• 제목/요약/키워드: One new species

검색결과 870건 처리시간 0.024초

부자류 및 Aconitine이 흰쥐 간 내 유전자발현에 미치는 영향 (Effects on Gene Expressions in the Rat Liver of Aconitine and Aconitum Species.)

  • 이정호;한상용;김현주;박혜정;김윤경
    • 대한본초학회지
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    • 제22권2호
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    • pp.1-12
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    • 2007
  • Objectives : Aconitine is one of the toxic components of aconitum species. This study was carried out to evaluate gene expressions of herbal prescriptions containg aconitum species and oriental medicinal plants of aconitum species. Methods : We have measured gene expressions in the liver of aconitine, Aconitum carmichaeli DEBX., Aconitum ciliare DC. Yong Ho Whan using Sprague-Dawley rat. Gene expression in rat liver has been analyzed using codelink 10k microarray. Results : 1. Genes up-regulated over than 4 fold were 118 and down-regulated less than 4 fold were 91 in aconitine 50 ${\mu}g/kg/day$ over control. 2. Genes up-regulated of over than 4 fold were 124 and down-regulated less than 4 fold were 98 in Aconitum ciliare DC. 4g/kg/day and 169 of over than 4 fold, and 110 of less than 4 fold for Aconitum carmichaeli DEBX. 4g/kg/day, respectively. 3. Regulated genes in treatment group of Aconitum carmichaeli DEBX, Aconitum ciliare DC. and aconitine was only 2 different genes, Sulfotransferase family 4A, member 1 and Lin-7 homolog b (C. elegans). Conclusions : Gene expression profiles in liver were different among aconitine, Aconitum carmichaeli DEBX., Aconitum ciliare DC. and herbal prescription YongHo-whan. Furthermore, we can find many new genes related with effects of aconitum species.

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외래종관리에 관한 국제동향 및 정책방향 (International Trends and Policy Recommendations Related to Non-Indigenous Species)

  • 박용하
    • 환경정책연구
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    • 제1권1호
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    • pp.25-45
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    • 2002
  • Opening of trade relationships through an increasing number of international free trade agreements and the now defunct General Agreement on Tariffs and Trade has resulted in an increase the number of the species being exchanged in the world. In the last 20 years, international environmental laws have multiplied and a number of treaties address harmful non-indigenous species (NIS) directly with specific provisions, while other treaties deal with related environmental issues and indirectly affect international regulation of NIS; however, such treaties are weak due to lack of enforceability. From the stand point of national law, many countries including the USA, Australia and New Zealand enforce national laws and regulations to protect biological resources. Typical strategies include : 1) strengthening quarantines to prevent unintentional and illegal introduction of harmful NIS, and 2) developing technologies for managing harmful NIS. However, the recent international trend for managing NIS has shifted. In 2002, the Bonn Guidelines on Access to Genetic Resources and Fair and Equitable Sharing of the Benefit Arising out of their Utilization was adopted at the 6th Conference of the Parties to the Convention on Biodiversity. One major issue highlighted in the document is that "there is no more free of charge to get a biological resource from other countries". The Bonn guidelines will affect international and national NIS regulatory systems because the NIS is a potentially disrupts ecosystems as well as native species. A number of impacts are expected including the revamping of national biodiversity policy regimes in many countries in the world. In particular, the ROK, which is not very biologically diverse, has to evolve national laws to protect valuable ecosystems from NIS. In the meanwhile, national rights of using beneficial indigenous and non-indigenous species as biological resources should be considered through the investigation and national registration of NIS around the world for the promotion of the biotech industry.

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A floristic study of Donggeom-do (Isl.), Ganghwa-gun, Korea

  • Kim, Sun-Yu;Lee, Byoung Yoon;Kim, Jung-Hyun
    • Journal of Species Research
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    • 제2권2호
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    • pp.203-222
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    • 2013
  • The district of Ganghwa-gun in the western coast (Seohae) of the Korea is consisted of several islands, Ganghwa-do, Seokmo-do, Gyodong-do, Jumun-do, Boreum-do, Seogeom-do and Donggeom-do. Since several islands of them were connected to mainland of Korea by bridges, the islands attract a lot of tourists from Seoul, Incheon and Gyeonggi-do areas. Construction of new roads, pensions, resort areas and restaurants provided economical benefits to local residents while natural vegetation of these islands has deteriorated continuously. Before biodiversity of vascular plants in these regions is damaged seriously by human impacts, it is needed to conserve original vegetation of the islands for restoration and monitoring in the future. Therefore, the primary purpose of the study is to clarify the flora of Donggeom-do, belonging to Ganghwa-gun. From the 15 times of field trips to the island, we have collected a number of vascular plants, 512 taxa in total, including 110 families, 329 genera, 449 species, six subspecies, 52 varieties, four forms and one hybrid. Of 512 taxa investigated, we have identified 12 taxa to be endemic to Korea. Six taxa were endangered or rare species which were designated by the Ministry of Environment and Korea Forest Service, respectively. 25 taxa were recognized as floristic regional indicator species designated specially by the Ministry of Environment. Seven species have shown their northern or southern distributional limit ranges, and 29 taxa were recognized as halophytes. The naturalized plants were identified as 55 taxa, and their naturalization ratio was 10.7%.

