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Exploiting push-pull strategy to combat the tea green leafhopper based on volatiles of Lavandula angustifolia and Flemingia macrophylla

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Journal of Integrative Agriculture 2020年第1期19卷 193-203页

作者： HAN Shan-jie WANG Meng-xin WANG Yan-su WANG Yun-gang CUI Lin HAN Bao-yu Zhejiang Provincial Key Laboratory of Biometrology and Inspection&Quarantine College of Life SciencesChina Jiliang UniversityHangzhou 310018P.R.China Tea Research Institute Yunnan Academy of Agricultural SciencesMenghai 666201P.R.China

Thirteen volatile compounds were identified from Flemingia macrophylla plants. Eight major components significantly attracted the tea green leafhoppers, Empoasca flavescens F. Based on their relative abundances, following synthetic blends were made for field experiments: 1) eight-component-attractant blend included Z-3-hexen-1-ol, Z-3-hexenyl acetate, Z-ocimene, Me SA, Z-3-hexenyl butyrate, dodecane, hexadecane and nonanal at 10, 10, 1, 11, 2, 6, 2 and 4 mg mL^-1 in n-hexane, respectively;2) four-component-attractant blend #1 contained hexadecane, Z-3-hexenyl acetate, Z-3-hexen-1-ol and nonanal at 2, 10, 10 and 4 mg mL^-1 in n-hexane, respectively;3) four-component-attractant blend #2 contained hexadecane, Z-3-hexenyl acetate, Z-3-hexen-1-ol and Me SA at 2, 10, 10 and 11 mg mL^-1 in n-hexane, respectively. Thymol and 1-methoxy-4-methyl-2-(1-methylethyl)-benzene, identified from Lavandula angustifolia aeration samples, significantly repelled the leafhopper as strong repellents when tested alone or in combination at 10 mg mL^-1. For field bioassays, each attractant lure was attached to a bud green sticky board hung from a bamboo stick at above tea plant level for catching the leafhoppers, whereas the repellent dispenser was tied to a tea branch inside tea clump for pushing the leafhoppers away from tea clumps. The results showed that the eight-component-attractant blend caught similar numbers of the leafhopper as did the four-component-attractant blend #1 at about 53–79 leafhoppers/trap/day, which were significantly higher than those on the hexane-control bud green sticky boards. Average leafhopper catches from un-baited sticky boards were about 51–73 leafhoppers/trap/day when pushed by the repellents placed inside tea plants, with the two-component-repellent blend being more effective than their single components. When the two-component-repellent blend was further tested with the three attractant blends in a push-pull fashion, average trap catches ranged from 62 to 9

关键词： push-pull strategy attractants repellents Flemingia macrophylla tea green leafhopper tea plantation

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Like or dislike:Response of rodents to the odor of plant secondary metabolites

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Integrative Zoology 2017年第5期12卷 428-436页

作者： Sabine C.HANSEN Caroline STOLTER Christian IMHOLT Jens JACOB Julius-Kühn Institute for Plant Protection in Horticulture and Forests Vertebrate ResearchMünsterGermany University Hamburg Biocenter Grindel and Zoological MuseumHamburgGermany

Rodents,including common voles(Microtus arvalis)and house mice(Mus musculus)cause immense pre-harvest and post-harvest ***,developing methods that mitigate these losses while maintaining their role in ecosystems is a *** plant secondary metabolites(PSM)which significantly reduce food intake of both species under laboratory conditions have been ***,before these can be used in rodent pest management,they must be tested under more natural conditions where other food sources are *** this study,the odors of 4 PSMs were evaluated for their repellent effects in experiments conducted in semi-natural *** treated with PSMs or untreated soil(experimental control)was placed in an underground box containing food(rolled oats).We quantified the number of visits to each box and could demonstrate that all 4 PSMs reduced the number of visits to treatment boxes in both rodent *** common voles the combination of methyl nonyl ketone+black pepper oil was the most repellent *** mice made fewer visits to all PSM boxes;boxes with the anthraquinone were visited ***,house mice consumed less food from boxes containing soil treated with all 4 *** results suggest that PSMs are repellent in murid and microtine rodents under semi-field *** addition,the future use of PSM odors for repelling both pest species,especially house mice,seems *** investigations with other PSMs,different concentrations as well as alternative application methods are needed to repel common voles from attractive crops.

关键词： enclosure trials odor plant secondary metabolites repellents rodents

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Behavioural Response of Anacanthotermes ochraceus towards Some Baits and Volatile Oils

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Journal of Agricultural Science and Technology(B) 2012年第12期2卷 1279-1286页

作者： Sawsan Sabry Moawad Amal A1-Barty Noura J. Al-Otaibi National Research Center Dokki Cairo 12311 Egypt Faculty of science Taif University Taif City 19864 Saudi Arabi

Six types of termites＇ baits （cartoon, rough tissues, soft toilet tissues, acacia wood, saw dust of building wood and sackcloth） were elicited variable degree of attraction toward Anacanthotermes ochaceus, where the best one was cardboard, followed by soft and rough toilet tissue at mono-choice and multiple-choice tests. Chemical analysis showed that there were variations in the chemical constituents （lignin, cellulose, N, H and C） of the six baits studied. On the other hand, olfactory reactions of harvester termites toward eight volatile oils （four natural medical plants and four commercial terpines） were repellent, but the most repellent one was cineol and the least one was clove oil. The most tested oils were caused inhibition in feeding, except cedar wood. The most toxic oils were cineol followed by thymol.

关键词： Anacanthotermis ochaceus baits natural oil commercial oil attractants repellents mortality.

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