• Korean journal of applied entomology
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• v.41 no.4
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• pp.285-292
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• 2002

These studies were carried out to investigate the fumigant toxicity, the contact toxicity and the ovipositional repellency of 25 monoterpenoids against oak longicorn beetle adults, Moechotypa diphysis. Monoterpenoids with 100% of fumigant toxicity were 1, 8-cinehone, fenchone, pulegone and (equation omitted)-terpinene at 20 (equation omitted)/954 ml (air) concentration, pulegone and (equation omitted)-terpinen at 10 (equation omitted)/954 ml (air) concentration, pulegone at 5 (equation omitted)/954 ml (air) concentration. Most monoterpenoids showed low or no contact toxicity but only pulegone showed about 70% mortality. Some monoterpenoids which had repellency to female adults with Y-tube olfactometer were bornylacetate, carvacrol, 1, 8-cineole and menthol at 1 (equation omitted) dose, while citronellol showed attractant response. Carveol, geraniol and perillyl alcohol of 25 monoterpenoids showed ovipoistional repellency of 82.1%, 78.3%, 87.5%, respectively, at the concentration of 1,000 ppm in the laboratory condition. In the field, the result tested with three monoterpenoids indicated that geraniol was the most effective one at the concentration of 10,000ppm and 1,000 ppm, but residual effect wasn't found.

• Korean journal of applied entomology
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• v.45 no.2 s.143
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• pp.189-194
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• 2006

Fumigant toxicity of 18 plant essential oils were tested against the adults of oak longicorn beetle, Moechotypa diphysis. Among them, eucalyptus, rosemary and pennyroyal oils showed 100% mortality and sage oil showed 85% mortality at 10 $\mu\ell/\ell$ (air) dose. Eucalyptus and rosemary oils showed 100% mortality within 6 hr after treatment at 10 $\mu\ell/\ell$ (air) dose. GC and GC/MS analysis of the four essential oils and bioassay of their components revealed that 1,8-cineole (a major component of eucalyptus, rosemary and sage oils), thujone (a major component of sage oil) and pulegone (a major component of pennyroyal oil) showed higher adulticidal activity than others.

• The Korean Journal of Pesticide Science
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• v.11 no.3
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• pp.179-185
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• 2007

Esterase isozymes were investigated from digestive juice of M. saltuarius adults after pesticide treatment. Twelve esterase isozymes were separated on 12% native-PAGE gel and stained with three different substrates(${\alpha}$-naphthyl acetate, ${\beta}$-naphthyl acetate, and ${\alpha}$-naphthyl butyrate). Interestingly, the isozyme of Est1(${\alpha}$-naphthyl acetate) was strongly inhibited by the carbofuran and methomyl. The Est1 activity was completely inhibited by the chlorpyrifos and partially inhibited by methidation about 70 %. In addition, eserine suppressed esterase isozyme activities of Est1 about 70% and isozyme activities of Est2, Est3, and Est4 were weakly inhibited. ${\alpha}$-pinene did not suppressed esterase isozyme activities but activities of esterases were very weakly inhibited in camphor and bornyl acetate.

• Korean journal of applied entomology
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• v.62 no.3
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• pp.213-214
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• 2023

In a paper reporting the introduction and settlement of Anoplophora horsfieldii (Hope) into Jeju, it was found that Bactrocera dorsalis (Hendel) was misquoted as "it was introduced into the Jeju area and is currently being discovered." Fortunately, the sentence was quickly discovered and corrected to "it has the potential to be introduced to Jeju Island". Taking this as an opportunity, we would like to emphasize to researchers that it is necessary to verify very carefully when describing the domestic distribution of prohibited quarantine pests. Estimating by the cold stress index of the CLIMEX model, B. dorsalis was predicted to be unable to survive in Jeju in the winter of 2022-2023. However, in the winter of 2023, it was confirmed that the occurrence of A. horsfieldii was found to occur in the summer after overwintering at sub-zero temperatures, and it was judged to have succeeded in settling.

