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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
Editor in Chief :
Volume & Issues
Volume 34, Issue 4 - Dec 1995
Volume 34, Issue 3 - Sep 1995
Volume 34, Issue 2 - Jun 1995
Volume 34, Issue 1 - Mar 1995
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Control of the Beet Armyworm, Spodoptera exigua Hubner (Lepidoptera: Noctuidae), using Synthetic Sex Pheromone. II. Control Using Mating Disruption dispensers in Field
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 169~173
This study was conducted to investigate control effects against Spodoptera exigua Hubner in field using mating disruption dispensers of synthetic sex pheromone during 1993 and 1994. Denisities in egg and larva of Spodoptera exigua in field treated with the dispensers was 1.9% level of that without dispensers in welsh onion, 12.5% in red pepper and 4.4% in potato in 1993. Also 5.9% and 5.2% were counted from 10 ha and 20 ha of welsh onion field compared. Control value in Fields with dispensers were maintained at 80% level in 10 ha and 90% level in 20 ha until October.
Biological and Physiochemical structure change of Black pine bast scale (Matsucoccus thunbergianae) in coast area of Korea
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 174~180
The damage rate according to the age of black pine trees in the Black pine bast scale, Matsucoccus thunbergianae was high from 7 to 22 year old trees. According to damaged degree of damaged trees, it showed great difference in infection rate of saprophitic fungi. The period until the developmental degree of saprophitic fungi became maximized degree of 7 was required about 48 days in dead tree of 100 percent, about 54 days in one of above than 80 percent, about 75 days in one of 40~50 percent, but the dead tree less than 10 percent and health tree was retained the 3~4 developmental degree of saprophitic fungi, after 80 days. The ring width of damaged trees showed as follows. The non damaged trees was 3.52 cm, 0.77 cm in the damaged trees of 100 percent, 0.88 cm in the ones of 80 percent, 1.22 cm in the ones of 40~50 percent and 1.37 cm in the ones of les than 10 percent, respectively. Number of cells per unit area was smaller in the case of greater damaged trees, gradually. Also moisture content was very high in greater damaged trees, and bending strength was lower. Extracts by the one percent NaOH showed a small amount.
Purification and Characterization of Mitochondrial Malate Dehydrogenase during Ovarian Development in Aedes aegypti L.
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 181~190
Malate dehydrogenase in the mosquito ovary after a blood meal, Aedes aegypti, was purified and characterized. MDH purification steps involved DEAE-Sepharose, S-Sepharose and Cibacron blue affinity chromatography. The purified MDH was 70,000 daltons in molecular weight and was a homodimer consisting of tow identical subunits. Optimal activity of purified MDH was obtained pH 9.0-9.2 in malate-oxaloacetate reaction and pH 9.8-10.2, in oxaloactate-malate reaction. With obtained pH 9.0-92 in malate-oxaloacetate reaction and pH 9.8-10.2, in oxaloactate-malate reaction. With malate as substrate, purified mitochondrial MDH (1.28
M) had lower Km value than cytoplasmic MDH (8.92x
M). MDH activity was inhibited by citrate,
-ketoglutarate, and ATP. Inhibition of MDH activity by ATP and citrate was less in malate-oxaloacetate reaction and in oxaloacetate-malate reaction. MDH activity was completely inhibited by ATP in oxaloacetate-malate reaction and not inhibited by citrate in malate-oxaloacetate reaction. Temporal activity change of MDH is similar to that of isocitrate dehydrogenase in the ovary after blood feeding; their activities in the ovary began to rise at 18 hours after a blood meal, and reached at the maximal level at 48 hours.
Studies on the Distribution of Ants (Formicidae) in Korea (14) - Ants Fauna in Island. Sohuksando -
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 191~197
Faunistic survey of ant was carried out twice in April and July 1994 from Is. Sohuksando located in westsouthern area in Korea. Thirty-seven species were identified ut of Five hundred and thirty seven colonies collected. Among them, Camponotus nawai Ito and Smthistruma incerta Brown are found to be the first record from Korea.
