• Title, Summary, Keyword: 담배나방

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Morphological Characteristics of the Oriental Tobacco Budworm (Heliothis assulta) and the Corn earworm (H armigera) (담배나방과 왕담배나밤의 형태적(形態的) 특징(特徵))

  • Hwang, Chang-Yun;Park, Kyu-Tek
    • Korean journal of applied entomology
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    • v.25 no.1
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    • pp.33-35
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    • 1986
  • To discriminate features of H. assulta and H. armigera, this study was done in 1983. There is 7 spots on the forewing of H. armigera but not on that of H assulta. Ratios of length and width of valves were 5.6 on H. assulta and 4.3 on H. armigera. Numbers of setae on hindtibia of H. assulta and H. armigera were 8.5, 11.4, respectively.

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Comparative effects of nicotine and diazinon on larval mortality and activity of cytochrome P-450 monooxygenases in Helicoverpa assulta and Spodoptera exigua (담배나방과 파밤나방의 유충사망률과 cytochrome P-450 monooxygenases의 활성에 미치는 니코틴과 다이아지논의 영향)

  • 이정호;부경생
    • Korean journal of applied entomology
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    • v.32 no.2
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    • pp.225-235
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    • 1993
  • This study was carried out to investigate effects of diazinon, an organophosphate, and nicotine, a plant~originated toxic chemical, on larval mortality and activity of cytochrome P-45D monooxygenases, a major detoxifwation enzyme system, in Helicoverpa assulta and Spodoptera exigua. Diazinon treatment gave a higher mortaliLy to H. assulta larvae than S. exigua larvae. In contrast to the case of diazinon, nicotine caused a higher mortahty to S. exigua than to H. assulla larvae. It was partly due to the fact that nicotine induced the actiVIty of midgut cytochrome P-450 monooxygenases (MFO) more than diazinon did in If assulta larvae. When If. aSSlllta larvae were reared on their host p\am. NicotwlIa tuoocum leaves, other componentS were mostly metabolized with the exception of dietary nicotine.

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Morphology and Biochemcial Characteristics of a Nuclear Polyhedrosis Virus Isolated from the Oriental Tobacco Budworm, Helicoverpa assulta (Guenee) (담배나방 핵다각체병바이러스의 형태 및 생화학적 특성)

  • 진병래;박현우;우수동;김우진;김우진;박범석;강석권
    • Korean journal of applied entomology
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    • v.34 no.3
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    • pp.218-223
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    • 1995
  • 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 $1.0\mu\textrm{m}$ in average with icosahdral outline, and the virus particle was $65nm\times300nm$ 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.

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Activity of Mixed Function Oxidase in a few Insect Species in Relation to Their Food Source (먹이종류에 따른 몇가지 곤충의 MFO활성 비교)

  • 이정호;부경생
    • Korean journal of applied entomology
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    • v.32 no.3
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    • pp.291-299
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    • 1993
  • Midgut tissues from 4 insect specIes were exammed for the activity of cytochrome P-450 monooxygenases, a major enzyme involved in chemical detoxification. When Helicoverpa assulta larvae were reared on an artificial d;et, the specific activity of the midgut cytochrome P-450 monooxygenases (MFO) was :3 times higher than that of the fat body, The specific activity of the midgut cytochrome P-450 monooxygenases was higher in H. assul/a larvae when reared on Nicotiana tabacum leaves than when on CapsIcum annuum fruits or an artificial diet. In the case of Hyphantria cunea larvae, Tilia megaphyllo leaves were the best in inducing midgut cytochrome P-450 monooxygenases activity. When larvae of H. assulta, Spodoptera exigua, H. cunea and Spodoptera litura were reared on their own artificial diet, the highest activity was seen in S. exigua larvae which is a polyphagous and insecticide-resistant strain.

