참나무시들음병 매개충인 광릉긴나무좀(Platypus koryoensis (Murayama))(Coleoptera: Platypodidae)의 에탄올과 신갈나무 수피 추출 물의 유인효과에 대하여 조사하였다. 유인트랩과 유인목 시험에서는 에탄올과 신갈나무 수피 추출물을 사용한 처리구가 대조구(무처리)보다 높 은 유인효과를 나타내었으나, 두 유인제 간의 유의성은 찾지 못하였다. 유인목의 직경별 침입공 수를 비교한 결과, 침입공 수는 직경이 클수록 증 가하였다. 유인목의 횡단면 상부와 하부 침입공 수를 비교한 결과, 상부보다 하부에 침입공이 많았고, 통계적으로 유의한 차이(p<0.05)를 나타내 었는데, 이는 직사광선에 의한 건조가 적은 하부가 매개충의 먹이가 되는 미생물 번식에 유리하기 때문이라고 추정되었다. 결과적으로 신갈나무 수피 추출물보다 비용 면에서 경제적인 에탄올이 광릉긴나무좀 모니터링 및 방제에 효율적으로 활용될 수 있을 것이며, 신갈나무 수피 추출물은 효율을 높일 수 있는 계속적인 연구의 필요성이 있다.

Spatio-temporal distribution pattern of an ambrosia beetle, Platypus koryoensis (Murayama) which is vector of Raffaeleaquerci-mongolicae K.H. Kim et al, a causative agent for Korean oak wilt (KOW) was examined in the stand level. Spatial distribution of P. koryoensiswas influenced by their density. Relationship between degree of aggregation and density was positively correlated when the density was extremely low or high whereas the relationship was reverse when the density was intermediate. Patch of P. koryoensis formed around or near dead trees or partial dead trees, suggesting these trees indicated epicenter of P. koryoensis. Fraction of trees attacked by less than 100 individual of P. koryoensis in the stand per year increased abruptly whereas fraction of trees attacked over 1,000 individuals of P. koryoensis increased gradually. Our results showed that the dead trees would be an epicenter of P. koryoensis and the number of trees killed by the ambrosia beetle would be reduced by lowering total population of the ambrosia beetle around the epicenter.

Differences in the number of Platypus koryoensis (Murayama) (Coleoptera: Platypodidae) trapped in different trap types, colors and positions on the trunk were evaluated to develop a monitoring trap for Platypus koryoensis, a known vector of Korean oak wilt disease. The experiments were conducted in an oak forest located in Gwangtan-myeon, Paju-si, Gyeonggi-do, Korea using two types of trap: sticky trap and multi-funnel trap. Trapping efficiency of the two trap types was not significantly different. Trapping efficiency of the sticky trap was not affected by four trap colors: yellow, black, white and transparent. The number of beetle caught was higher in the traps facing the upper slope than the lower slope regardress of trap type. Our results showed that both traps type are useful for monitoring Platypus koryoensis.

Trapping efficiency by trap types, colors and positions in the trunk was evaluated for monitoring and the integrated pest management of Playtpus koryoensis, known as a vector of Korean oak wilt disease. The experiments were conducted in oak forest located in Gwangtan-myeon, Paju-si, Gyeonggi-do, Korea using two types of trap: sticky trap and multi-funnel trap. Trapping efficiency of two trap types was not significantly different. Trapping efficiency of the sticky trap was not affected by four trap colors: yellow, black, white and transparent. The number of caught by the traps, regardless of trap types, was higher in the traps facing upper slope than lower slope.