A New Species of the Genus Romanobates (Acari:Oribatida) from Korea
Choi, Seong-Sik ;
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 198~199
The present work was carried out to describe a new species of oribatid mite (Acari:Oribatida:Oribatulidae), Romanobates maiensis, from Korea.
Insecticidal and Acaricidal Activities of African Plant Extracts against the Brown Planthopper and Two-Spotted Spider Mite
I. G. Hiremath ; Young Joon Ahn ; Soon Il Kim ; Byung Ryul Choi ; Jum Rae Cho ;
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 200~205
Total 31 samples from 21 African plant species in 13 families were tested for their insecticidal and acaricidal activities against Nilaparvata lugens (Stal) and Tetranychus urticae (Koch) adults through topical application an leaf-dipping methods, respectively. The insecticidal and acaricidal activities were both plant parts and species dependent. The methanol extracts from whole plants of Casia occidental is and Cassia tora (Caesalpinaceae), an stem of Prosopis chinensis (Mimosaceae) revealed potent insecticidal activity against N. lugens. Potnet acaricidal activity against T. urticae was obtained from the methanol extracts from whole plants of Celosia trigyna (Amaranthaceae) and Combretum micronthum (Combretaceeae), leaves of Combretm glutinotum, and leaves and fruits of prosopis chinensis.
Taxonomic Studies of Trichodoridae (Nematoda:Trichodoroidea) from Korea, with Descriptions of a New Species
Hyun Sil Baek ; Young Eoun Choi ;
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 206~217
A new species, Trichodorus jeonjuensis n. sp., resembles T. cedarus Yokoo, 1964, T. tricaulatus Shishida, 1979, and T. californicus Allen, 1957, from which it differs by male with three ventromedian cervical pores anterior to excretory pore. The spicules are straited all over and first supplement is located on half of spicules and the female has kidney shape vagina. T. tricaulatus Shishida, 1979 is newly reported from Korea. T. cedarus Yokoo, 1964 and paratrichodorus porosus (Alen, 1957) Siddigi, 1974 were found at several localities and some morphological data were compared by localities.
Morphology and Biochemcial Characteristics of a Nuclear Polyhedrosis Virus Isolated from the Oriental Tobacco Budworm, Helicoverpa assulta (Guenee)
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 218~223
A nuclear polyhedrosis virus isolated from the oriental tobacco budworm larvae, Helicoverpa assulta (Guenee) was characterized by electron microscopy, SDS-PAGE, restriction endonuclease analysis and cross infectivity. The shape of a polyhedron was
in average with icosahdral outline, and the virus particle was
in average with rod-shape. The nuclear polyhedrosis virus was contained a single nucleocapsid within a viral envelope embedded in a polyhedron. The polyhedral protein was composed of a single polypeptide with a M.W. of 31 Kd. The genome size of the virus by restriction endonuclease analysis was about 120 Kb. Among several nuclear polyhedrosis viruses, the nuclear polyhedrosis virus from Helicoverpa assulta (HaNPV) and Autographa california nuclear polyhedrosis virus (AcNPV) were infected the oriental tobacco budworm larvae.
Three Unrecorded Species of Spiral Nematode (Hoplolaimidae) from Korea
Young Eoun Choi ; Hyun Sil Baek ; Chang Hwan Bae ;
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 224~228
During the survey on spiral nematode (Hoplolaimidae) from Korea, Pararotylenchus blothrotylus Baldwin & Bel, 1981, Rotylenchus feroxcis Eroshenko, 1981 and Scutellonema conicephalum Sivakumar, 1982 were newly recorded from Korea.
Life History, Seasonal Occurrence and Natural Enemies of Caloptilia theivora (Lepidoptera: Gracillariidae) at Tea Tree Plantation
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 229~233
The life history, seasonal occurrence of larval population and natural enemies of Tea leaf roller (Caloptilia theivora (Walshingham) were investigated in field-age. C. theivora had 6 generations a year. The developmental periods from egg to adult emergence were 32.1~38.6 days in spring and fall, and 24.8~32.7 days in summer. The average longevities of adults were 8.4~14.5 days in spring and fall, and 6.3~8.6 days in summer. The average number of eggs laid by a female were 55~71 throughout the season. Larval population density of C. theivora showed 3~4 peaks from middle may in 1992 and 1993. However, population density of 194 was pretty low in early season and exhibited a peak in late September-early October. C. theivora overwintered in pupal stage on the leaves. Four hymenopterous parasitoids of C. theivora larvae were identified ; they are Stenomesius japonicus (Ashmead), Sympiesis ringoniellae Kamijo, Elasmus sp., and S. dolichogaster Ashmead which is dominant.
