• Korean journal of applied entomology
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• v.56 no.3
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• pp.289-294
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• 2017

The Oriental fruit fly, Bactrocera dorsalis, has been designated as a main quarantine insect pest. Sensitive monitoring and diagnosis against B. dorsalis are required for early quarantine treatment. This study formulated a wax type dispenser containing methyl eugenol and biopesticide to attract and kill this insect. It also developed diagnostic PCR primers against five major quarantine fruit flies of B. dorsalis, B. cucurbitae, B. tryoni, B. latifrons, and Ceratitis capitata. The lure and diagnostic primers were evaluated in a field located in Kota Kinabalu, Malaysia.

• YAKHAK HOEJI
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• v.41 no.2
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• pp.268-272
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• 1997

We studied the action of methyleugenol on immediate hypersensitivity. Methyleugenol completely inhibited systemic anaphylaxis induced by compound 48/80 in mice. Methyleugenol al so inhibited local anaphylaxis induced by anti-dinitrophenyl (DNP) IgE. Moreover, methyleugenol dose-dependently inhibited histamine release in peritoneal mast cells activated by compound 48/80 or anti-DNP IgE. These results suggest that the inhibitory effect of methyleugenol on anaphylaxis induced by compound 48/80 or anti-DNP IgE is due to, in part at least, the membrane stabilization of mast cells.

• Korean journal of applied entomology
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• v.58 no.2
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• pp.133-142
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• 2019

This study analyzed genetic variation of the Oriental fruit fly (OFF), Bactrocera dorsalis, which is designated to be a quarantine insect pest in Korea. OFF samples endemic to Taiwan were collected at three different locations (Taipei, Taichung, and Kaohsiung) for three days from July 30 to August 1 in 2018 and assessed in their age and mitochondrial DNA sequence variations. In these places, 1,085 OFF males were collected using methyl eugenol lure while 30 males of Zeugodacus cucurbitae and one male of Bactrocera tau were collected using Cuelure. A protein diet lure attracted 6 flies including one OFF and 5 flies of Z. cucurbitae. Male heads of OFF contained pterin, which increased in contents with age from 32 to $59{\mu}g/head$. There was a local variation in pterin amounts in OFF heads, in which Kaohsiung population had lower amounts of pterin than Taipei and Taichung populations. Genetic distance among these three populations were measured by random amplified polymorphic DNA and showed that Taipei population was separated from Taichung/Kaohsiung cluster. Genetic variation was also analyzed in sequence variations in cytochrome oxidase I (CO-I) and NADH dehydrogenase I (ND-I). There was 7.8% variation in CO-I sequence (360 residues) and 6.6% variation in ND-I sequence (213 residues). These polymorphic sites are proposed to be used to develop SNP (single nucleotide polymorphism) markers characteristic to Taiwan OFF populations.