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Developmental Performance and Parasitism of Trichogramma chilonis Ishii on Eggs of the Oriental Tobacco Budworm, Helicoverpa assulta(Guenee), and the American Bollworm, Helicoverpa armigera (Hubner) Depending on Previous Hosts (명충알벌(Trichogramma. chilonis)의 사육 기주에 따른 왕담배나방과 담배나방에 대한 발육반응 및 기생률)

  • Choi, Man-Young;Kim, Jeong-Hwan;Byeon, Young-Woong;Kim, Hwang-Yong;Kim, Yong-Heon
    • Korean journal of applied entomology
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    • v.49 no.4
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    • pp.393-400
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    • 2010
  • The parasitism, development time, hatchability, and progeny production of Trichogramma chilonis(TC) females developed in eggs of Helicoverpa assulta (HAs), Cadra cautella (CC), and Helicoverpa armigera (HAr), respectively, were compared with those developed in reciprocal eggs at constant temperatures of $25{\pm}2^{\circ}C$ and relative humidity of 50~70% under 16L-8D. Developmental performances of TC reared in each of the three hosts on the following hosts(host tested) appeared differently, and were affected most by the size of the proceeding hosts and test host. Among the parameters parasitism and progeny production were affected more than others. Parasitism was significantly different between the treatments, lowest in CC-HAr($10.1{\pm}2.05%$) and highest in HAr-HAs($47.0{\pm}2.09%$), and the hatchability showed similar pattern. Development time as well was shortest in the CC-HAr where previous host is smallest and test host is biggest. The highest number of progeny production of TC was observed in HAr-HAs($93.9{\pm}6.87$ wasps), and the lowest was CC-HAs($18.4{\pm}6.36$ wasps).

Insecticidal activity of thiodicarb on lepidopterous pests (나방류에 대한 thiodicarb의 살충활성)

  • Choi, Yu-Mi;Kim, Gil-Hah
    • The Korean Journal of Pesticide Science
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    • v.8 no.1
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    • pp.16-21
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    • 2004
  • A series of experiments was conducted to determine the toxicities of thiodicarb on the six lepidopterous pests (Pseudaletia separata, Plutella xylostella, Palpita indica, Spodoptera exigua, Helicoverpa assulta, Spodoptera litura) and to elucidate factors insecticidal effects mechanism of thiodicarb. Thiodicarb was very effective against six lepidopterous young larvae, but less effective to the old larvae and it acted slowly. Thiodicarb inhibited acetylcholinesterase and glutathione S-transferase activities, but not inhibit esterase activity.

Seasonal Occurrence of Campoletis chlorideae Uchida and Its Control Efficacy on the Oriental Tobacco Budworm, Helicoverpa assulta (Guenee), in Tobacco Fields in Suwon (수원지방 담배포장에서의 Campoleits chlorideae의 발생소장과 담배나방 방제효율)

  • B.S. Nandihalli;Joon-Ho Lee
    • Korean journal of applied entomology
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    • v.34 no.2
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    • pp.147-153
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    • 1995
  • The occurrence of Oriental Tobacco Budworm (OTB), Helicoverpa assulta (Guenee), larvae in early and late planted tobacco fields showed tow or three distinct peaks. The parasitoid, Campoletis chlorideae Uchida, occurred for a short period with one peak following th second peak of OTB in early planted fields. However, in late planted fields, the parasitoid occurred as long as the OTB larvae were abundant. The OTB larval density was higher in late planted fields than in early planted fields. Among four varieties of tobacco, the OBT larval occurrence was relatively high on NC-744 throughout the season. However, more parasitoid cocoons were found in Burleyf-21 and NC-82. The seasonal occurrence of the larval parasitoid, C. chlorideae, assessed by an OTB larval release and recovery method, continued from late June to early September and relatively higher abundance was noticed from early July to late August. In a field cage evaluation of C. chlorideae as a biological control agent of OTB larvae, higher rate of C. chlorideae release (4 females/2$\m^2$) resulted in higher larval parasitism (86.1%) and less leaf damage (8.7%) in tobacco. The leaf damage by OTB larvae was significantly high in the untreatment plot (23.2%) and the lowest damage (1.6%) was recorded in the chemical treatment plot.

