• 제목/요약/키워드: Forest insect pest

검색결과 74건 처리시간 0.027초

나라꽃 무궁화 30품종에서 발생하는 해충상 비교 (Comparison of Insect Pest Communities on 30 Cultivars of Hibiscus syriacus)

  • 정종국;김만년;이차영;장범준;김동수;권해연;박윤미
    • 한국산림과학회지
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    • 제110권1호
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    • pp.116-127
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    • 2021
  • 본 연구는 나라꽃인 무궁화의 주요 품종별 해충상을 조사하고, 무궁화 30품종에서 발생하는 주요 해충의 밀도를 비교하기 위해서 수행되었다. 2018년부터 2020년까지 수원과 부산에서 육안조사법으로 해충상을 조사한 결과, 개체수의 대부분을 차지하는 목화진딧물을 제외하고 부산에서는 20종 1,147개체의 해충이 채집되었고, 수원에서는 31종 2,240개체의 해충이 채집되었다. 품종에 따른 종수와 개체수 차이는 없었으나, 지역에 따른 차이는 있었다. 우점종은 목화진딧물, 점노랑들명나방, 왕붉은잎큰나방, 목화명나방, 썩덩나무노린재의 순이었다. 우점종의 발생 역시 품종 보다는 조사 지역과 연도에 따른 차이만 있었다. 결론적으로 무궁화의 품종 차이가 해충상 및 주요 해충의 발생에 미치는 영향은 확인할 수 없었으며, 무궁화가 식재된 주변 환경의 차이가 해충상에 큰 영향을 주는 것으로 판단된다.

국내 산림해충 페로몬 연구현황과 발전 방향 (Current Status of Pheromone Research of Forest Insect Pests in Korea and Development Direction)

  • 박일권
    • 한국응용곤충학회지
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    • 제61권1호
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    • pp.63-75
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    • 2022
  • 페로몬을 비롯한 화학통신물질들은 곤충의 화학 통신에 이용되는 물질들로 개체군 모니터링, 대량 포획 및 교미교란 등에 폭넓게 이용되고 있다. 본 종설에서는 북방수염하늘소, 솔수염하늘소, 솔껍질깍지벌레, 광릉긴나무좀, 회양목명나방, 솔알락명나방, 매미나방, 복숭아유리나방, 별박이자나방 등 국내 주요 산림해충의 페로몬 연구현황을 소개하고 국외의 연구 결과와 비교하였다. 국내 연구현황 분석을 통해 추후 산림해충 페로몬 연구 방향을 제시하고 발전 방향에 대해 제언하였다.

Damage Report on a Newly Recorded Coleopteran Pest, Aphanisticus congener (Coleoptera: Buprestidae) from Turfgrass in Korea

  • Kang, Byunghun;Kabir, Faisal Md.;Bae, Eun-Ji;Lee, Gwang Soo;Jeon, Byungduk;Lee, Dong Woon
    • Weed & Turfgrass Science
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    • 제5권4호
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    • pp.274-279
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    • 2016
  • Aphanisticus congener is a newly recorded buprestid (Coleoptera) insect pest of turfgrass in Korea. This buprestid pest was initially found from turfgrass conservation site in a greenhouse in Jinju, Gyeongnam province, Korea in July, 2014. The Aphanisticus in the family Buprestidae is a leaf miner. A. congener is the close species of A. aeneus which was firstly reported as sugarcane leaf sucker in India. A. congener was active from early July to late August in the greenhouse. Damage by the insect led to drying out and browning of turfgrass leaf because larva fed on cell sap of leaves and adult fed on leaf surface. A. congener damaged Zoysia japonica, Z. sinica, Conodon dactylon, and Poa pratensis when adults were artificially released into potted turfgrasses in the laboratory. In green house, A. congener damaged Z. japonica, Z. macrostachya, Z. matrella, Z. sinica, Conodon dactylon, and hybrid zoysiagrass. However, no damage symptoms were observed from the same turfgrass accessions in the nearby field of the greenhouse. Thus, the new coleopteran pest may be a warm-adapted pest for turfgrass, damaging turfgrass leaf only in warmer conditions.

