• 한국응용곤충학회지
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• 제32권1호
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• pp.101-104
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• 1993

호도나무의 식엽성해충인 벼슬집명나방(Locastra muscosalis Walker)의 기생식물 종류, 생활사 및 천적의 종류를 충북지방을 중심으로 조사하였다. 기생식물로 혹호도나무, 폐칸, 중국 굴피나무, 가래나무가 추가조사되었다. 벼슬집명나방은 연 1회 발생하였으며 성충 우화시기는 6월 하순부터 7월 하순까지였고 최성기는 7월 10일경이었다. 산란수는 560개 정도로서 기주식물 잎표면에 무더기로 산란하였음 란기간은 7~12일로 란기의 시기에 따라 차이가 있었다. 유충은 7월 중순경부터 잎을 거미줄로 묶고 군서하면서 잎을 식해하고 9월 중순부터 땅으로 내려와 토양 속 1cm 정도에 고치를 만들고 유충태로 월동하였으며 6월 중순경부터 용화하기 시작하였고 용기간은 평균 16일이엉ㅆ다. 또한 천경으로 기생성 3종, 포식성 6종및 병원미생물이 조사되었다.

• Journal of Ecology and Environment
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• 제44권3호
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• pp.155-161
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• 2020

Glossy Ibis (Plegadis falcinellus), which has never been recorded in South Korea, appeared on Jeju Island in 2018 and re-emerged in the inland area of Seocheon-gun (South Chungcheong Province) and in Goyang-si (Gyeonggi Province) in the following year. This study aims to report the progress in observing P. falcinellus in the inland areas of South Korea in 2019 and to predict its origin region and future propensity for habitats in the country through literature review. On 5 May 2019, an individual of P. falcinellus with breeding feathers was observed in a farmland in Wolsan-ri, Seocheon-gun. Twelve days later, another one was identified in a farmland in Janghang-dong, Goyang-si, about 173 km north of Wolsan-ri. The observed birds fed and rested in the area and stayed for only a day. The individual birds spotted in South Korea in 2019 are conjectured to have come from either Southeast Asia or Australia, among areas located in East Asian-Australasian Flyway (EAAF). This is because P. falcinellus, a species with excellent dispersal capacity, forms a population in new areas during extreme environmental changes in their current habitats, especially droughts. For 2 years, P. falcinellus was observed to be migrating in spring; however, in the future, they may exhibit the same propensity for breeding and habitats as that of birds migrating in autumn. As it is a conspicuous species, effective detection of their arrival requires a survey system that classifies the country by habitat type and involves periodic and multiple observations by experts and citizens.

• 한국생물정보학회:학술대회논문집
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• 한국생물정보시스템생물학회 2003년도 제2차 연례학술대회 발표논문집
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• pp.183-192
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• 2003

With the availability of complete whole-genomes such as the human, mouse, fugu and chimpanzee chromosome 22, comparative analysis of large genomes from cross-species at varying evolutionary distances is considered one of a powerful approach for identifying coding and functional non-coding sequences. Here we describe a fast and efficient global alignment method especially for large genomic regions over mega bases pair. We used an approach for identifying all similarity regions by HSP (Highest Segment Pair) regions using local alignments and then large syntenic genome based on the both extension of anchors at HSP regions in two species and global conservation map. Using this alignment approach, we examined rearrangement loci in human chromosome 21 and chimpanzee chromosome 22. Finally, we extracted syntenic genome 30 Mb of human chromosome 21 with chimpanzee chromosome 22, and then identified genomic rearrangements (deletions and insertions ranging h size from 0.3 to 200 kb). Our experiment shows that all jnsertion/deletion (indel) events in excess of 300 bp within chimpanzee chromosome 22 and human chromosome 21 alignments in order to identify new insertions that had occurred over the last 7 million years of evolution. Finally we also discussed evolutionary features throughout comparative analyses of Ka/ks (non-synonymous / synonymous substitutions) rate in orthologous 119 genes of chromosome 21 and 53 genes of MHC-I class in human and chimpanzee genome.