The Predatory Behavior of Green Mirid Bug, Cytorhinus lividipennis Reuter, on Brown Planthopper Eggs in Different Temperature Conditions
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 234~242
The functional responses of the female Cyrtorhinus lividipennis on brown planthopper (BPH), Nilaparvata lugens, eggs and their predation behavior were investigated at six temperature conditions; 20, 23, 26, 29, 32, and
. C. lividipennis was found to prefer young BPH eggs, especially 3-day-old eggs the most. The functional responses for female C. lividipennis on BPH eggs fitted the Holling's Type-I true predator-prey Rogers' (1972) model at all temperatures tested except
at which the negative Th value was produced. With the temperature increased up to 32
, the instantaneous attacking rate(a) increased from 0.1923 at
to 0.5085 at
, while the handling time (Th) was gradually decreased as low as 0.0151 at
. C. lividipenis preferred the BPH eggs laid on the upper part of rice stem when the BPH egg density was high, but there was no significant difference in the preference when the egg density was low. The preference was more obvious in high temperature conditions such as above 29
Characterization of Bacillus thuringiensis Isolated in Granary Dusts
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 243~248
In order to isolate naturally occurring novel Bacillus thuringiensis strains, we investigated the distribution of B. thuringiensis from granary which exist in Kyong-gi province, Korea. A total of 146 strains of B. thuringiensis producing spore and crystal wre isolated. The toxicity of B. thuringiensis isolates was examined against lepidopteran larvae (Bombyx mori), dipteran larvae (Culex pipiens) and coleopteran larvae (Sitophilus oryzae.), respectively. The results showed that a large number of B. thuringiensis isolates from granary dusts were isolated and most isolates wer toxic to lepidopterous larvae. Also, non-toxic B. thuringiensis isolate was common. In order to isolate many B. thuringiensis, therefore, it suggested that granary is favorable locality.
Ecology of Tetranychus kanzawai and its Natural Enemies at Tea Tree Plantation
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 249~255
These experiments were conducted to investigate the life history and the seasonal fluctuation of population density of tea red spider mite, Tetranychus kanzawai Kishida and to observe its natural enemies in the southern area. Under field-cage conditions, tea red spider mite occurred 11~12 generations. The average periods from egg to adult emergence were 8.7~13.1 days in summer and 12.6~24.9 days in spring and autumn. The average longevities of adults were 15.5~21.9 days in summer and 25.1~31.6 days in spring and autumn. The average number of eggs laid per female were 45.1 in summer and 52.6 in spring and autumn. Tea red spider mite population showed two peaks during April-June, and appeared third or forth peak during October-November. The density of all the stages was the lowest in July through August. Tea red spider mites stayed at lower parts of tea plants in March but they moved to upper parts in April though June, and they again moved to lower parts after autumn. Tea red spider mite overwintered as all stages. Adults were the dominant overwintering stage during this stage. The surveyed natural enemies of the tea red spider mite were 7 species including Amblyseius longispinosus (Evans), A. eharai Amitei et Swirski, Anystis baccarun (L), Agistemus fleschneri Summers, Orius sauteri Poppius, Oligota yasumatsui Kistner and Scolothrips sp.
