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Effect of the postfeeding interval on olfactory responses of thrips to herbivore-induced cotton plants

Insect Science 2016年第6期23卷 881-892页

作者： Rehan Silva Gimme H. Walter Lewis J. Wilson Michael J. Furlong School of Biological Sciences University of Queensland St. Lucia Queensland 4072 Cotton Research Unit CSIRO Agriculture Flagship Narrabri NSW 2390 Austrafia

We investigated the responses of 3 thrips species, Frankliniella schultzei Tryborn, E occidentalis Pergrande, and Thrips tabaci Lindeman （Thysanoptera： Thripidae） to herbivore-damaged and undamaged cotton seedlings （Gossypium hirsutum L. [Malvales： Malvaceae]） at a range of time intervals following damage by adult Tetranychus urticae （Koch）, adult T. ludeni （Zacher）（Acari： Tetranychidae） or Helicoverpa armigera （Hubner）（Lepidoptera： Noctuidae） larvae in olfactometer assays. The intensity/frequency of the response of thrips to herbivore-induced plants decreased with time and ultimately disappeared in all cases; however, the rate at which the response declined was related to the herbivore species that inflicted the damage. All 3 species of thrips were attracted to plants damaged by T. urticae for longer than they were to plants damaged by T. ludeni. The duration for which damaged plants remained attractive was also affected by the degree of damage inflicted on cotton seedlings. For example, E schultzei was attracted to plants damaged by a higher density of two-spotted spider mites （100/plant） for much longer than to plants damaged by a lower density of these mites （50/plant）. The results reinforce previous studies that demonstrate that arrangement of variables influences the responses of thrips to their herbivore-induced cotton host plants. Results also show that these responses are variable in time following herbivore damage to cotton plants, which further demonstrates how difficult it is to generalize about the functional significance of these interactions.

关键词： attraction cotton duration induced responses olfactometer Thysanoptera

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Age at reproductive maturity and effect of age and time of day on sex attraction in the potato psyllid Bactericera cockerelli

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Insect Science 2012年第5期19卷 585-594页

作者： Christelle Guedot David R. Horton Peter J. Landolt U.S. Department of Agriculture Agricultural Research Service 5230 Konnowac Pass Road Wapato WA 98951 USA

The potato psyllid, Baetericera （= Paratrioza） cockerelli （gulc）（Hemiptera： Triozidae）, is a major pest of potato. Studies were conducted to determine the age at which both males and females reach reproductive maturity and the effect of age and time of day on sex attraction. Adult B. cockerelli reach reproductive maturity within 48 h post-eclosion, with females being mature on the day of eclosion and males at 1 day post-eclosion. Oviposition generally began 2 days after mating but was delayed when females mated within 2 days post-eclosion. In laboratory olfactometer assays, the age of females used as odor sources and the age of males assayed to these odors did not affect sex attraction, with both younger （1-4-day-old） and older （8-10-day-old） males being attracted to females, regardless of female age （1-4-day-old or 8-10-day-old）. Males assayed to live females at different times during the photophase （between 8：00 and 20：00 hours） were attracted to females between 11：00 and 17：00 hours, showing a temporal periodicity in sex attraction with B. cockerelli at least during the photophase.

关键词： mate attraction olfactometer oviposition periodicity potato preference,Triozidae

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Involvement of chemosensory proteins in host plant searching in the bird cherry-oat aphid

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Insect Science 2021年第5期28卷 1338-1353页

作者： Xiong Peng Lang Liu Yi-Xiao Huang Su-Ji Wang De-Xian Li Shu-Ting Chen Jean-Christophe Simon Ming-Jing Qu Mao-Hua Chen State Key Laboratory of Crop Stress Biology for Arid Areas Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural AffairsNorthwest A&F UniversityYang lingShaanxi Province712100China IGEPP UMR 1349 INRAAgrocampus OuestUniv Rennes 1F-35653 Domaine De La MotteLe RheuFrance Shandong Academy of Agricultural Sciences Shandong Peanut Research InstituteQingdaoShandong266100China

Chemosensory systems are considered to play an important role in host plant selection in herbivorous ***,few studies have focused on chemosensory proteins(CSPs)for aphid host-location *** roles of CSPs in searching for different Poaceae species(wheat,barley,triticale,maize and sorghum)were tested in Rhopalosiphum padi,an important cereal *** olfactometer assays showed that *** responds to plant *** *** CSP genes were *** of aphid morph,tissue and starvation state on expression patterns of CSPs was *** levels of CSPI,CSP4,CSP5 and CSP6 in winged aphids were significantly higher than those in wingless *** levels of four genes(CSPI,CSP4,CSP5 and CSP6)were relatively higher in the head with antennae,and the four genes tended to be upregulated follow ing *** of three CSPs(CSP4,CSP5 and CSP6)altered aphid host-location behavior in response to the five different host plants *** volatile compounds of host plants(octanal,[E]-2-hexenol and linalool)have signif-icant attraction to winged *** according to the four-arm olfactometer *** docking predicted hydrogen bonding sites which played key roles in the binding of CSP4,CSP5 and CSP6 with volatile *** of CSP4 or CSP5 significantly decreased the staying time of *** in the arms with ***,knockdown of CSP6 could not affect the response of *** to *** results bring evidence for the involvement of three CSPs in *** host-location behavior.

关键词： host choice experiment olfactometer Rhopalosiphum padi RNAi starvation wing form

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Attraction of bruchid beetles Callosobruchus chinensis (L.) (Coleoptera: Bruchidae) to host plant volatiles

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Journal of Integrative Agriculture 2020年第12期19卷 3035-3044页

作者： WANG Hong-min BAI Peng-hua ZHANG Jing ZHANG Xue-min HUI Qin ZHENG Hai-xia ZHANG Xian-hong College of Agricultural Economics and Management Shanxi Agricultural UniversityTaigu 030801P.R.China College of Plant Protection Shanxi Agricultural UniversityTaigu 030801P.R.China Institute of Plant Protection Tianjin Academy of Agricultural SciencesTianjin 300384P.R.China

Host-plant volatiles play an important role as cues for herbivores in search of resources, mates and oviposition sites in complex environments. Plant volatile-based attractants can be developed for pest monitoring and control. Previously, we indicated that mated female adults of Callosobruchus chinensis showed choice preference behavior toward 2-hexenal and benzaldehyde. Our objective here was to investigate the synergistic effect of host-derived attractive volatiles in attracting C. chinensis under laboratory and field conditions in Shanxi Province, China. We hypothesized that the ratio and concentration of volatiles derived from Vigna radiata play critical roles for C. chinensis in locating this host. Therefore, we collected and identified the volatiles of mungbean by using headspace collection and GC-MS. The effectiveness of different ratios and concentrations of two compounds (2-hexenal and benzaldehyde) that elicit C. chinensis searching behavior were examined in Y-tube olfactometer assays. The combination of 300 μg μL^–1 2-hexenal and 180 μg μL^–1 benzaldehyde loadings exhibited a synergistic effect on attracting C. chinensis (82.35%). Compared to control traps, the adults were significantly attracted to traps baited with blends, and more attraction to females than males was found for blend traps in the field experiments. Our results suggest that blends of this specific concentration and ratio of benzaldehyde and 2-hexenal can be used in traps as attractants for C. chinensis monitoring and control in the field.

关键词： Callosobruchus chinensis plant volatiles synergistic effect olfactometer attractant

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