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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 31, Issue 4 - Dec 1992
Volume 31, Issue 3 - Sep 1992
Volume 31, Issue 2 - Jun 1992
Volume 31, Issue 1 - Mar 1992
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Toxicological Test Methods and AChE Inhibition of Organophosphorus Acaricides of Twospotted Spider Mite, Tetranychus urticae
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 1~6
These studies were carried out to compare toxicological test methods of two spotted spider mite, Tetranychus urticae Koch,; and to investigate relationship between in vivo resistant level of highly acaricide-selected population, and in vitro insensitivity of the AChE in the same population to carbophenothion and ethion. The slide dip method (CV = 8.7%) was of more accuracy and suitability than that of the leaf dip method(CV=12.2%) and leaf disc method (CV= 13.6 %) in determination of the resistant levels of twospotted spider mite to acaricides. The slide dip method also had the advantages of simple treatment with different populations on a slide at the same time, standardization of post-treatement conditions and living plants exclud¬ed from the test. Even though the topical application method(CV =8.1 %) showed high accuracy, it had the demerits of the much time consuming, need of expensive equipment and difficulty of test manipulation. For a limited time, the 22nd successive carbophenothion-selected population of two-spotted spider mite showed 156- and 128-fold resistant levels to carbophenothion and ethion(both alPs), respectively. However, the 24th successive ethion-selected population revealed 64.1- and 65-fold resistant levels to ethion and carbophenothion, respectively. In the inhibition of AChE activity, the carbophenothion-selected population showed 3.3- and 2.7-fold insensitivity in AChE activity to carbophenothion and ethion, respectively. Likewise, the ethion -selected population exhibited 3- and 2.6-fold insensitivity in AChE activity to carbophenothion and ethion, respectively, as compared with that of susceptible population. As a result, a good relation was recognized between in vivo resistance to organophosphorous acaricides and in vitro insensitivity of the AChE to corresponding inhibitors.
Classification of the Family Pipunculidae from Korea(Diptera) part 3. A new species of the genus Nephrocerus Zetterstedt from North Korea
Milan Kozanek ;
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 7~9
As the third series of the systematic survey on the Korea Pipunculidae, a new species, Nephrocerus paektusanensis. nov., from North Korea is described here.
Soil Micro-arthropods Fauna in Plantations of the Korean White pine (Pinus koraiensis) -1. Composition of Oribatid Mites(Acari: Cryptostigmata)-
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 10~22
Oribatid mites communities at plantations of the Korean white pine (Pinus koraiensis) were investigated for the composition and distribution at the Sudong area, Namyangju-gun, Kyung-gido, Korea. Oribatid mites collected were classified into 38 families, 64 genera, and 109 species. Among them the eurysphere, stenosphere, and sporosphere species were 35, 49, and 25 species, respectively. The species diversity of oribatid mites increased at sites from 3 years after to 5 years after transplanting and then decreased by afforested years. The dominant species of oribated mites at the surveyed areas were 6 species including Ceratozetes japonicus. Number of dominent species and recessive species decreased by afforested years. However, influential species increased. According to the MGP analysis I, type G was found in all sites. The eurysphere and the sporosphere species were type G. The stenosphere species were type P at an earlier planting stage, type G at a middle planting stage, type M at a latter planting stage. The semieurysphere species were type M. According to the MGP analysis II, site 1, 2, and 4 were type G, but site 3, 5, and 6 were type P.
Seven Species of Tortricinae (Lepidoptera ; Tortricidae)
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 23~32
Seven species of Tortricinae are reported for the first time from Korea ; Choristoneura evanidana (Kennel), Daemilus fulvus (Filipjev), Paratorna seripuncta Filipjev, Acleris nigriradix (Filipjev), A. nigrilineana Kawabe, A. cristana [Denis & Sschifferm ller] and A. logiana (Clerk). The genus of Daemilus Yasuda is new to the Korean fauna.
