki occurred three generations a year in Suwon. The 1 st adults occurred during mid to late June, and the 2nd adults were abundant during mid to late August. The 3rd adults were observed after late October. The development times of each instar of p. comstocki decreased with increasing temperature up to 25
, and thereafter the development times increased. The estimated low-threshold temperatures were 14.5, 8.4, 10.2, 11.8, and 10.1
for eggs, 1st+2nd nymphs, 3rd nymphs, preoviposition, and 1st nymphs to preoviposition, respectively. The degree-days (thermal constants) for completion of each instar development were 105 DD for egg,315 DD for 1st+2nd nymph, 143 DD for 3rd nymph, 143 DD for preoviposition, and 599 DD for 1 st nymph to preoviposition. The stage transition models of p. comstocki, which simulate the proportion of individuals shifted from a stage to the next stage, were constructed using the modified Sharpe and DeMichele model and the Weibull function. In field validation, degree-day models using mean-minus-base, sine wave, and rectangle method showed 2-3d, 1-7d, and 0-6 d deviation with actual data in predicting the peak oviposition time of the 1st and 2nd generation adults, respectively. The rate summation model, in which daily development rates estimated by biophysical model of Sharpe and DeMichele were accumulated, showed 1-2 d deviation with actual data at the same phonology predictions.
Effect of Temperature on Development and Reproduction of the Rice Armyworm, Pseudaietia separata Walker (Lepidoptera: Noctuidae)
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 53~56
Development and reproduction of the rice armyworm, Pseudaletia separata Walker, were investigated under different temperatures (13, 15, 18, 20, 25, 30, and 33
). It took 80.6 days to grow from egg to pre-adult at 15
, and 27.3 days at 30
(3.0 times shorter growth period compared with that at 30
). The range of developmental temperature of rice armywom was 15-30
. Survival rate from hatched larva to pre-adult was the highest as 70.6% at 25
. Pre-oviposition period and the adult longevity were 4.2 and 12.3 days at 15
, and 2.9 and 8.0 days at 30
, respectively. The highest average fecundity per female was 816.6 at 25
. The net reproductive rate (R
o/) and intrinsic rate of natural increase (r
m/) were the highest at 25
as 913.0 and 0.175, respectively. As a result, it was considered that optimum of temperature for P. separata growth was = 25.0
Density Estimation of Rice Planthoppers Using Digital Image Processing Algorithm
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 57~63
Accurate forecasting of occurrence time and abundance of insect pests is essential for developing technology of integrated pest management system. Digital image processing algorithms were utilized to automatically recognize rice planthoppers which are major insect pests in the rice cultivation field and were subsequently used to estimate densities in the field for efficient forecasting of insect pests. To the images taken in the rice field, image decomposition, top-hat transformation, threshold, and minimum and maximum filter were implemented for patterning individually the brown planthopper specimens attached at the bottom area of rice stems. In average 95.8cio of images were correctly recognized for estimating densities by the developed system, and the recognition rate was higher than that obtained from direct observations by experienced observers. Furthermore, the size of the recognized specimens was measured and was used for estimating the age structure in the observed brown planthopper populations
Identification of Metarhizium sp. Isolated from Protaetia brevitarsis seulensis (Kolbe) Using Ribosomal DNA Sequence
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 65~70
For the purpose of the protection of beneficial insects from pathogens and the development of control agent against pests, a strain of Metarhizium sp. was isolated from the infected Protaetia brevitarsis seulensis larvae in Korea. Under the scanning electron microscope, the isolate, Metarhizium sp. KMA-1, showed distinct formation of conidia on the palisade-like masse which were comprised of elongate chains and this shape is a typical feature of Metarhizium species. PCR techniques were used to identify the isolate and the primers used were designed on the basis of two kinds of rRNAs sequences, 28S rRNA and internal transcribed spacer(ITS). The specific PCR products from each primer set were amplified and the DNA sequences were determined for the similarity comparison. Sequence alignment of these fragments using GenBank database resulted in the highest homology similarity between the isolate Metarhizium sp. KMA-1 and M. anisopliae. From these results, the isolate Metarhizium sp. KMA-1 in this study was identified as M. anisopliae.
Report on Mycophila speyeri Barnes (Diptera: Cecidomyiidae) as a Pest of Mushroom Cultivation in Korea
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 71~75
A paedogenetic gall midge, Mycophila speyeri Barnes (Diptera: Cecidomyiidae) was newly found on the cultivated oyster mushroom, Pleurotus ostreatus Hummer in Korea. Brief morphological characteristics are described.
A Report on the Occurrence of Yellow Locust Midge Obolodiplosis robiniae(Haldeman, 1987) from Korea
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 77~79
Obolodiplosis robiniae (Haldeman, 1987) (Diptera: Cecidomyiidae), a pest species on a black locust tree, which was originally distributed in North America, is newly recorded from Korea. The specimens were collected from the central Korea. Morphological diagnoses of the both sexes and the symptoms on the host plants are provided.
Biological Control of Aphids on Cucumber in Plastic Green Houses Using Banker Plants
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 81~84
Biological control of aphids using "banker-plants with the parasitoiid, Aphidius colemani Viereck (BPAC)" was carried out on cucumber in greenhouse. The BPAC consisting of barley seedlings infested with Schiraphis graminum (Rondani) enhanced the early establishment of Aphidius colemani in the greenhouse and prolonged the control of Aphis gossypii on May 8, 2001 The BPAC was placed in the greenhouse at transplanting at the rate of 1 per 30 m2 of cucumber. Although good control effect was gained until early August after placing banker plants on May 9, the effect after then because of high temperature. The aphid population on cucumber in control plots reached to a peak on June 26, and decreased because of entomopathogenic fungus for rainy season of July, and increased again to a very high population on August.
Current State of Pesticide Application in Sweet Persimmon Orchards in Korea
Korean journal of applied entomology, volume 42, issue 1, 2003, Pages 85~89
Current status of pesticide applications in sweet persimmon orchards was investigated through the questionnaire and analysis of the pesticide application records from 62 growers in 2000 and 17 growers in 2001 in Jinju, Sacheon, Changwon, Changyoung, and Gimhae in Korea. Average yearly application was 7.6 times in 2000 and 7.7 times in 2001, concentrated in June and July. The kinds of fungicides and insecticides used were 36 and 34 items in 2000, and 22 and 23 items in 2001, respectively. Application of pesticides was mostly finished by mid-September. Fungicides such as mancozeb, thiophanate-methyl, and benomyl were most frequently used in 2000, and lime sulfur, benomyl and carbendazim in 2001. Insecticides such as deltamethrin, methidathion, and fenitrothion + fenvalerate were frequently used in both years. About one-half of the pesticides being used by the growers was not registered for persimmon in Korea.