• Korean journal of applied entomology
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• v.36 no.4
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• pp.317-322
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• 1997

Hatched-larvae of the mulberry longicorn beetle, Apriona germari Hope, collected from mulberry fields were reared on artificial diet at 25$^{\circ}$C with 14 h light and 10 h dark to study the larval developmental characteristics. Artificial diet developed for rearing silkworm was used with minor modification adding mulberry branch powder. In case of artificial diet rearing, the head width of larval instar from the I st to the 12th instars was ranged from 0.12 to 0.69cm, and growth rate of each instar was significantly high between the I st and the 2nd instars. In addition, the weight of the 8th instar larvae was increased approximately 176-fold in comparision with that of the 1st instar larvae. Larval duration of each instar took long with larval developmental stages, and that of the 1st to the 9th or the 12th instars was 186.03 or 304.58 days, respectively. The survival rate of larvae was 40.8% by the 8th instar. The pupation rate was approximately 32.4%. Furthermore, although pupation stage was broadly appeared from the 7th to the I lth instars, pupation was majorly observed at the 8th and the 9th instars.

• Korean journal of applied entomology
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• v.42 no.4
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• pp.315-321
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• 2003

Larval entrance and adult emergence holes of Japanese pine sawyer (Monochamus alternatus), primary vector of pinewood nematode (Bursaphelenchus xylophilus), were measured in dead pine logs from 1999 to 2002. Their distributions within pine log were also analyzed. More numbers of entrance and emergence holes were distributed on crown than trunk part as 56.2 and 27.7 holes/m$^2$, respectively Higher proportions of entrance (27.5％) and emergence holes (22.4%) were distributed on the log with 8 to 10 cm diameter; the larger or the smaller logs had fewer holes. Surface area of entrance hole was 65.8 $\textrm{mm}^2$ and diameter of emergence holes was 7.0 mm in average. Average depth of pupal chamber was 24.8 mm from surface to the bottom of the chamber, and its volume ranged from 200 to 2.000 ㎣ Average distance between entrance and emergence holes on bark surface was 3.3 cm. Gallery length from the beginning of entrance hole to the end of emergence hole was 46.2 mm.

• Korean journal of applied entomology
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• v.43 no.1
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• pp.85-89
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• 2004

Numerical measurements were made for fresh weight, body length and width, head width, and color and length of antenna of Japanese pine sawyer, Monochamus alternatus adults, a primary vector of pine wood nematode, Bursaphelenchus xylophilus in Korea. We measured 563 females and 601 males that emerged out of dead pine logs from 2001 to 2002. General linear model analysis showed that measurements of fresh weight, body length, and body width were significantly higher in females than in males. Head width was not significantly different between sexes. Antennal length of males was significantly longer than that of females. For females and males respectively, average fresh weights were 0.305g and 0.277g, body lengths 20.97mm and 19.93mm, body widths 6.52mm and 6.18mm, head widths 3.78mm and 3.70mm, and antennal lengths 31.19mm and 45.49 mm. Antennal length or ratio of antennal length to body length overlapped in some ranges between 2 sexes. Therefore antennal length itself or ratio of antennal length to body length could not be used as a definite criterion to discriminate sexes. However, check on color of the antennae of 4,033 adults revealed without exception that basal part of every segment of flagellum of female antenna was covered with whitish-grey hairs, while whole part of every segment of male flagellum was covered with brownish-black hairs. This characteristics might be a best way to differentiate sex of this species.

• LP가스
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• s.72
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• pp.39-43
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• 2001

자동차충전소의 증가율이 예사롭지 않다. 기껏해야 한 해에 20-30개소씩 증가하던 것이 한 해 동안 무려 다섯 배에 달하는 신규허가가 등장하는가 하면 허가대기중인 업소 역시 수백개소를 헤아리고 있다. 여기에 최근 계속되고 있는 그린벨트내 충전소 배치계획을 보면 지나치게 많은 충전소가 양산될 조짐을 보이는 등 자칫 제2의 주유소 파동까지 우려되고 있다. 충전소의 난립 조짐에 반해 LPG자동차의 증가는 정반대의 양상으로 치닫고 있다. 99년 2000년 두해 동안 LPG차가 비정상적으로 증가하자 정부가 이를 억제하기 위해 대폭적인 특소세 인상이라는 대형 악재를 터트렸기 때문이다. 특소세 인상과 하게 하늘 높은줄 모르고 치솟고 있는 LPG가격도 자동차 연료로서의 가격경쟁력을 약화시켜 이 역시 LPG자동차 보급확대의 걸림돌로 작용하고 있다.

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2002.11a
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• pp.89-89
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• 2002

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2002.11a
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• pp.166-166
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• 2002