광주지방 논거미의 분포(I) (Distribution of Spiders on Paddy Fields in the Suburbs of Kwangju City)

  • 윤주경;남궁준
    • 한국응용곤충학회지
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    • 제18권3호
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    • pp.137-141
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    • 1979
  • 1975년 11월$\~$1977년 11월 사이에 광주지방의 논거미의 분포상과 계절적 밀도변동을 조사하여 다음과 같은 결과를 얻었다. 1. 광주산로 논거미로서 13과 24속 58종(7미확정종포함)을 확인하였으며 기중 한국산 논거미로 2종, 광주산 논거미로 22종을 추가하였다. 2. Cornicularia vulgaris OL(쌍코뿔 애접시거미)는 한국미기록종이었다. 3. 광주산 논거미의 우세과는 Erigonidae와 Lycosidae이며 특히 Erigonidae는 타지방에 비해 단연 우세하였다. 4. 우점종은 Gnathonarium dentatum(WIDER)가 $28.7\%$, Oedothorax insecticeps BOES. et STR.가 $28.3\%$로 월등한 우점현상을 나타냈다. 5. 기지 수원, 대구에서는 우세과 Lycosidae, 우점종 Pirate subpiraticus(BOES. et STR.)인데 비해 본지방에서 는 우세과 Erigonidae 우점종 Gnathonarium dentatum(WIDER)로 남북관계 내지 동서현상이 보였다. 6. 계절적 밀도 변동은 월동전인 11월이 최고이고, 월동후인 3,4월이 최저이며 7,8월이 중간 Peak인W자형 분포상을 나타낸다.

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강원도(江原道)에서 채집(採集)한 흰가루병균(病菌)과 기주식물(寄主植物) (Powdery Mildew Fungi and Their Host Plants from Kangwon Province)

  • 신현동
    • 한국균학회지
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    • 제22권3호
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    • pp.229-246
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    • 1994
  • 1989년부터 1993년까지 5년간 강원도지방에서 횐가루병균에 감염된 246종의 식물을 채집하였는데, 이는 강원도에서 알려진 피자식물 1,475종의 약 16.7%에 해당한다. 흰가루병균은 12속(屬) 83종(種)이 동정(同定)되었는데, Arthrocladiella 속이 1종, Blumeria 속이 1종, Cystotheca 속이 1종, Erysiphe 속이 25종, Leveillula 속이 1종, Microsphaera 속이 17종, Phyllactinia 속이 7종, Podosphaera 속이 3종, Sawadaia 속이 3종, Sphaerotheca 속이 9종, Uncinula 속이 10종, Uncinuliella 속이 2종 등 12속 80종이었으며, 무성세대명만 확인된 Oidium 속은 3종이었다. 각 기주식물은 대개 1종의 흰가루병균에 감염당하였으나, 물오리나무에서는 3종의 흰가루병균이 확인되었고, 갈참나무, 떡갈나무, 졸참나무, 뽕나무, 찔레꽃, 방가지똥 및 이고들빼기에서는 2종의 흰가루병균이 확인되었다. 한편 무궁화에서 채집된 흰가루병균은 지금까지 무궁화속 식물에서 알려진 5종의 흰가루병균과 다른 형태학적 특징을 나타내어 별도로 기재하였으며, 국화과(科)에 속하는 쇠서나물, 미역취, 큰방가지똥, 방가지똥, 그리고 이고들빼기에서 채집된 흰가루병균은 이들 식물에서 기보고된 몇몇 Oidium spp.와 비교하여 형태학적 특징을 검토하였다. 이 보고로 우리나라의 흰가루병 기주식물은 총 333종으로 늘어났으며, 총 피자식물의 약 11.4%에 해당된다.