Community Structure of Phytophagous Arthropods and Their Natural Enemies at Different Weed Management Systems in Apple Orchards
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 256~265
The effect ground-cover weeds on the occurrence of apple pests and their natural enemies was studied in an apple orchard in Ahnsung, Kyung-gi do during seasons of 1993 and 1994. The major apple pests and their parasitoids and predators were surveyed on the apple tree canopy in tow experimental plots; a weed-free lot where all weeds were removed by herbicide treatment, and a mowed plot where weeds were allowed restrictly by cutting with an asickle. Also, a sweep net sampling was taken from ground-cover weeds in the mowed plot. There were no significant differences in the abundance of mite and aphids between two plots, although mite densities tend to be lower in the mowed plot. The apple leaf miner, Phyllonorycter ringoniella, was significantly fewer in the mowed plot,. The densities of natural enemies of mites and aphids were slightly higher in the mowed plot. The parasitism of apple leaf miner in the mowed plot was 6~10% and 20~25% higher than that in the weed-free plot in 1993 and 994, respectively. Several natural enemies such as Apanteles kuwayamai (Braconidae), Orius sauteri (Anthocoridae), Chrysopa sp. (Chrysopidae), coccinellidae, and Eulophidae were collected both from weeds and the apple trees, However, potential apple pests were not observed on weeds. The development of insect community on the apple tree canopy was restricted by the pesticide spray on apple trees, while the insect community on weeds was maintained without significant destruction by pesticides spray on apple trees. Consequentely, the ground-cover weeds under apple trees affected occurrences of apple pests and their natural enemies in apple trees. te specialist natural enemies such as apple leaf miner's parasitoids dispersed from weeds to the apple canopy and affected apple leaf miner density significantly. However, generalist predators that have preys available on weeds stayed on weeds, hence their control effects for mites and aphids on the apple canopy were low.
Ultrastructure of the Compound Eye of the Rice Brown Planthopper, Nilaparvata lugens (StaL) (Homopteera : Auchenorhyncha : Delphacidae)
Young Nam Youn ;
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 266~277
The adult brown planthopper possesses tow oval shaped compound eyes which, on their ventral borders, curve around the base of the antennae. Compound eye of the adult brown planthopper is recognised apposition eye which each ommatidium is optically isolated from it surroundings, the rhabdoms receiving light only from their own corneal lens. Each ommatidium possesses its own dioptric apparatus formed from the cuticular cornea and an underlying crystalline cone. The retinula cells lying immediately beneath the crystalline cone have their individual rhabdomeres tightly opposed to form one central, closed rhbdom. The rhabdom stretches from the spex of the crystalline cone nearly to the basement membrane and is approximately 110~120
in length. The crystalline cone is surrounded by a pair of primary pigment cells an these in turn are surrounded by accessory pigment cells. Accessory pigment cells extend beyond the crystalline cone surrounding the retinular cells in the distal region of the eye. The crystalline cone is surrounded by the distal-most regions of the retinula cells show the presence of seven cells and sections taken proximally in the last quarter of the omatidium before the basement membrane is reached, reveal the presence of a small, eighth retinula cell which also contributes to the central rhabdom. Each ommatidium has a central rhabdom formed from the modified inner border of all of the retinula cells. Th rhabdom consists of micrvilli arising from the inner wall of each retinula cell. In cross section th microvilli exhibit a characteristic honeycomb appearance. Pigment cells comprise the primary pigment cells enveloping the crystalline cone, the accessory pigment cells extending from the inner surface of the comea to the basement membrane and the small pigment cells of the basement membrane.
Adaptation of Anisopteromalus calandrae (Hymenoptera: Pteromalidae) to an alternative host, Callosobruchus chinensis (Coleoptera: Bruchidae)
Korean journal of applied entomology, volume 34, issue 3, 1995, Pages 278~286
Adaptation of Anisopteromalus calandrae maintained on rice weevil (Sitophilus oryzae) to an alternative host, adzuki bean weevil (Callosobruchus chinensis) was studied. A. calandrae required two generations to adapt to the adzuki been weevil. Through the adaptation, the mean(
SEM) life span of th females became shorter
1.3 days at the first generation to
0.6 days at the second generation. Number of eggs laid per female increased from 29.3
6.5. Consequently intrinsic rate of natural increase and net reproductive rate were increased. The generation time and population doubling time were decreased. The searching efficiency based on functional and numerical response of A. calandrae to the adzuki bean weevil were similar to each other, but the coefficient of variation decreased with the generation, suggesting that searching efficiency became stable when the parasitoid adapted to adzuki bean weevil. No time lag was required for A. calandrae adapted to the adzuki bean weevil to adapt again to th rice weevil and the searching efficiency of the parasitoid remained on a similar level for the first generation on.