대벌레(Ramulus mikado)에 대한 유기농업자재 6종과 녹강균(Metarhizium anisopliae)의 살충 효과 평가

정종국,정복남,이차영,김건희,김준헌,이영수,박지현 한국산림과학회 2023 한국산림과학회지 Vol.112 No.1

Outbreaks of Ramulus mikado (Insecta: Phasmatodea: Phasmatidae) in the hilly areas of Mt. Bongsan, Mt. Cheonggye, and elsewhere in Seoul and Gyeonggi occurred from 2020 to 2021, causing serious defoliation. We eval- uated the insecticidal effects of six eco-friendly organic materials and the insect-pathogenic fungus Metarhizium anisopliae against R. mikado. The fungus was isolated from naturally dead bodies of R. mikado in forest ecosystems. The results revealed that three eco-friendly organic materials containing azadirachtin or geraniol as active ingredients showed high mortality in the range of 85.2%–100%, which were rates similar to that of the chemical insecticide fenitrothion emulsi- fiable concentrate. All R. mikado adults that were sprayed with a conidial suspension of M. anisopliae at different concentrations were killed within a few days. In conclusion, three eco-friendly organic materials and M. anisopliae could be good alternatives to chemical insecticides. 2020~2021년 은평구 봉산, 의왕시 청계산 등지에서 돌발적으로 대발생하여 산림에 피해를 주었던 대벌레(Ramulus mikado)의 친환경 방제를 위해 시판 중인 유기농업자재 6종과 산림 내에서 자연폐사한 대벌레에서 분리한 녹강균(Metarhizium anisopliae)의 살충 효과를 검정하였다. 유기농업자재 중에서는 azadirachtin과 geraniol을 포함하는 식물성 오일 3종이85.2~100%로 높은 치사율이 확인되었으며 이는 화학 살충제인 페니트로티온 유제와 유사한 수준이었다. 녹강균의 분생포자를 희석하여 대벌레의 몸에 직접 분주하거나 사육장 내에서 분무기로 살포한 경우 모두 수일 내 100% 사망하는 것을확인하였다. 본 연구를 통해 확인된 유기농업자재 3종과 녹강균 등은 향후 친환경 방제제 선발 및 사용 시 우선적으로 고려할 수 있을 것이라 판단된다.

Ground beetle (Coleoptera: Carabidae) assemblage in the urban landscape, Korea

정종국,이준호,김승태,이수연,박창규,이은희 한국생태학회 2012 Journal of Ecology and Environment Vol.35 No.2

This study was conducted with the intention of clarifying the effects of land-use types on a species of ground beetle’s richness,abundance, and composition; the study focused on urban landscapes. We also selected the potential bioindicators classifying land-use types; eleven sites were selected from an urban landscape in Korea. Overall, land-use types in urban landscapes did not appear to cause significant decrease in species richness or the abundance of total ground beetle assemblage. According to habitat preferences, several land-use types and distances from the forest significantly affected the species richness and abundance, while the open-habitat species were not affected by these variables. Land-use types were classified into two major groups, forest and non-forest areas, based on ground beetle assemblage; several indicators,such as Dolichus halensis halensis and subfamily Carabinae species, were of particular consideration. In conclusion, environmental change by anthropogenic disturbance can cause different effects on ground beetle assemblages, and forest specialists can be negatively affected.

Comparison of Ground Beetle Communities (Coleoptera: Carabidae) between Coniferous and Deciduous Forests in Agricultural Landscapes

정종국,김승태,이수연,유정선,이준호 강원대학교 산림과학연구소 2013 Journal of Forest Science Vol.29 No.3

This study was conducted to examine the community structure of ground beetles between coniferous- and deciduous-dominant forest in agricultural landscapes, in Miryang-si, Yeongdong-gun, Icheon-si, and Cheolwon-gun during April to October in 2009. A total of 19 species belonging to 15 genera of 9 subfamilies were identified from 6,253 collected ground beetles. Dominant species from 4 regions were Synuchus nitidus (3,715 individuals, 59.4% of total) and Synuchus cyloderus (1,783 individuals, 28.5%) respectively. Non-metric multidimensional scaling based on Bray-Curtis similarity showed that ground beetle assemblage was not different between forest stands, but it was significantly different among regions. Overall, forest stands of secondary forests may not show a different community structure of ground beetle assemblages in our study. However, monitoring on the ground beetle fauna as well as other arthropods of secondary forests in agricultural landscapes is still important for the management and conservation of biodiversity, because forests provides important habitats for many predatory arthropods, such as ground beetles, spiders and rove beetles.

Distribution of ground beetles (Coleoptera: Carabidae) in Naejangsan National Park, Korea

정종국,이준호,이수연,김승태 한국환경생태학회 2015 한국환경생태학회지 Vol.29 No.2

This study was conducted to investigate the distributional characteristics of ground beetles and to provide basis information for biodiversity management including the ground beetles in the Naejangsan National Park area. Pitfall traps were installed throughout 20 sites within Naejangsan National Park during 2008 to 2011 to collect ground beetles. A total of 2,409 collected ground beetles were identified with 35 species belonging to 19 genera of 8 subfamilies. Coptolabrus jankowskii jankowskii, Eucarabus sternbergi sternbergi, and Pterosticus audax were dominant at the core area, while Pheropsophus jessoensis, Synuchus nitidus, Synuchus cycloderus, and Chlaenius naeviger were dominant at the border of the National Park and adjacent to the road or grassland. These differences of dominant species also affected to the similarity of species composition between core and border area, and caused increasing dissimilarities between sites with cluster analysis. Although the result of the present study was a case study using ground beetles, it will be helpful to develop a management strategy of biodiversity conservation in Naejangsan National Park and its surroundings.