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Merging the cryptic genera Radicilingua and Calonitophyllum (Delesseriaceae, Rhodophyta): molecular phylogeny and taxonomic revision

  • Wolf, Marion A.;Sciuto, Katia;Maggs, Christine A.;Petrocelli, Antonella;Cecere, Ester;Buosi, Alessandro;Sfriso, Adriano
    • ALGAE
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    • 제36권3호
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    • pp.165-174
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    • 2021
  • Radicilingua Papenfuss and Calonitophyllum Aregood are two small genera of the family Delesseriaceae that consist of only three and one taxonomically accepted species, respectively. The type species of these genera, Radicilingua thysanorhizans from England and Calonitophyllum medium from the Americas, are morphologically very similar, with the only recognized differences being vein size and procarp development. To date, only other two species were recognized inside the genus Radicilingua: R. adriatica and R. reptans. In this study, we analysed specimens of Radicilingua collected in the Adriatic and Ionian Sea (Mediterranean), including a syntype locality of R. adriatica (Trieste, northern Adriatic Sea), alongside material from near the type locality of R. thysanorhizans (Torpoint, Cornwall, UK). The sequences of the rbcL-5P gene fragment here produced represent the first molecular data available for the genus Radicilingua. Phylogenetic reconstruction showed that the specimens from the Adriatic and Ionian Seas were genetically distinct from the Atlantic R. thysanorhizans, even if morphologically overlapping with this species. A detailed morphological description of the Mediterranean specimens, together with an accurate literature search, suggested that they were distinct also from R. adriatica and R. reptans. For these reasons, a new species was here described to encompass the Mediterranean specimens investigated in this study: R. mediterranea Wolf, Sciuto & Sfriso. Moreover, in the rbcL-5P tree, sequences of the genera Radicilingua and Calonitophyllum grouped in a well-supported clade, distinct from the other genera of the subfamily Nitophylloideae, leading us to propose that Calonitophyllum medium should be transferred to Radicilingua.

HLA 모의구조전환에 따른 한국군 DM&S 발전방안 (Current Issues for ROK Defense Modeling & Simulation Scheme under the Transition of New HLA Simulation Architecture)

  • 이상헌
    • 한국국방경영분석학회지
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    • 제26권2호
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    • pp.101-119
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    • 2000
  • US DoD designated the High LEvel Architecture (HLA) as the standard technical architecture for all military simulation since 1996. HLA will supercede the current Distributed Interactive Simulation(DIS) and Aggregated LEvel Simulation Protocol(ALSP) methods by no funds for developing/modifying non-HLA compliant simulations. The new architecture specifies Rules which define relationships among federation components, an Objects Model Template which species the form which simulation elements are described, and an Interface Specification which describes the way simulations interact during operations. HLA is named as standard architecture in NATO, Australia and many other militaries. Also, it will be IEEE standard in the near future. It goes without saying that ROK military whose simulation models are almost from US must be prepared in areas such as ROK-US combined exercise, training, weapon system acquisition, interface models with C4I system, OPLAN analysis, operations, and os on. In this paper, we propose several effective alternatives and issues for ROK Defense Modeling and Simulation under the transition of new HLA architecture. Those include secure the kernel of new simulation technology and develop our own conceptual model, RTI software, prototype federation for each service and aggregated one. In order to challenge the new simulation architecture effectively, we should innovate our current defense modeling and simulation infrastructure such s manpower, organization, budget, research environment, relationships among academia and industry, and many others.

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중부산악 DMZ 민통선이북지역의 담수어류 출현양상 (Appearance Patterns of Freshwater Fish in Central Mountain Area of DMZ, Korea)

