• 환경생물
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• 제30권3호
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• pp.157-163
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• 2012

Oxidative stress has been reported to be one of causes of neuritis. This study examined antioxidative activities of methanol extracts of six amphibian species known to be medicinal animals (Rana catesbeiana, R. coreana, R. rugosa, R. dybowskii, R. nigromaculata, and Hyla japonica) and investigated their effects of inhibiting nitric oxide (NO) production and cytotoxicity on the murine macrophage RAW264.7 cells. As inflammation is closely associated with reactive oxygen species, assays on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, xanthine oxidase inhibitory activity, superoxide anion radical scavenging activity and NO scavenging activity of the extracts of the six species were performed to investigate their antioxidative activity. The results obtained were as follows; All extracts showed antioxidative activity, and the activity of R. dybowskii was the highest in comparison among those. Anti-inflammatory effects of the extracts were also examined, the five extracts except that of R. rugosa did not show cytotoxicity for RAW264.7 cells at the maximal concentration ($1,000{\mu}g\;mL^{-1}$). Selectivity index, meaning NO scavenging activity compared to cytotoxicity, showed the highest level in the extract of R. dybowskii. These results will be very useful basic data for future studies on prevention and treatment of human diseases to understand the biological roles of amphibian extracts throughout the antioxidative or anti-inflammatory pathways.

• 한국습지학회지
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• 제11권3호
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• pp.105-113
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• 2009

습지생태계는 자연에서 가장 생산성이 높은 지역중 하나이다. 습지는 육상생태 및 하천생태의 전이지대이다. 본 연구는 도심하천 중의 하나인 도림천의 생물상(조류, 포유류, 양서,파충류)에 대한 현장조사를 수행한 연구이다. 총 3목 6과 9종의 포유류가 관찰되었으며, 17과 30종의 조류, 3과 4종의 양서류가 2과 및 3종의 파충류가 관찰되었다. 도림천은 도심하천이지만 다양한 생물상이 조사되었으며, 본 기초연구는 향후 이 지역의 습지 및 하천생태복원과 종들이 번식하고 생존하는 비오톱 연구에 사용될 예정이다.

• 환경생물
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• 제30권4호
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• pp.287-306
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• 2012

지구적으로 양서류가 감소하고 있다. 오래전부터 중금속은 양서류 군집 감소의 원인 중 한가지로 지목받고 있다. 수정 후 변태에 이르는 생활사를 수중에서 진행하는 양서류는 수환경 내의 오염물질에 1차적으로 노출되며 독성효과에 대한 감수성이 높아 수환경의 오염에 특히 취약하다. 양서류는 수서생태계의 건강도 지표로서 유용할 뿐 아니라 분자 및 개체수준의 다양한 생체지표를 이용한 다양한 환경오염물질의 독성평가 모델로서도 유용하다. 양서류에서 얻어진 독성자료는 수환경 오염물질의 관리와 안전관리기준으로 사용될 수 있다. 본 논문에서는 기존에 보고된 중금속이 양서류의 다양한 독성종말점에 미치는 영향들에 대해 검토하고 분석하였다.

• 한국동물위생학회지
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• 제25권4호
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• pp.385-407
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• 2002

The planning of any experiment or trial involving the use of animal (material) requires the most detailed and careful consideration of the wide variety of species and strains that are now available. Unfortunately, although many research workers carefully define their requirements with respect to chemicals or complicated laboratory equipment, often they appear to be unaware of the specifications that should be similarly applied to laboratory animals and end up simply asking for a white mouse！ The aim of any user of laboratory animals should be to achieve maximum accuracy with the minimum number of animals, and it is, therefore, essential that careful consideration should be given to the choice of the animal(Bleby J, 1987). The first step when selecting an experimental animal is to specify the type needed, taking into account the following factors: 1. species, 2. breed or strain, and 3. quality, especially with respect to health and genetical status. The correct choice of species cannot be emphasized too strongly and failure to do so can sometimes have dire consequences, frequently very expensive in financial terms and sometimes extremely tragic in manifestations of human and animal suffering. In this paper, we reorganized a lot of collected articles described previously for common and scientific names of amphibians, domestic animals, birds, invertebrates, mammals, reptiles, and aquaculture as mentioned in the text.