• Fisheries and Aquatic Sciences
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• 제21권5호
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• pp.11.1-11.8
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• 2018

Interspecific hybridization experiments were conducted between the common seahorse Hippocampus kuda (male) and the slender seahorse H. reidi (female) during artificial rearing to develop a new aquarium fish with unique polyandrous mating. Molecular analysis via mitochondrial DNA (mtDNA) cytochrome b and nuclear DNA (ncDNA) ribosomal protein S7 gene supported the hybridization between the two species, and the hybrid also showed morphological characteristics of both species. Juveniles of H. kuda have dense melanophores on the whole body or only on the trunk and tail, whereas juveniles of H. reidi have thin melanophores on the whole body or present in stripes only along their prominent trunk and tail rings. However, all the hybrid juveniles had dense melanophores only on the tail, with the striped trunk rings, thus showing an intermediate pattern, and these patterns were limited to the fairly early stage of development (1-10 days old). In contrast, the two eye spines in the hybrid were apparent after 9 days old, which were not inherited from H. kuda (one eye spine), but from H. reidi (two eye spines). According to LOESS (local regression) analysis, the growth rate increased between 20 and 25 days, and the hybrids grew faster than H. kuda when they entered the explosive second phase of growth between 25 and 45 days for all the seahorses. This study highlights the hybridization between H. kuda and H. reidi may contribute to the improved taxonomic information of young seahorses.

• 약학회지
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• 제48권6호
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• pp.323-327
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• 2004

Whitening effect, which decreases the skin pigmentation, is the one of important targets in cosmetics. This study was investigated the effects of Scirpi rhizoma on ant ioxidation and melanogenesis. S.rhizoma is a rhizome of Scirpus fluviatilis G. a perennial Cyperaceae species of wide occurrence in Asia, Europe, Africa and North America. S.rhizoma shown scavenging activities of free radicals and reactive oxygen species (ROS) with the IC50 of 638${\mu}g/ml$ against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and 21.7${\mu}g/ml$ against superoxide radicals in the xanthine/xanthine oxidase system, respectively. S.rhizoma treatment (48 h) suppressed the biosynthesis of melanin up to 27% and reduced tyrosinase activity up to 31% at 100${\mu}g/ml$ in B16 melanoma cells. S.rhizoma was also able to significantly inhibit tyrosinase and TRP-1 expres- sion in protein level. These results suggest that S.rhizoma inhibited melanin biosynthesis by regulating tyrosinase activity and expression in B16 melanoma cells. Therefore S.rhizoma may be useful as new whitening agent due to the antioxidant effect and the inhibitory effect against melanogenesis.

• Journal of Forest and Environmental Science
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• 제22권1호
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• pp.83-100
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• 2006

Antibiotics which produced by mushrooms discovered for last 40 years were described. Any antibiotic has not been used as infectious disease remudy but will be used as physiological active substance in near future. The antibiotic of mushrooms have not been published much in papers and do not have various finds of structures, compared to those of Streptomyces. Triple bond having compounds, terpenoid compounds aromatic compounds and some other compound have been known. These compounds are not dissolved well in water and mainly fat-soluble, except for cordycepin. Also, they are generally neutral, and some of them are acidic and almost none of them are basic compounds. However, acetylene and terpenoid compounds are the characteristic compounds of mushroom, and are not found in other microorganisms and plants. Especially, there are various terpenoid compounds in mushrooms. These metabolites of mushrooms were not used as antibiotic, but are interested as physiological active substance, such as enzyme inhibitor and immunomodulator. To promote studying on the antibiotics of mushroom, new screening methods must be developed, because strain belonged to the different genus produces different antibiotics, even though mushrooms belonged to the same genus and species. It is also known that mushrooms collected in different areas produce different antibiotics. Now, it is difficult to separate each pure compound from mushroom. It is important to find mushrooms which is impossible to cultivate artificially, or grow in the back land where is difficult to collect. Thousands of mushrooms grow on earth now, so that which species will be screened if not known. The biochemical and mycological study for usability of the metabolites of mushrooms is thought, as one of the important research areas, must be performed.

