• Title/Summary/Keyword: Bracon hebetor

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Suppression of Indian Meal Moth (Lepidoptera : Pyralidae) by Iterative Mass Release of Bracon hebetor (Hymenoptera : Braconidae) in Wheat Elevators (대형 엘리베이터에서 Bracon hebetor (벌목: 좀벌과)의 반복 방사에 의한 화랑곡나방 (나비목 : 명나방과)의 방제 효과)

  • Na, Ja-Hyun;Chun, Yong-Shik;Ryoo, Mun-Il
    • Korean journal of applied entomology
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    • v.44 no.3 s.140
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    • pp.237-241
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    • 2005
  • Biological control of Indian meat moth (Plodia interpunctella ($H\"{u}bner$)) by iterative mass release of its larval parasitoid, Bracon hebetor Say, was tested in a large wheat elevator (diameter 8 m, height 41 m) containing 6,000 t of wheat. Adult parasitoids were released seven times from July 23 to September 3, 2002. The number of parasitoid adults per release time varied from 3,000 to 10,000 so that the total number released was 50,000. The moth population density in the parasitoid-released elevator was maintained at a level of ${\approx}30%$ compared to the moth population in untreated elevators.

Mulberry Silkworm, Bombyx mori L., as a Host for Neurotoxic Braconidae I. Insect-toxic Properties of Bracon Venom Gland Extract and Its Fractions

  • Madyarov, S.R.;Mirzaeva, G.S.;Otarbaev, D.O.;Khamidi, K.S.;Kamilova, S.I.;Akhmerov, R.N.;Khamraev, A.S.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.7 no.2
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    • pp.235-239
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    • 2003
  • The silkworm Bombyx mori L. was studied as the potential “host” of popular in Uzbekistan biocontrol ectoparasite, entomophagous Bracon hebetor Say. Being one of representatives of economic-beneficial insects, the silkworm (larvae, pupae and imago) can be used as highly sensitive test organism for revealing of neuro toxic effects of insects venom as well as of their purified components in screening assays. In comparative aspect, except a mulberry silkworm, representatives of Uzbekistan pests cotton-boll worm Helycoverpa armigera Hbn., lesser mulberry pyralid Glyphodes pyloalis Wlk., codling moth Corpocapsa pomonella L., malaria mosquito Anopheles claviger and Colorado potato beetle Leptinotarsa decemlineata Say have been subjected to insect toxic test of bracon venom gland extract (VGE) and its fractions which were obtained by gel-chromatography on Sephadex G-100. The paralyzing effect of the VGE and its fractions was shown in a various degree on the pests.

In Vitro Rearing of parasitoids of Insect Pests in China

  • Li, Li-Ying
    • Korean journal of applied entomology
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    • v.31 no.3
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    • pp.241-246
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    • 1992
  • Since 1975, the studies on in vitro rearing Trichogramma spp., Anastatus japonicus Ashmead, Telenomus dendrolimusi Chu, Dibrachys cavus Walker, Habrobracon hebetor(Say), Bracon greeni Ashmead have been conducted successfully in China. The simulated “host-eggs" are made of polyethylene or polypropylene semispherical capsules, containing artificial diets, in which insectan pupal hemolymph is the main component. Manufacture of simulated “host larvae" are made of small rectangular parafilm of cotton-paper bags, containing artificial diets with insectan pupal hemolymph as the main component. Mass production of in vitro reared Trichogramma spp. and Anastatus japonicus and its utilization in the fields showed good effectiveness in controlling cotton bollworm, pine caterpillars, sugarcane borers and litchi stink bug.

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Effect of Temperature on the Development of Bracon hebetor (Hymenoptera: Braconidae) Parasitizing Indianmeal Moth (Lepidoptera: Pyralidae) (화랑곡나방(나비목: 명나방과)에 기생한 보리나방살이고치벌 (벌목: 고치벌과)의 발육과 온도와의 관계)

  • 김나경;나자현;류문일
    • Korean journal of applied entomology
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    • v.39 no.4
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    • pp.275-279
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    • 2000
  • Development of Bracon hebetor Say parasitizing Indianmeal moth (Plodia interpunctella (Hubner) was studied at five temperature conditions (17, 20, 25, 28 and 32$\pm$0.5$^{\circ}C$) under a photoperiod of 16 : 8 (L : D). Developmental period (mean$\pm$s.e.) of B. hebetor from egg to eclosion decreased from 28.6$\pm$0.50 to 9.3 $\pm$0.09 days and 28.1 $\pm$0.51 to 9.2$\pm$0.09 days for female and male, respectively, as the temperature increased from 17 to $32^{\circ}C$. The combination model provided a good description of the relationship between temperature and development. The low temperature thresholds were estimated to be 14.0, 12.8, 15.1$^{\circ}C$ for development of egg, larva and pupa. The thresholds for normal development (outside of the boundary layer of the development) were 14.0, 17.5, $15.1^{\circ}C$ for egg, larva and pupa, respectively, indicating that the larval stage is more sensitive to the low temperature than the other stages. The results suggested that the present B. hebetor population could be another ecological race adapting to the seasonal temperature conditions of this area.

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Pupation Site Selection Behavior of Plodia interpunctella (Lepidoptera: Pyralidae) in Response to Its Parasitoid, Bracon hebetor (Hymenoptera: Braconidae) (보리나방살이고치벌에 대한 행동 반응으로서의 화랑곡나방 유충의 용화장소 선택)

  • Shin, Jae-Hyub;Nam, Young-Woo;Ryoo, Mun-Il
    • Korean journal of applied entomology
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    • v.51 no.3
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    • pp.215-222
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    • 2012
  • Pupation site selection behavior of Plodia interpunctella (H$\ddot{u}$bner) in response to its larval parasitoid, Bracon hebetor Say, was evaluated. Under the presence of the parasitoid, more moth larvae pupated in a layer deeper than 5 mm. Because the parasitoid searched for the host mostly in the surface layer (< 5 mm), larvae in deeper layers were able to successfully escape attack by the parasitoid. However, this behavior did not affect the numerical response of the parasitoid. The parasitoid laid more eggs per host larvae when the number of attacked larvae decreased.