Biological Control and Management on Scotinophara lurida (Pentatomidae, Hemiptera) in Korea

정종국,강태화,김상웅,서민경,양현주,정현철 한국농약과학회 2023 한국농약과학회 학술발표대회 논문집 Vol.2023 No.4

Differences in Temporal Variation of Ground Beetle Assemblages (Coleoptera: Carabidae) between Two Well-Preserved Areas in Mt. Sobaeksan National Park

정종국,석상욱,김병영,홍의정,김영진,정종철 강원대학교 산림과학연구소 2017 Journal of Forest Science Vol.33 No.2

Understanding how future climate conditions will be impact on the biodiversity and species composition is important, because biodiversity becomes more important in environment assessment. To understand the biological changes including diversity and species composition over time (temporal variation within a year), the species diversity and composition of ground beetles were investigated in two well-preserved areas in the Sobaeksan National Park using pitfall traps. In addition, relationships between ground beetles and environmental variables were studied by considering temporal variation. We collected 2,146 ground beetle specimens representing 45 species, and individual-based rarefaction curves indicated that similar species richness was found between Geumseon Valley (GV) and Namcheon Valley (NV). The Bray-Curtis matrix comparisons between study sites were characterized by similar ground beetles sample heterogeneity, while temporal variations in abundance, species richness, and b-diversity of ground beetles showed rather difference over time according to location of study sites. In GV site, minimum temperature was selected as the best predictor for abundance, species richness, and b-diversity of ground beetles, while those relationships in NV site were more complicated. In conclusion, our study suggests that understanding the different response of ground beetles to climatic variables related to local habitat conditions is important to predict the effect of climate change on biological communities.

A comparison of diversity and composition of carabid beetles between overpasses and underpasses in fragmented forest areas

정종국,박유정,이효석,이준호,고상현,최태영,우동걸 한국응용곤충학회 2017 Journal of Asia-Pacific Entomology Vol.20 No.4

Wildlife crossing structures are important for increasing biodiversity of wildlife and other animals. Thus, the objective of this study was to compare the community structure of carabid beetles along environmental transects of forest–edge–crossing structures in fragmented forest areas. In addition, we also investigated whether there were differences in carabid beetle assemblages due to structural differences in crossing structures, i.e., overpass and underpass. A total of 3,737 carabid beetles belonging to 60 species were collected by pitfall trapping across environmental transects from June 6 to September 3, 2015. In crossing structures, environmental variables, such as soil texture, soil organic matters, and habitat structures were different from those in neighboring habitats. Abundance and species richness of carabid beetles in underpasses were significantly lower than those in neighboring habitats and overpasses. In particular, underpasses, especially those with more artificial structures in terms of soil properties and microhabitat, appeared to be less appropriate structures for movement of carabid beetles. Although less carabid beetle species were caught in crossing structures, species composition of carabid beetles were more similar to forest areas. In conclusion, efforts are needed to improve the connectivity of habitats and consider the needs of invertebrates by providing suitable microhabitats for wildlife crossing structures.

소나무재선충병 매개충의 생태 연구를 위한 격리 시설의 필요성

정종국,정찬식,고상현 한국응용곤충학회 2017 한국응용곤충학회 학술대회논문집 Vol.2017 No.04

소나무재선충병은 1988년 부산 금정산에서 발견된 이후 소나무류에 큰 피해를 주고 있으며, 국내에는 솔수염하늘소 와 북방수염하늘소가 소나무재선충을 매개하는 것으로 알려져 있다. 우화한 성충의 기관 속에는 수 천에서 수 만 마리의 소나무재선충이 발견되기 때문에 소나무재선충 보유 여부에 따라 생태적 특성의 변화가 예상된다. 그러나 국내에서는 소나무재선충병 방제특별법 제정 이후 소나무재선충 감염 지역에서의 특별한 사유 없이는 소나무 반출이 금지되고 있으며, 소나무재선충을 보유한 하늘소에 대한 생태 연구는 매우 제한적으로 수행되고 있어 격리 시설이 필요한 실정이다.

Lethal and sublethal effects of thiacloprid on non-target carpenter ant, Camponotus japonicus Mayr (Hymenoptera: Formicidae)

정종국,정찬식,고상현 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.4

To control population of Monochamus beetles that transmit pine wood nematode, Bursaphelenchus xylophilus, a variety of insecticides have been applied to forest ecosystems in Korea. Non-target predatory insects can be directly or indirectly exposed to insecticides. We evaluated potential lethal and sublethal effects of thiacloprid on survival and behavior of carpenter ants, Camponotus japonicus Mayr. Field-collected ants were directly exposed to several food items such as thiacloprid-exposed Monochamus beetles, 10% sugar water with thiacloprid concentrations, and 10% sugar water at group and individual levels. In experiment for groups of individuals, dead beetle bodies generally had possible adverse effects on ants through dietary exposure, because two forager ants were dead or paralysis after they were exposed to thiacloprid-exposed Monochamus beetles. At individual level, dietary exposure to thiacloprid at concentrations of 10 and 50 mg/L was lethal to ants, causing paralysis and impaired walking. Mortality of ant workers was higher in direct or indirect exposure treatments than that in the control. Some ants exposed to thiacloprid showed abnormal behavior within a few days, especially at thiacloprid concentrations of 10 and 50 mg/L. However, some of them sometimes recovered from the abnormal behavior in a day. In consequence, application of thiacloprid in pine forests may disrupt species interaction and foraging behavior of ants, but the effect of thiacloprid through trophallaxis behavior should be further assessed using more extensive colonies composed of queen, workers, brood, and so on.

고온가스 처리용 세라믹 필터의 국산화 기술 개발 및 응용

정종국,Jeong, Jong-Guk 환경보전협회 2009 환경정보 Vol.31 No.379