An ambrosia beetle, Platypus koryoensis, is known as a major vector of Korean oak wilt disease (KOW) to Mongolian oak and it is considered as the one of the major threat to forest ecosystem health. This study was conducted to assess damage on Mongolian oak inflicted by the ambrosia beetle on the basis of entry hole density and location within the trunk. Two hundred forty Momgolian oak trees from Mt. Uam (Gyonggi-Do, Korea) and 60 from Mt. Gyebang (Gangwon-Do, Korea) were randomly selected. Initially, the damage degree on an individual tree and the diameter at breast height (DBH) were measured, and followed by the measurement of entry hole density per 148 X 210 mm2 on lower trunk (above the surface of the earth) and upper (100 cm above the surface) on each upslope and downslope. The damage degrees were divided into three classes: Ⅰ indicating healthy tree, Ⅱ tree damaged by the ambrosia beetles and Ⅲ dead tree by the KOW. As the damage class of the Mongolian oaks increased, the number of the entry holes increased regardless of locations of entry holes. The density of entry hole lower trunk was higher than that in upper trunk, showing that the ambrosia beetle preferred to attack the lower trunk on downslope. In addition, the results showed a tendency that the average DBH of the oak trees increased as the damage class increased from Ⅰ to Ⅲ. This suggests that the ambrosia beetle prefers to attack older trees. The entry hole densities on each lower and upper trunk on downslope were principal components to assess the damage degrees of the Mongolian oak.

The first occurrence of oak wilt disease(OWD) in Korea was reported in 2004 and a Platypodid beetle, Platypus koryoensis, was known to contribute significantly the occurrence of the disease. To reduce the oak wilt disease, it is necessary to control density of P. koryoensis under injury level. This experiment conducted to clarify the flying period of adult P. koryoensis. Four forests containing dead trees by OWD were selected and the location of the experimental sites were Mt. Surak in Seoul, Goyang-si, Paju-si in Gyeonggi-do, Hongcheon-gun in Gangwon-do. Sticky trap or vertical multi-funnel trap was settled on Quercus mongolica trees located in infested forest. Density of P. koryoensis was survey with one or two week interval from May to October in 2007 and 2008. The number of the beetle collected by the vertical trap and sticky trap was positively correlated (r2=0.69). The optimum flying period of the beetle was ranged from late June to late July with geographical variations.

Ambrosia beetle, Platypus koryoensis, is a vector of oak wilt disease caused by Raffaelea sp. in Korea. The degree of damage by oak wilt disease was dependent on the density of the beetles in the oak trunk, a relationship between the degree of damage by oak wilt disease and the density of beetle on the basis of the number of entry hole was studied. Entry hole distribution within tree trunk was analyzed by the nearest neighbor method. Thirty four oak trees (Quercus mongolica) located in survey area were selected and then degree of damage, the number of attack hole/623 ㎠ in upper (50 ㎝ from the surface) and lower (surface) trunk and the nearest neighbor distance between the holes were measured. The number of hole and the nearest neighbor distance in upper and lower part were positively correlated with each other. As the degree of damage was severer, the number of the holes increased, whereas the nearest neighbor distance decreased. The distribution pattern of the hole was changed from clumped one to uniform as the severity of damage increased. These results suggested that Platypus koryoensis attacked the oak tree in concentrative manner at initial stage of attack but at final stage, it distributed uniformly to reduce intraspecific competition between the beetles.

Occurrence of the oak wilt disease (Raffaelea sp.) was confirmed in 2004 for the first time in Korea. By using pictorial keys, morphological characteristics of Platypus koryoensis (Murayama), a vector for this disease in Korea, was compared to Platypus quercivorus (Murayama), a vector of oak wilt in Japan. Additionally, suggestions were made for the future research of the vector of oak wilt disease in the northeastern Asia.

