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N.S. Aratchige L.C.P. FernandoP.H.P.R. de Silva K.F.G. PereraC.S. Hettiarachchi K.P. WaidyarathneS.M.V. Jayawardena 《Crop Protection》2010
Neoseiulus baraki Athias-Henriot (Acari: Phytoseiidae) is an important predatory mite of the coconut mite, Aceria guerreronis Keifer (Acari: Eriophyidae) and attempts are now being made to evaluate the effectiveness of augmenting N. baraki to control coconut mite in the field. These studies require a steady supply of N. baraki in large numbers. One major constraint of the existing method to mass rear N. baraki on Tyrophagus putrescentiae Shrank (Acari: Acaridae) in a closed arena without a water barrier was frequent contamination of cultures by other mites. This paper describes the development of an efficient method to mass rear N. baraki in the laboratory with less monitoring and relatively minimal contaminants. Three box-type arenas and a tray-type arena were tested to mass rear T. putrescentiae. Mites were successfully developed on two box-type arenas and the tray-type arena, but the production (2197 mites per tray in 4 weeks) of T. putrescentiae was significantly higher on the tray-type arena. A 110-fold increase of T. putrescentiae was achieved in tray-type arenas in 4 weeks. None of the box-type arenas could be maintained more than 5 weeks without acarine and fungal contaminations. N. baraki could be successfully reared on the tray-type arena at least for 6 weeks. More than 4800 mites per tray, a 240-fold increase was achieved in 5 weeks when T. putrescentiae was added at 3-week intervals. Advantages and disadvantages of the new method are described. 相似文献
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Muhammad Sarwar 《国际虫害防治杂志》2016,62(2):140-148
The food diversification strategy that can offer suitable nutrients as a diet for the natural enemies may possibly help to decrease pest populations by boosting the efficiency of predators. Therefore, my objective was to evaluate the effects of plant and animal diets on biological parameters of the phytoseiid mite Neoseiulus cucumeris (Oudemans). This predator that is a natural enemy of mites was reared on plant pollens (maize (Zea mays L.), sweet pepper (Capsicum annuum L.), mungbean (Vigna radiata L.), cucumber (Cucumis sativus L.), tomato (Lycopersicon esculentum Mill.), and rose (Rosa multiflora Thunb.), offered alone, and in combination with the prey mite Tyrophagus putrescentiae (Schrank). Results showed that N. cucumeris fed, developed and reproduced better when it was provided with plant and animal diets together, compared to pollens offered alone. The predator showed the most efficient capability for completion of life parameters (development, survival, fecundity, oviposition, longevity and instantaneous rate of increase) with maize and mungbean ingested pollens in combination with T. putrescentiae. The least competency was observed on cucumber and rose pollens used separately. The lowest developmental time of the predator from neonate larva to adult emergence, the highest immature survivorship, higher fecundity, long oviposition period, and the highest adult female's life span were observed when offered maize pollens along with T. putrescentiae compared to other treatments. Accordingly, the instantaneous rate of population increase (ri) day?1 was surpassed by N. cucumeris for the combination of pollen and T. putrescentiae diets than pollens utilized alone. It is determined that N. cucumeris can reproduce and develop more successfully on a food complex consisting of pollen and animal diets than any single diet. These findings reveal that pollen can be used by N. cucumeris as a suitable alternative food in periods when prey in the field is sparse or absent. Moreover, such propensity of predators to feed on food from plant origin increases their survival during periods when prey is locally scarce, but natural enemies might occur at the expense of an ability to utilize food as efficiently as specialized predators to boost the management strategies of pest species in field's ecosystem. 相似文献