  • 명라연;서형수;고명훈
    • 한국환경생태학회지
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    • 제34권6호
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    • pp.530-542
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    • 2020
  • 중부산악 DMZ 민통선이북지역의 담수어류 출현양상을 밝히기 위해 2018년 5월부터 10월까지 조사를 실시하였다. 조사기간동안 24개 지점에서 족대와 투망으로 12과 43종 7,744개체를 채집하였고, 우점종은 참갈겨니(30.3%), 아우점종은 피라미(18.5%)였으며, 그 다음으로 버들치(10.0%), 버들개(6.7%), 돌마자(5.9%), 묵납자루(4.5%), 돌고기(4.2%), 대륙종개(2.6%), 등의 순으로 우세하게 출현하였다. 출현종 중 법정보호종은 천연기념물 어름치 1종, 환경부지정 멸종위기야생생물 II급의 다묵장어, 묵납자루, 가는돌고기 3종 등 모두 4종이, 한국고유종은 20종(46.5%)이 채집되었다. 또한 기후변화민감종(냉수성어류)은 금강모치와 새미, 둑중개 3종이, 육봉형 어류는 다묵장어와 둑중개와 밀어 3종이, 외래종은 배스 1종이 출현하였다. 지점별 우점종은 참갈겨니(15개 지점), 피라미와 버들치(4개), 둑중개(1개)였으며, 우점도는 상류부에서 하류부(김화남 대천 본류)로 갈수록 낮아지고, 반대로 다양도와 종풍부도는 상류부에서 하류부로 갈수록 높아졌다. 군집구조는 크게 최상류, 상류, 한강, 임진강으로 구분되었다. 선행조사와 비교한 결과, 본 조사에서 가장 많은 종(43종)이 채집되었고, 새로 채집된 어류는 2종(참중고기, 배스), 채집되지 않은 종은 6종(쏘가리, 대농갱이, 열목어, 흰줄납줄개, 왜매치, 왜몰개)이었다. 김화남대천은 법정보호종(4종)을 비롯한 많은 종이 서식하고 다양도와 풍부도지수가 높아 생물학적 가치가 높았고, 끝으로 이 지역의 보전방안에 대해 논의하였다.

국내 침입외래식물 사막갓(Brassica tournefortii; Brassicaceae)의 보고 및 잠재 분포 예측 (New record and prediction of the potential distribution of the invasive alien species Brassica tournefortii (Brassicaceae) in Korea)

  • 강은수;김한결;남명자;최미정;손동찬
    • 식물분류학회지
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    • 제52권3호
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    • pp.184-195
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    • 2022
  • 침입외래식물인 Brassica tournefortii Gouan이 전북 군산시, 고창군, 제주도 제주시에서 발견되었다. 본 종은 식물체 기부에 강모가 밀생하고, 줄기가 기부와 말단에서 분지하며, 열매는 성숙시 일부분만 열개되고, 종자는 수분이 있을 때 점성이 띠는 특징으로 배추속의 갓, 유채와 쉽게 구분된다. 일부 학자들은 B. tournefortii의 열매와 종자의 특징으로 Coincya Rouy 속에 속하는 분류군으로 취급하기도 하나, 열매의 과피편 표면에 한개의 맥이 있는 특징과, ITS 구간 염기서열의 maximum-likelihood 분석 결과에 따라 배추속 식물로 분류하였다. 본 연구에서 B. tournefortii의 분포지, 화상자료 및 기재문을 제시하였으며, 또한 본 종의 잠재분포변화가 기후 시나리오에 의해 예측되었다. 예측 결과, B. tournefortii의 국내 확산 가능성은 낮은 것으로 나타났지만, 정확한 판단을 하기 위해서는 지속적인 모니터링이 필요할 것으로 판단된다. 본 연구의 결과들은 B. tournefortii의 위험성 평가 및 효과적인 관리방안을 제시하기 위한 자료로 활용될 수 있을 것이다.

한국 야생에서 발견된 비단거북(Chrysemys spp.) 3종의 관찰 사례 보고 (The Case Report on the Three Species of Painted Turtles(Chrysemys spp.) in the Wild of South Korea)

  • 박승민;이세형;함충호;최재혁;천승주;박혜린;나한웅;박경희;김정훈;;성하철
    • 통합자연과학논문집
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    • 제16권4호
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    • pp.103-110
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    • 2023
  • Invasive species are organisms that are introduced into places outside of their natural distribution range. The global pet trade is facilitating the introduction of invasive species into new countries and areas. Among the introduced alien species, turtles are one of the most common animal groups whether lives in wetland ecosystems, such as wetlands or reservoirs. Like other countries around the world, exotic turtles is becoming a growing concern for the wetland ecosystem in South Korea. In this study, we report new reports of subspecies of Painted turtle (Chrysemysspp.): Chrysemys picta marginata, C. p. bellii and C. dorsalis, from the reservoirs in downtown Cheongju and Gwangju, South Korea. We used morphological features, such as the characteristics of the legs, plastron, and carapace, to identify the turtles. It is assumed that all turtles were artificially released into nature. Considering the increasing number of reports on the introduction of alien invasive turtles in Korean wetlands, we recommend the formulation of an immediate and systematic management plan for pet trades and organized continuous monitoring programs.