2000년 3월부터 11월까지 부산항으로 수입된 목재류에서 검출된 나무좀과(Scolytidae), 긴나무좀과(Platypodidae), 개나무좀과(Bostrichldae), 가루나무좀과(Lyctidae)의 종류 및 검출된 기주와 수입국을 조사하여 국내 유입의 가능성이 있는 해충을 파악하는 한편, 이들 해충의 국내 유입을 차단하기 위한 자료로 활용 하고자 본 조사를 실시하였다. 부산항의 수입재에서 검출된 나무좀과, 긴나무좀과, 개나무좀과, 가루나무좀과는 총 23속 52종이었으며, 검출된 수입재는 15개 국에서 수입한 13과 19종의 원목, 제재목, 기타 등이었다. 나무좀과에서는 3아과 16속 35종이 검출되었다. Xyleborus속에서 12종, Ips속에서 6종, Trpodendron속에서 3종, Arixyleborus속에서 2종, 그 외 Alniphagus속 등에서 12속에서 각각 1종씩 검출되었다. 검출된 수종은 말레이시아를 비롯한 11개국에서 수입한 13속 16종이었으며, 남양재인 말레이시아산 나왕류에서 2속 13종의 가장 많은 종이 검출되었다. 긴나무좀과는 Platypus cupulatus, P. curtus 등 1아과 1속9종이 채집되었다. 검출된 수종은 호주, 파푸아 뉴기니아 등 6개국에서 수입한 4속6종이었고, 말레이시아산 나왕류에서 6종이 검출되었다. 개나무좀과는 2아과4속5종이 검출되었다. Herernbostrychus aequalis, Dinoderus bifoveoratus 등이 검출되었다. 검출된 수종은 말레이시아, 엘살바도르등 4개국에서 수입한 4속 6종이었으며 말레이시아산 나왕류에서 4종이 검출되었다. 가루나무좀과는 Trogoxylon sp., Minthea rugicoliis, Minthea sp. 등 2속 3종이 검출되었다. 검출된 수종은 필리핀 등을 비롯한 3개 국에서 수입한 2속 3종이었다.an으로 강한 대조도를 갖는 128x128의 고해상도 EPI 영상을 얻을 수 있었다. 결론 : 제안한 Half Fourier기법을 이용하여 기존의 영상보다 해상도를 높인 EPI영상을 single scan으로 얻을수 있었으며, 에코의 적절한 배치를 통해 임상에서 널리 사용되는 대조도를 얻을 수 있었다. 제안한 방법은 특별한 하드웨어의 추가 없이, 펄스 시퀀스와 tuning 및 재구성 알고리즘 등의 소프트웨어적인 방법만으로 구현이 가능하여 많은 임상 응용이 기대된다.체 실험을 통하여 확인하였다.

한국산 긴나무좀과와 나무좀과의 동정에 도우믈 주고자 체계적으로 아과, 족, 속에 대한 검색표를 마련하였으며 미 기록 속인 Scolytogenes 가 추가 되었고 전체적인 형태, 촉각등도 도시하였다.

In this first paper of the main title, Platypodidae and a part of Scolytidae were included due to limited space. From the result, five species of Platypodidae, two species of Scolytoplatypinae and five species of Scolytinae including one newly recorded species (marked) from Korea, were redescribed with their list of known hosts in home and from abroad.

The twelve species of Scolytidae and six species of Platypodidae were recognized from imported logs at Incheon, Gunsan and Busan ports. One species, Hypothenemus hampei (Ferrari) of Scolytidae was identified from coffee bean. These species were not reported before from imported logs and seeds. Scolytidae Platypodidae Scolytus frontalis Blandford Crossotarsus nitens Chapuis Hylurgopsl gabratus Zetterstedt P. lepidus Chapuis Gnathotricus sulcatus (Leconte) Diapus quinquespinatus Chapuis Hypothenemus hampei (Ferrari) Genyocerus abdominalis Schedi Ips concinuus (Mannerheim) G. compactus Schedl Poecilips subcribrosus (Blandford) G. sexporus (Schedl) xyleborus agnatus Eggers X. cognatus Blandford X. emarginatus Eichnoff X. mascarensis Eichhoff X. pseudomajor Schedl X. pseudopilifer Schedl.

국립식물검역소 인천지소에 소장중인 수입원목해충 중 나무좀류를 동정한 결과 다음과 같이 나무좀과에서 2 아과 6속 14종이 긴 나무좀에서 2아과 2속 11종이 확인되었다. Scolytidae Ipinae Arixyleborus granulifer A. rugosipes Xyleborus posticepilosus X. similis X. subcostatus Ips pini I. plastographus I. tridens Trypodendron lineatum Hylesininae Dendroctonus adjunctus D. brevicomis D. frontalis D. ponderosae Hylurgops porosus Platypodidae Platypodinae Platypus agnatus P. biuncus P. curtus P. geminatus P. jansoni P. maritimus P. pseudocupulatus pseudocupulatus P. shoreanus bifurcus P. solidus Diaporinae Diapus pendleburyi D. pusillimus.