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等钳蠊螨Blattisocius dentriticus(Berlese)是腐食酪螨Tyrophagus putrescentiae(Schrank)的重要捕食螨,本文作者研究了等钳蠊螨雌成螨在6个温度下对腐食酪螨卵的捕食作用。结果表明,在不同温度下等钳蠊螨雌成螨对腐食酪螨卵的功能反应均属HollingⅡ型。在17~29℃范围内,等钳蠊螨雌成螨对腐食酪螨卵的瞬间攻击率随温度升高而升高,而处理时间随温度升高而缩短;温度超过29℃时,等钳蠊螨雌成螨对腐食酪螨卵的瞬间攻击率有所下降,处理时间也相应延长。研究结果表明温度对等钳蠊螨对腐食酪螨的捕食效率有着明显的影响。 相似文献
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The acaricidal activities of paeonol (2'-hydroxy-4'-methoxyacetophenone) and benzoic acid identified in the root bark of tree peony, Paeonia suffruticosa Andrews, against copra mite, Tyrophagus putrescentiae (Schrank), adults were examined using direct contact and vapour phase toxicity bioassays and compared with those of cinnamyl acetate, cinnamyl alcohol and 37 monoterpenoids as well as the acaricides benzyl benzoate, dibutyl phthalate and N,N-diethyl-m-toluamide (DEET). Based on LD(50) values in fabric piece contact toxicity bioassays, the acaricidal activities of benzoic acid (4.80 microg cm(-2)) and paeonol (5.29 microg cm(-2)) were comparable to that of benzyl benzoate (4.46 microg cm(-2)) but more pronounced than those of DEET (30.03 microg cm(-2)) and dibutyl phthalate (25.23 microg cm(-2)). In vapour phase toxicity bioassays, paeonol and benzoic acid were much more effective in closed containers than in open ones, indicating that the effects of these compounds were largely due to action in the vapour phase. As judged by 24 h LD(50) values, (1S)-(-)-verbenone (7.42 mg per disc) was the most toxic fumigant, followed by (1S)-(-)-camphor, (S)-(+)-carvone, (R)-(-)-linalool and (+/-)-camphor (10.45-18.18 mg). Potent fumigant toxicity was also observed with paeonol, (2S,5R)-(-)-menthone, (+/-)-citronellal, benzoic acid, (1S,4R)-(-)-alpha-thujone and (R)-(+)-pulegone (25.10-34.63 mg). Neither benzyl benzoate, DEET nor dibutyl phthalate caused fumigant toxicity. Paeonia root bark-derived materials, particularly paeonol and benzoic acid, as well as the monoterpenoids described, merit further study as potential acaricides or as leads for the control of T. putrescentiae. 相似文献
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本文研究了添加氨基酸对腐食酪螨的种群增长和巴氏新小绥螨捕食功能的影响.室内饲养条件下(25℃、RH 80％、光周期16L∶8D),9种氨基酸分别以1％的含量添加到麦麸饲料中.结果表明缬氨酸、亮氨酸、甲硫氨酸、苏氨酸的添加均能提高腐食酪螨的繁殖能力,其中缬氨酸作用最为显著,50 g混合饲料中接入2000头腐食酪螨,种群最大数量可达15072.33±710.75头.氨基酸添加饲养后,从捕食能力上来说,添加组氨酸能够显著促进巴氏新小绥螨捕食腐食酪螨,相比对照组,捕食能力提高了76.96％. 相似文献
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BACKGROUND: Recent studies have focused on materials derived from plant extracts as mite control products against house dust and stored food mites because repeated use of synthetic acaricides had led to resistance and unwanted activities on non‐target organisms. The aim of this study was to evaluate the acaricidal activity of materials derived from Lycopus lucidus against Dermatophagoides farinae, D. pteronyssinus and Tyrophagus putrescentiae. RESULTS: The LD50 values of L. lucidus oil were 2.19, 2.25 and 8.45 µg cm?2 against D. farinae, D. pteronyssinus and T. putrescentiae. The acaricidal constituent of L. lucidus was isolated by chromatographic techniques and identified as 1‐octen‐3‐ol. In a fumigant method against D. farinae, the acaricidal activity of 1‐octen‐3‐ol (0.25 µg cm?2) was more toxic than N,N‐diethyl‐m‐toluamide (DEET) (36.84 µg cm?2), followed by 3,7‐dimethyl‐1‐octen‐3‐ol (0.29 µg cm?2), 1‐octen‐3‐yl butyrate (2.32 µg cm?2), 1‐octen‐3‐yl acetate (2.42 µg cm?2), 3,7‐dimethyl‐1‐octene (9.34 µg cm?2) and benzyl benzoate (10.02 µg cm?2). In a filter paper bioassay against D. farinae, 1‐octen‐3‐ol (0.63 µg cm?2) was more effective than DEET (20.64 µg cm?2), followed by 3,7‐dimethyl‐1‐octen‐3‐ol (1.09 µg cm?2). CONCLUSION: 1‐Octen‐3‐ol and 3,7‐dimethyl‐1‐octen‐3‐ol could be useful as natural agents for the management of three mite species. Copyright © 2011 Society of Chemical Industry 相似文献
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凤尾菇螨类综合防治初步研究 总被引：1，自引：0，他引：1
从凤尾菇培养料上采集到螨类属4科4种，为害凤尾菇螨类为腐食酪螨（Yrophogus putrescentiae)，综合防治采用二次发酵和化学防治相结合，二次发酵；培养料温度60℃保持6－8h，温度50－55℃保持5－7d，化学防治采用克螨特，有效浓度1：500倍。 相似文献
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