• 한국습지학회지
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• 제16권2호
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• pp.193-204
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• 2014

동물의 분포는 서식지선택에 영향을 받으며, 서식지의 특성과 먹이자원은 종의 생존에 중요한 요인으로 작용한다. 본 연구는 천마산에 서식하는 쇠살모사(Gloydius ussuriensis)의 분포 패턴 특성을 파악하고자 고도, 서식지 특성, 잠재적 먹이자원인 양서류의 분포에 초점을 맞추어 수행되었다. 서식하는 고도범위에서 선호하는 서식지 타입을 알아보고자 고도를 3개의 범주(저고도, 중고도, 고고도)로 분류하였고, 서식지는 수생태계의 존재 유무에 따라 분류하였다. 쇠살모사의 경우, 고도와 서식지 타입에 따른 분포 모두 유의한 차이를 보였으며, 저고도와 물이 있는 계곡에서 주로 분포하였다. 양서류의 경우도 고도와 서식지에 따라 쇠살모사와 동일한 분포패턴을 보였다. 물이 있는 계곡의 쇠살모사와 양서류에 대한 미소서식지 분석결과는 유의한 차이가 없었다. 결과적으로 쇠살모사가 저고도에 위치한 물이 있는 계곡주변에서 대부분 분포하고 있었던 이유는 양서류의 분포가 그 원인으로 판단된다. 이러한 이유는 천마산에 서식하는 쇠살모사가 비교적 사냥하기 쉬운 먹이자원인 양서류를 선호했기 때문이라고 판단된다.

• 한국환경복원기술학회지
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• 제21권6호
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• pp.55-69
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• 2018

As disaster risk and climate change volatility increase, there are more efforts to adapt to disasters such as forest fires, floods, and landslides. Most of the research, however, is about influence of human activities on disaster and there is few research on disaster adaptation for species. Previous studies focusing on biodiversity in selecting conservation areas have not addressed threats of disaster in the habitats for species. The natural disasters sometimes play role of drivers of ecological successions in the long run, but they might cause serious problems for the conservation of vulnerable species which are endangered. The purpose of this study is to determine whether soil loss (SL) is effective in selecting habitat management areas for amphibians and reptiles. RUSLE model was used to calculate soil loss (SL) and the distribution of each species (SD) was computed with MaxEnt model to find out the biodiversity index. In order to select the habitat management area, we estimated the different results depending if value of soil loss was applied or not by using MARXAN, a conservation priority selection tool. With using MARXAN, conservation goals can be achieved according to the scenario objectives, and the study has been made to meet the minimum habitat area. Finally, the results are expressed in two; 1) the result of soil loss and biodiversity with MATRIX method and 2) the result of regional difference calculated with MARXAN conservation prioritization considering soil loss. The first result indicates that the area with high soil loss and low species diversity have lower conservation values and thus can be managed as natural disturbances. In the area where soil loss is high and species diversity is also high, it becomes where a disaster mitigation action should be taken for the species. According to the conservation priorities of the second result, higher effectiveness of conservation was obtained with fewer area when it considered SL in addition to SD, compared to when considered only biodiversity. When the SL was not taken into consideration, forest area with high distribution of species were important, but when SL considered, the agricultural area or downstream of the river were represented to be a major part of habitats. If more species data or disaster parameters other than soil loss are added as variables later, it could contribute as a reference material for decision-making to achieve various purposes.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1996년도 한국생물과학협회 국제학술대회
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• pp.143.2-143
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• 1996

No Abstract, See Full Text

• 한국동물학회:학술대회논문집
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• 한국동물학회 1996년도 한국생물과학협회 국제학술대회
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• pp.144.2-144
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• 1996

No Abstract, See Full Text

• 한국동물학회:학술대회논문집
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• 한국동물학회 1996년도 한국생물과학협회 국제학술대회
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• pp.143.1-143
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• 1996

No Abstract, See Full Text

• 한국독성학회:학술대회논문집
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• 한국독성학회 2003년도 추계학술대회
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• pp.121-121
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• 2003

Cricket (Gryllus bimacutus) is mass-bred in 6 cycles per one year in insect farms. They are used as dry or live foods for animals, tropical fish, reptile and amphibians. Therefore, it is necessary to study the genotoxicity of whole bodies of G. bimaculatus.(omitted)