Distribution patterns of Monochamus alternatus and M. saltuarius (Coleoptera: Cerambycidae) in Korea

  • Kwon, Tae-Sung;Lim, Jong-Hwan;Sim, Sang-Jun;Kwon, Young-Dae;Son, Sung-Kil;Lee, Kooi-Yong;Kim, Yeon-Tae;Park, Ji-Won;Shin, Chang-Hoon;Ryu, Seok-Bong;Lee, Chong-Kyu;Shin, Sang-Chul;Chung, Yeong-Jin;Park, Young-Seuk
    • 한국산림과학회지
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    • 제95권5호
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    • pp.543-550
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    • 2006
  • Distribution patterns of two pine sawyer species (Monochamus alternatus which is the main vector insect and M. saltuarius which is the potential insect vector of the pine wood nematode) were investigated in Korea. The data were collected at 89 study sites which were chosen to cover the whole region of South Korea. The selected pine trees were killed in early April and left for I year in the pine stands to be egg-laid by the pine sawyers. Emergence of the beetles from the dead pine trees was checked from early April to late July. M. saltuarius was the most abundant in the mid to northern areas of South Korea, whereas M. alternatus in Jeju-do, southernmost island of Korea. Considering temperature distribution patterns in areas where the two species occur, their thermal distribution boundary may be formed around $13.2^{\circ}C$ of annual mean temperature. The hypothesized distribution map of the two Monochamus species under the invasion of pine wilt disease is suggested on the base of thermal distribution of Korean peninsula.

PCR을 이용한 벚나무 빗자루병균(Taphrina wiesneri)의 월동부위 검출 (Detection of Overwintering Sites Inhabited by Cherry Witches' Broom Pathogen Taphrina wiesneri with Species-specific PCR in Korea)

  • 손수연;이선근;서상태
    • 한국산림과학회지
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    • 제104권2호
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    • pp.332-335
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    • 2015
  • 자낭균인 Taphrina wiesneri는 한국의 공원과 도로 주변에 주로 식재되는 왕벚나무에 빗자루병을 발생시킨다. 이 병원균은 생태적 특성이 잘 알려져 있지 않아 방제법 등을 개발하는데 어려움이 있다. 이번 연구에서는 빗자루 병원균의 월동부위를 조사하기 위해 빗자루 병징을 보이는 왕벚나무의 건전가지와 이병가지, 그리고 병징이 나타나지 않은 건전한 왕벚나무 가지에서 종 특이적 primer (TwITSF와 TwITSR)를 사용하여 월동부위를 조사하였다. 그 결과 빗자루병에 감염된 왕벚나무의 이병가지 뿐만 아니라 건전가지에서도 종 특이적인 PCR 증폭산물이 관찰되었으며, 그 이외의 건전한 왕벚나무와 감염목 주변의 다른 식물 종 샘플에서는 PCR 증폭산물이 관찰되지 않았다.

서해안 곰솔림에서의 리지나뿌리썩음병 발생 및 확산 유형 (Occurrence of Rhizina Root Rot in a Black Pine (Pinus thunbergii) Forest Located at the Western Coastal Area in Korea and Its Spreading Patterns)

  • 이승규;김경희;김연태;박주용;이상현
    • 식물병연구
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    • 제11권2호
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    • pp.208-212
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    • 2005
  • 2002년 6월에 서해안의 태안군 남면 달산3리에 위치한 약 20ha의 곰솔림내 27개소에서 각 개소당 평균 10나무씩 무리를 지어 합계 294그루가 고사한 상태로 발견되었다. 2002년 6월부터 2004년 8월까지 4개 고정조사구에서 죽거나 죽어가고 있는 나무의 상태와 피해지에서 발생하고 있는 파상땅해파리버섯의 위치를 조사한 결과, 1) 피해목이 최초 고사목 발생장소로부터 불규칙 동심원을 이루면서 확산양상을 보이고 있으며, 2) 파상땅해파리버섯이 죽은 나무의 주변에서 집중적으로 발생하고, 3) 나무를 고사시킬 수 있는 해충이나 병원체가 발견되지 않아이 지역에서의 나무집단고사는 리지나뿌리썩음병원균(Rhizina undulate)에 의한 것으로 판단되었다. 피해지토양의 이화학적 특성에 대한 조사결과, 피해지 토양의 pH는 $4.6\~5.79$이었으며, 토양양료수준도 대단히 낮은 상태이었다. 태안 피해지에서는 리지나뿌리썩음병 발생의 중요한 유인인자로 알려져 있는 모닥불 등 '불'을 사용한 흔적이 발견되지 않았으므로 본 병해 발생과 관련된 다양한 환경적 유인에 대한 정밀검토가 필요할 것으로 사료된다.