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반점세균병$\cdot$담배나방 (고추 장마철에 이런 병$\cdot$해충이 문제된다. - 돌림병$\cdot$검썩음병$\cdot$바이러스병$\cdot$반점세균병$\cdot$담배나방)

  • 신현욱
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.7 no.4
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    • pp.72-79
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    • 1986
  • 우리 식생활에 없어서는 안되는 양념 채소인 고추는 이른 봄부터 늦가을까지 재배기간이 긴 작물로서 특히 고온다습한 장마철에 방제하기가 어려운 병충해의 발생이 심한 것으로 장마철의 주요 병해충을 보면 돌림병(疫病)을 비롯해서 검썩음병과 바이라스, 반점세균병 그리고 담배나방을 들 수 있다. 이들 중 가장 무서운 피해를 주는 것은 연작포장에서 심하게 발생되는 역병과 고온다습한 공기를 타고 급격히 전염되는 탄저병 그리고 반점세균병과 진딧물이 매개하는 바이러스 즉, 오갈병과 연중 3$\~$4회 발생하여 피해를 주는 담배나방이 있다.

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Efficacy of an Integrated Biological Control of an Egg Parasitoid, Trichogramma evanescens Westwood, and Microbial Insecticide Against the Oriental Tobacco Budworm, Helicoverpa assulta (Guenée) Infesting Hot Pepper (고추를 가해하는 담배나방[Helicoverpa assulta (Guenée)]의 효과적 방제를 위한 쌀좀알벌(Trichogramma evanescens Westwood)과 미생물제제의 종합생물방제 효과)

  • Kim, Geun-Seob;Heo, Hye-Jung;Park, Jung-A;Yu, Yong-Suk;Hahm, Eun-Hye;Kang, Sung-Young;Kwon, Ki-Myeon;Lee, Keon-Hyung;Kim, Yong-Gyun
    • Korean journal of applied entomology
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    • v.47 no.4
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    • pp.435-445
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    • 2008
  • Due to internal feeding behavior, the oriental tobacco budworm, Helicoverpa assulta ($Guen\acute{e}e$), infesting hot pepper has been regarded to be effectively controlled by targeting egg and neonate larval stages just before entering the fruits. This study aimed to develop an efficient biological control method focusing on these susceptible stages of H. assulta. An egg parasitoid wasp, Trichogramma evanescens Westwood, was confirmed to parasitize the eggs of H. assulta. A mixture of Gram-positive soil bacterium, Bacillus thuringiensis subsp. kurstaki, and Gram-negative entomopathogenic bacterium, Xenorhabdus nematophila ANU101, could effectively kill neonate larvae of H. assulta. A sex pheromone trap monitored the occurrence of field H. assulta adults. The microbial insecticide mixture was proved to give no detrimental effects on immature development and adult survival of the wasp by both feeding and contact toxicity tests. A combined treatment of egg parasitoid and microbial pesticide was applied to hot pepper fields infested by H. assulta. The mixture treatment of both biological control agents significantly decreased the fruit damage, which was comparable to the chemical insecticide treatment, though either single biological control agent did not show any significant control efficacy. This study also provides morphological and genetic characters of T. evanescens.

Lipid and Carbohydrate Contents in the Adult Hemolymph during Flight of the Oriental Tobacco Budworm (Helicoverpa assulta (Guenee)) (비행중인 담배나방의 혈림프내 지질과 탄수화물의 함량변화)

  • 정진교;부경생
    • Korean journal of applied entomology
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    • v.31 no.4
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    • pp.329-337
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    • 1992
  • Studies were carried out to investigate changes of lipid and carbohydrate contents in the hemolymph of the Oriental tobacco budworm(Helicoverpa assulta (Guenee» adults during flight and hormonal effects on mobilization of energy sources in the hemolymph. During a few minutes after flight, both sexes showed a rapid increase in lipid content and the high level was maintained for about 2 hours. But carbohydrate content in the hemolymph during flight showed almost no change but a slight increase seen during the first 10 min of flight in males only. Synthetic adipokinetic(Lom-AKH- n), hypertrehalosemic(Bld-HrTH) hormones and brain/ corpora cardiaca extract of H. assulta adult elevated lipid and carbohydrate contents in hemolymph and the effect was much more pronounced for lipid. These results suggested that lipid is a main fuel for flight activity and lipid mobilization is under the hormonal control. And this study showed that both adipokinetic and hypertrehalosemic factors may exist in H. assulta and these factors may have similar structures to those of Mas-AKH, Hez-HrTH, Lom-AKH- n or Pea-HrTH.

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