• Title, Summary, Keyword: Minute pirate bug

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Toxicity of Pesticides to Minute Pirate Bug, Orius strigicollis Poppius (Hemiptera: Anthocoridae), a Predator of Thrips (총채벌레의 천적인 으뜸애꽃노린재에 대한 농약 독성)

  • Ahn Ki-Su;Lee Ki-Yeol;Kang Hyu-Jung;Park Sung-Kyu;Kim Gil-Hah
    • Korean journal of applied entomology
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    • v.43 no.3
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    • pp.257-262
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    • 2004
  • Toxicities of 51 pesticides (25 insecticides, 11, acaricides, 11 fungicides and 4 adjuvants) commonly used to control greenhouse insect, mite, and disease pests were evaluated to minute pirate bug, Orius strigicollis nymphs and adults at the recommended concentration. Among 25 insecticides tested, fipronil, lufenuron, acetamiprid+fipronil, $\alpha$-cypermethrin+flufenoxuron and buprofezin + amitraz showed low toxicity to O. strigicollis. Among acaricides, acequinocyl, bifenazate, chlorfenapyr, etoxazole, fenpyroximate, flufenoxuron, milbemectin, spirodiclofen and tebufenpyrad showed low toxicity to O. strigicollis. All fungicides and adjuvants tested were very low toxicity. It may be suggested from these results that five insecticides, nine acaricides, eleven fungicides and four adjuvants could be incorporated into the integrated thrips management system with O. strigicollis in greenhouses.

Evaluation of Low Toxic and Residual Toxicity of Pesticides Registrated on Sweet Pepper Greenhouse to Orius strigicollis (으뜸애꽃노린재 성충에 대한 착색단고추에 등록된 농약의 저독성 및 잔류독성 평가)

  • Choi, Byeong-Ryeol;Park, Hyung-Man;Kim, Jeong-Hwan;Lee, Si-Woo
    • Korean journal of applied entomology
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    • v.46 no.3
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    • pp.415-423
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    • 2007
  • For the development of integrated pest management system by harmonizing biological and chemical control, some experiments were carried out to select low toxic pesticides and to evaluate residual toxicity to natural enemies. Leaf dipping method and body dipping method were set up for evaluating toxicity to minute pirate bug, Orius strigicollis adult. We had tested 52 kinds of pesticides (33 insecticides, 19 fungicides) commonly used to control greenhouse insects, mites, and disease pests to natural enemies at the recommended concentration. Fourteen insecticides by body dipping method, 12 insecticides by leaf dipping method and 19 fungicides were selected as low toxic pesticides to O. strigicollis adult. After insecticide spraying at recommending dose on the sweet pepper plant, we examined residual effect of insecticides by introducing natural enemies on different days. Safety interval for introduction of O. strigicollis adult was established according to residual toxicity of pesticides. Safety insecticides at one day after treatment were pyraclofos, methomyl, thiodicarb, esfenvalerate bifenthrin, alpha-cypermethrin, etofenprox, fenvalerate, imidacloprid, acetamiprid, abamectin, emamectin benzoate, spinosad, indoxacarb. However, residual toxicity of nee-nicotinoids last up to 21 days to O. strigicollis adults.

Determination of Optimum Conditions for Mass Rearing of Minute Pirate Bug, Orius strigicollis (Orius strigicollis의 증식 최적화 조건 탐색)

  • 송정흡;강상훈;강애숙;이광석;한원탁
    • Korean journal of applied entomology
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    • v.40 no.2
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    • pp.111-115
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    • 2001
  • Orius strigicollis Poppies is an indigenous natural enemy of thrips pests in Korea To develop an efficient mass rearing system for Ο. strigicollis, effects of hatchability, egg numbers and egg harvesting time of Ο. strigicollis were measured in cylindrical cage (251 ㎤) under the conditions of photoperiod 16L : 8D, $55\pm$10% RH and $25\pm$$2^{\circ}C$. The hatchability and developmental period of eggs were 88.5% and 5.7 days, respectively. The highest emergence rate (50.8%) was achieved when the number of eggs laid was ranged from 50 to 100 per arena. The proper harvesting time of newly produced adults was 17 days postoviposition. Relationship between the number of resulting adults per female and the number of female adults per arena was Y : -10.7971n (X) +44.659 ($R^2$=0.7619). The generation time (T), the net reproductive rate ($R_{0}$ ) and the intrinsic rate of natural increase ($r_{m}$ ) were 26.5 days, 6.18 and 0.0687, respectively.

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Effects of Minute Pirate Bug, Orius strigicollis (Hemiptera: Anthocoridae) on Control of Thrips on Hot Pepper in Greenhouse (하우스고추에서 Orius strigicollis Poppius를 이용한 총채벌레류 방제효과)

  • 송정흡;강상훈;이광석;한원탁
    • Korean journal of applied entomology
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    • v.40 no.3
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    • pp.253-258
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    • 2001
  • Biological control of thrips with Orius strigicollis Poppius was evaluated in a hot pepper greenhouse. To study the biological control strategy of thrips on hot pepper grown in greenhouse, three plots were established: natural enemy removed plot(CNT), pesticide treated plot(PAT) and O. strigicollis released plot with no pesticide application (NRT). The nymphs of O. strigicollis were found on the leaves of lower stratum in CNT and NRT at 13 days after the first release. The density of thrips was suddenly dropped and maintained at low level since 15 day after transplanting in NRT. The densities of thrips on hot pepper flowers was also maintained at much less level in NRT than in CNT. The thrips and O. strigicollis, which were aggregated in flowers, may have resulted in improved predator searching. Average damage indices of CNT, PAT and NRT were 0.31, 0.05 and 0.08 and the percentage of damaged fruit were 80.0, 17.1 and 24.8% respectively. The damage index and percentage of damaged fruit of NRT was slightly higher than PAT, but very lower than CNT. The introduction of the adults of O. strigicollis, which was the biological control agent for the control of thrips, was effective on hot pepper.

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Effect of Temperature on the Development and Oviposition of Minute Pirate Bug, Orius strigicollis (Hemiptera:Anthocoridae) (Orius strigicollis Poppius (Hemiptera:Anthocoridae)의 발육과 산란에 미치는 온도의 영향)

  • 김정환;김용헌;한만위;이관석;이정운
    • Korean journal of applied entomology
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    • v.38 no.1
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    • pp.29-33
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    • 1999
  • Orius strgicollis Poppius is an endemic natural enemy of thrips recently found. To estimatethe optimum temperature for rearing in laboratory, development and oviposition of 0. strigicollis wasstudied at 15, 20, 25 and 30$^{\circ}$C with a 16L : 8D photoperiod and 60-80% RH. Cotton aphid, Aphisgossipyii, was supplied as prey. Total number of eggs laid per female ranged from 39.1 to 68.5 with thehighest at 25$^{\circ}$C. Adult longevity decreased as temperature increased, and the reverse was true for eggsurvivorship. Survivorship of larvae was 26.7,43.3, 76.7 and 46.7% at 15, 20, 25 and 30$^{\circ}$C, respectively.Duration of eggs and larvae at tested temperatures ranged from 3.4 days to 18.9 days and from 9.4 days to45.6 days, respectively. A linear regression model could describe development of the predator as afunction of temperature (R2=0.949-0.997). The lower developmental threshold temperatures for egg,larvae, and total immature stage were estimated to be 12.4, 11.4, and 11.6"C, respectively.6"C, respectively.vely.

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