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.

살충제 살포가 금정산 소나무림 내 무당거미(거미목 : 왕거미과)의 생물적 형질에 미치는 영향

정종국,김준헌,김동수,정철의,Jung, Jong-Kook,Kim, Junheon,Kim, Dongsoo,Jung, Chuleui 한국응용곤충학회 2020 한국응용곤충학회지 Vol.59 No.3

최근 소나무재선충의 매개충을 방제하기 위한 방제법으로 널리 이용되고 있는 항공방제의 환경 영향에 대한 논의가 계속되고 있다. 본 연구에서는 2017년 경남 양산 금정산 일대를 무처리구와 처리구(3회 살포 및 5회 살포)로 구분한 뒤, 유인항공기로 살포된 티아클로프리드가 비표적 절지동물인 무당거미의 생물적 형질(체중, 체장, 머리가슴의 폭 및 뒷다리 전체 길이)에 미치는 영향을 조사하였다. 2017년 10월 11일에 각 조사구에서 성숙한 무당거미 암컷 성충을 채집하였다. 조사 결과, 무당거미의 생물적 형질은 살충제 살포 여부에 따라 통계적으로 유의하게 달라졌는데, 특히 체장, 머리가슴의 폭, 그리고 뒷다리의 전체 길이는 항공방제구에서 채집된 무당거미가 무처리구에서 잡힌 개체에 비해 짧은 것으로 나타났다. 그러나 살충제 살포 횟수에 따른 차이는 관찰되지 않았다. 결론적으로 무당거미의 형태적 특성은 살충제 살포에 의해 직접적 또는 간접적으로 영향을 받았을 가능성이 있으며, 이는 장기적으로 개체군의 건강성에 영향을 줄 것이라 생각된다. 따라서 향후 장기적으로 살충제(직접 효과)와 먹이 가용성(간접 효과)에 대한 무당거미의 반응에 대한 모니터링이 수행되어야 할 것이다. Debates over the ecological and public health impacts of aerial pesticide sprays are increasing. This is particularly true for controlling Monochamus beetles, which are vector insects of pinewood nematodes. In 2017, adult female orb-web spiders, Trichonephila clavata, were sampled from pine forests in Yangsan-si, Gyeongsangnam-do, Korea, where the aerial pesticide spray, fenitrothion or thiacloprid, was used for several decades. The biological traits of the spiders (body weight, body length, carapace width, and total hind leg length) were compared among treatment sites (no-spray, sprayed three times, and sprayed five times), and differences were observed. The body length, carapace width, and total hind leg length of the spiders in the sprayed areas were significantly shorter than in the no-spray area, but there were no differences between the area sprayed three or five times. These results indicate that repeated exposures to an aerial pesticide spray can alter morphological parameters, which influences population-level fitness. Future studies should monitor the spider long-term responses to pesticides (a direct effect) and prey availability (an indirect effect).

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.

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.

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

Effects of pitfall trap size and sampling duration on collection of ground beetles (Coleoptera: Carabidae) in temperate forests

정종국,정종철,이준호 한국곤충학회 2019 Entomological Research Vol.49 No.5

Pitfall trapping is a standard sampling method to compare the abundance or community structure of ground beetles. However, effects of sampling duration on biodiversity estimation of ground beetles according to different trap sizes have not been experimentally evaluated in temperate forests in Korea. Therefore, the objective of this study was to determine the interaction between trap sizes (SB, small-sized bottle; MB, medium-sized bottle; PC, plastic cup; PJ, plastic jar; PT, perforated type trap; FT, funnel-type trap) and sampling duration (T1, 2 weeks × 2 sessions, 28 days; T2, 2 weeks × 4 sessions, 56 days; T3, 4 weeks × 2 sessions, 56 days) on estimation of ground beetle assemblages in Naejangsan National Park, a temperate forest in Korea. Funnel type and larger pitfall traps collected higher numbers of individuals and species than other trap sizes. Species composition of ground beetles was different by size of traps (SB, MB, and PC vs. PJ, PT, and FT). In particular, ground beetle composition in larger traps (PJ, PT, and FT) appeared to be influenced by environmental characteristics according to localities (e.g., soil characters and dominant tree species). These findings from our study support that pitfall trapping of ground beetles can be influenced by trap sizes per se as well as sampling durations and environmental characteristics. Thus, biodiversity monitoring in temperate forests should be conducted with long sampling duration (at least 28 days) using large-sized traps (> 7.5 cm in diameter of trap mouthpart) considering expenses and study aims.

소다라임 유리가판상 SiO2/Nb2O5 다층박막 구조 변화에 따른 자외선 365nm 파장의 광학적 특성연구

정종국,안병하,최선아,박영웅,임실묵 한국표면공학회 2021 한국표면공학회 학술발표회 초록집 Vol.2021 No.12

자외선 365㎚파장에 고투과성 기능을 갖는 소다라임 포토마스크용 유리기판 제작

정종국,변나은,인장식,박진수 한국표면공학회 2020 한국표면공학회 학술발표회 초록집 Vol.2020 No.12

고온가스 처리용 세라믹 필터의 국산화 기술 개발 및 응용

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