Mass-Rearing of Mulberry Wild Silkworm, Bombyx mandarina Moore, (Lepidoptera : Bombycidae) in Laboratory
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 33~36
To establish the succeeding generations of wild silkworms, Bombyx mandarina Moore, massrearing was made in the laboratory. The rearing result was good under high humidity and moderately warm condition. Larval periods were 15 to 25 days and the most of larval period was around 17 days. The pupation rate and the pupal period of most of males and females were 40% and 13 to 25 days, respectively. There were two emergence peaks of males and females, and males emergence peak occurred two or three days faster than females.
Morphometric Variations of a Populations of the Whitebacked Planthopper, Sogatella furcifera Horv th (Homoptera : Delphacidae), from Korea, China, and the Philippines
;R.C. Saxena;A.A. Barrion;G.R. Wu;
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 37~44
Morphometrics of the sensory appendages for host plant discrimination such as antenna, leg, rostrum of S. furcifera sampled from Korea, China, and Philippines were determined and compared. Computed discriminant scores of 89 characters produced scatter diagrams and group centroids revealing discrete segregations of the three populations.
Control of Beet Armyworm, Spodoptera exigua Hubner (Lepidoptera : Noctuidae), using Synthetic Sex Pheromone I. Control by Mass Trapping in Allium fistulosum Field
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 45~49
Studies were conducted to control Spodoptera exigua in Allium fistulosum field using synthetic sex pheromone trap. Heavily, medium and lightly damagd fields at early transplanting time showed no differences in control effects after 8 weeks of establishment of pheromone traps in Allium fistulosum fields. Number of damaged leaves in each treated field was 0.2-3 individuals per 60 hills comparing with 33.2 individuals at non-treated field. Also, the numbers uf male adults attracted to pheromone traps were 1.8-5.0 individuals at the big inning of installation but increased to 25.8, 49.9, 74.9, and 77.4 individuals after 2, 4, 6, and 8 weeks, respectively. There was a negative correlation between amount of male adults attracted to pheromone traps and number of damaged leaves (r=-0.9572*). Number of adults attracted to various colored light trap for 30 days were 6 in red, 11 in white and none in blue comparing with 1,041 individuals in pheromone trap.
Nematodes Associated with Forest with Forest Trees in Korea I. Studies on Nematodes Associated with Saplings
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 50~68
The results of survey on the nematodes associated with sapling from 8 Forestry Experiment Stations(F.E.S.) in Korea are reported herein. A total of 35 species under 20 genera, 11 families, and 2 orders were identified from the soils around the roots of 119 tree species and amongst them, Xiphinema insigne is unrecorded species for Korea and Geocenamus sp. is a new species. Tylenchorhynchus claytoni, which showed the highest detection rate (D.R.) from all F.E.S., except Nambu F.E.S, was the dominant species among the nematodes associated with saplings. The D.R. of T. claytoni was the highest in Ch’ungnam F.E.S. by 100% from 15 saplings sampled, followed by 87.5% in Kangwon, 66.6% in Kyongbuk, 58.3% in Cheonbuk, 48.1% in Ch’ungbuk, 41.3% in Kyongki, and 40% in Cheonnam F.E.S. Other important nematode species which showed very high densities by stations are; Criconemella morgensis (D.R.: 37.5%), Helicotylenchus digonicus (D.R. : 35%), Pararotylenchus pini (D.R.: 37%), Tylenchorhynchus nudus (D.R.: 37.9%), Criconemella informis (D.R.: 27.5%), and Meloidogyne sp. (D.R.: 12.5), from Chunbuk, Chunnam, Ch’ungbuk, Kyongki, and Kangwon F.E.S., respectively.
The Changes of Occurrence Patterns of Major Rice Insect Pests in Korea
Korean journal of applied entomology, volume 31, issue 1, 1992, Pages 69~78
The extensive cultivation of new yielding varieties might give some distruption to the rice insect pest complex in Korea The population of Nephottetix cincticeps and Laodelphax striatellus has decreased in number since the extensive cultivation of new varieties, Tongil lines, in 1976. During the last 23 years, the rice insect pest population except for Chilo suppressalis drastically decreased, however, C. suppressalis population increased again in recent years. This tendency seems to be very closely correlated with the cultivation of new varieties, and a lot of fertilizations and insecticides applications.