• 한국어류학회지
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• 제24권2호
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• pp.143-146
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• 2012

납작금눈돔과에 속하는 Aulotrachichthys prosthemius 1개체(표준 체장 74.8 mm)가 제주도 주변 해역에서 처음으로 채집되었다. 이 종은 등지느러미 기조수 V, 13, 뒷지느러미 기조수 III, 9, 아가미 뚜껑 위쪽에 날카로운 가시를 갖고 있으며 배쪽 줄은 뒷지느러미 끝을 도달하는 점에서 A. prosthemius로 확인되었다. 이 미기록종의 속명과 국명은 "은줄금눈돔속", "은줄금눈돔"으로 각각 제안하였다.

• 한국어류학회지
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• 제29권4호
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• pp.277-281
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• 2017

복어목 쥐치과에 속하는 Thamnaconus tessellatus 1개체(표준 체장 273.1 mm)가 제주도 서쪽 해역에서 외끌이중형저인망으로 어획되어 부산공동어시장에서 2015년 5월 30일에 채집되었다. 이 개체는 두부와 몸 모두 암갈색 점이 밀집하여 분포하고 꼬리지느러미 말단이 검지 않으며, 등지느러미 첫 번째 극조가 눈 중앙의 뒤쪽에서 시작하고 등지느러미 연조가 34~37개인 것이 특징이다. 우리나라에서 처음 보고되는 이 쥐치류의 국명으로 Yamada et al.(1995)에 따라 "남별쥐치"를 제안한다.

• 수산해양교육연구
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• 제28권3호
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• pp.746-759
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• 2016

In this study, we monitored the status of marine environment of olive flounder, Paralichythys olivaceus, culture ground in Jeju-do, Republic of Korea. It reported the consumption of raw olive flounder meat containing of Kudoa, Kudoa septempunctata, could induce vomitting and diarrhea in Japan. The Kudoa is a new mycosporean species, researchers found Kudoa from the muscles of olive flounder cultured at western Japan and imported from Jeju-do. We choose two Kudoa positive farms and two negative farms in the mid of concern about the relation between Kudoa and habitat. We found two marine invasive species at the water-pumping seabed at one of the Kudoa positive farm. The concentration of pH and DO at on-growing flounder farms showed the decreasing pattern along side the raceway (influent sea waters > on growing sea waters > outfluent sea waters). The TN and TP values increased gradually following to the raceway (influent sea waters < on growing sea waters < outfluent sea waters). The concentration of COD and SS were in the range of $0.100-2.581mg{\cdot}L^{-1}$, $1.00-12.70mg{\cdot}L^{-1}$, respectively. The calculated residence time was 4hr 32minutes at F1, 11hr 21minutes at F2, and 9hr 50minutes at F3, respectively. It was calculated same distance of 4 km away from effluent pipes. Although direct relation between Kudoa and marine environment could not define well based on this study result, the more studies on marine environmental stressors for olive flounder are required to conduct as a reliable method including socio-economic group and environmental group.

• 한국환경복원기술학회지
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• 제18권1호
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• pp.1-12
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• 2015

Beginning of the human ecology in 1920s, the efforts for applying the environmental values to a policy have been embodied by the enactments of international agreement and relevant laws. The government has been struggling to adopt the environmental values for the policy by enacting the relevant laws and establishing the environmental value evaluation information (environmental conservation value assessment map, eco-natural map, biotope map). In spite of the efforts to apply the environmental value assessment information for the habitat potential of wildlife, the application is being challenged by the discrepancy in methods and criteria. Thus this study intends to measure the potential of wildlife habitat and apply it to the spatial value classification for the application plan of wildlife habitat potential in policy. Maxent was used for the habitat potential and the land types were classified depending on the surface and land use pattern of cadastral map. As a result, the policy matrix including conservation strategy(CS), restoration strategy(RS), practical use strategy(PS) and development strategy(DS) has been deduced as CS $13.05km^2$(2.38%), RS $1.64km^2$(0.30%), PS $162.42km^2$(29.57%) and DS $8.56km^2$(1.56%). CS was emerged mostly on forest valleys and farmlands, and RS was appeared in the road area near the conservation strategy areas. Boryung downtown and Daecheon Beach were the center of DS, while the forest and farmlands were presented as PS. It is significant that this study suggest the new approaching method by comparing the wildlife habitat potential with the land type. Since this study evaluated the environmental value by one species of leopard cat (Prionailurusbengalensis) with Maxent model, it is necessary to apply the habitat potential measuring method for various target species as further research.