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RISS 인기검색어
- 검색키워드
- 저자 : Vargas Roger I. (검색결과 2 건)
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A potential field suppression system for Bactrocera dorsalis Hendel
Chiou Ling Chang,Il Kyu Cho,Qing X. Li,Nicholas C. Manoukis,Roger I. Vargas 한국응용곤충학회 2013 Journal of Asia-Pacific Entomology Vol.16 No.4
Development of an effective and safe detection or control system is important for pestmanagement. Attractants for male fruit flies, e.g., methyl eugenol (ME), are currently being used in fruit fly control in combination with insecticides. A single formulation that possesses both attraction and killing properties would improve control methods and cost effectiveness. We previously observed the attraction of oriental fruit flies to a basil plant in a yard and confirmed the attraction ofmale fruit flies to basil oil (BO) in the laboratory. Subsequently,we identified insecticidal compounds fromBO that killed three species of tephritid fruit flies in the laboratory, and we also discovered physiological interactions between BO constituents and male attractants. Based on these observations,we developed a single package of basil oil and methyl eugenol (BO + ME) formulation that possesses “attract and kill” properties in combination with a modified AWPM standard trap for field application. The effectiveness of this system is dependent on the type of trap and weather conditions (sunny or not sunny). Any attracted flies were killed within 2 h after entering the BO + ME trap. The combination of BO,ME, and a clear bucket trapmay be a novel alternative for a cost effective and environmentally friendly fruit fly management system.
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Piñero Jaime C.,Souder Steven K.,Cha Dong H.,Collignon R. Max,Vargas Roger I. 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.3
In many insect species including fruit flies (Diptera: Tephritidae), the behavioral responses to volatiles emitted by their host plants can be modulated by environmental conditions and by the physiological state of the insect. Here, we quantified (1) the effects of female age on the attraction of female melon fly, Zeugodacus cucurbitae (Diptera: Tephritidae) to volatiles emitted by intact and mechanically damaged tomato (Solanum lycopersicum), eggplant (S. melongena), zucchini (Cucurbita pepo), bitter melon (Momordica charantia), and cucumber (Cucumis sativus) fruit, and (2) the influence of time elapsed since fruit damage on the outcome. The investigations were conducted under semi-natural conditions in Hawai’i. Results from the first experiment revealed that, for freshly damaged tomato, eggplant, and zucchini, the level of female response was comparatively low and was not affected by female age. For bitter melon and cucumber, higher levels of response to freshly damaged fruit were documented, and the response levels gradually increased as female age increased from 1 to 4 weeks, reaching 70% for 4-week-old females exposed to cucumber odor. Results from our second experiment indicated that, on average, 56% of the females released responded in 20 min when cucumbers were freshly sliced, and the level of response was reduced 6-fold within a couple of hours. Females did not respond to tomato and cucumber odor when fruits were damaged >8 h before testing. Fruit volatiles involved in female Z. cucurbitae attraction seem to be released shortly upon mechanical damage and they are short-lived. The plasticity of the olfaction-driven behavior observed in Z. cucurbitae depending on female age and on the strength of the olfactory cues associ ated with preferred and less preferred hosts, adds another dimension to our understanding of the host-seeking behavior of this invasive species.
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