The Effects of Drought on Forest and Forecast of Drought by Climate Change in Gangwon Region

  • Chae, Hee-Mun;Lee, Sang-Sin;Um, Gi-Jeung
    • Journal of Forest and Environmental Science
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    • 제28권2호
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    • pp.97-105
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    • 2012
  • A Gangwon region consisting of over 80% of forest area has industries that have been developed by utilizing its clean region image. However, the recent climate change has increased the forest disease & insect pest as well as the forest fire and the major cause is known to be the increase in the frequency of a drought occurrence. From the aspect of climate change, it can be said that drought and forest are important in every aspect of the adaptation and mitigation of climate change measure as they increase forest disease & insect pest that leads to desolation of usable forest resource. In addition, the increase of forest fire reduces resources that can absorb greenhouse gas, which leads to increase in green house emission. The purpose of this study is to provide a motive for concentrating administrative power for protecting forest in a Gangwon region by selecting a drought management needed local government through a drought forecast according to the climate change scenario of a Gangwon region.

Effects of Water Stress on the Endophytic Fungal Communities of Pinus koraiensis Needles Infected by Cenangium ferruginosum

  • Lee, Sun Keun;Lee, Seung Kyu;Bae, Hanhong;Seo, Sang-Tae;Lee, Jong Kyu
    • Mycobiology
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    • 제42권4호
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    • pp.331-338
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    • 2014
  • To examine the effects of water stress and Cenangium ferruginosum (CF) on the fungal endophytic community of needles of Pinus koraiensis (PK), fungal endophytes isolated from the needles of 5-year-old PK seedlings were compared before and after exposure to water stress conditions and artificial inoculation with CF ascospores. Artificial CF inoculation was successfully confirmed using PCR with CF-specific primers (CfF and CfR). For comparison of the degree of water deficit in water-stressed and control groups of PK seedlings infected with CF, the water saturation deficit and water potential were measured. Lower water potential estimates were found in the water-stressed seedlings than in the control group. The fungal endophytes isolated from the second-year needles of non-water-stressed seedlings before and after CF inoculation revealed that primary saprobes were approximately 30% and 71.7%, respectively, and the remaining endophytes were rot fungi or pathogens. Sixty days after CF inoculation, diverse fungal endophytes in the first-year needles were isolated from the water-stressed seedlings. However, some fungal endophytes isolated from the non-water-stressed seedlings were also identified. Fungal endophytes in the second-year needles of the water-stressed and non-water-stressed seedlings were approximately 8% and 71.7% of saprobes, respectively, and the remaining endophytes were rot fungi or pathogens. On the basis of the results, we conclude that water deficit and CF can have an effect on fungal endophytic communities in the needles of PK seedlings.

람사르협약의 습지보호지역으로 지정된 전북 고창 운곡습지의 곤충상에 관한 연구 (Insect Fauna of Ungok Wetland in Gochang, Jeonbuk, Korea, Designated as a Wetland Protection Area at Ramsar Convention)

  • 김동언;김종명
    • 한국환경과학회지
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    • 제22권9호
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    • pp.1141-1152
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    • 2013
  • Insect fauna were surveyed in 2011 at Ungok wetland, Obeygol, located in Gochang, Jeonbuk, Korea. In total, 149 species belonging to 11 orders and 57 families were surveyed. Among them, Lepidopterans composed 23.5% (35 species) of the total insect numbers surveyed, comprising the most abundant group, and followed by Coleoptera, Hemiptera, and Odonata with a composition of 22.1% (33 species), 17.4% (26 species), and 10.1% (15 species), respectively. Bothrogonia japonica Ishihara was the most dominant species, and followed by Gastrophysa atrocyanea Motschulsky and Celastrina argiolus (Linnaeus). Phytophagous insects accounted for 60 percent of the total species. Dominance index was the highest in spring by 0.21. Diversity, richness, and evenness indices were the highest in summer by 4.07, 11.84 and 0.96, respectively. In the study area, the legally-protect species were grouped into five groups; 9 export-restricted species, 17 endemic species, 28 indicator species, 1 climate-sensitive biological indicator and 3 southern characteristic species. Additionally, twenty forest insect pest species were surveyed, belonging to 5 orders and 15 families. Therefore, it is required to conduct long-term monitoring and appropriate management based on the ecological characteristic of the habitats to continuously conserve and maintain of wetland.