• Title/Summary/Keyword: amphibian

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Herpetofauna in Soraksan National Park (설악산 국립공원의 양서. 파충류상)

  • 박병상
    • Korean Journal of Environment and Ecology
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    • v.10 no.2
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    • pp.184-190
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    • 1997
  • Herpetofauna in Soraksan National Park was carried out both Apr. 27, Apr. 28, 1996 and Aug. 19, Aug. 20, 1996. 6 stecies of 4 Families in Amphibian and 2 species of 2 Families in Reptilian were observed in this survey. It was observed relatively poor biota to other National Park that caused to excessive visitor and impacts by divelopments. Onychodactylus fischeri which was revealed Specific Endangered Animal assigned by Minister of Environmemt distributed abundantly along the Chohangnyong. So Chohangnyong should be conserved by prolonging the Year of Natural Rest.

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Effect of Endocrine Disrupting Chemicals on Bombina orientalis Aromatase Activity Expressed in Cultured Mammalian Cells

  • Yang, Won-Seok;Han, Xiang-Zi;Lee, Kyoung-Soon;Lee, Kyung-Min;Ju, Ji-Hyun;Shin, In-Cheol
    • Korean Journal of Environmental Biology
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    • v.29 no.1
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    • pp.74-80
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    • 2011
  • In this study we present a mammalian cell culture model that allows to study the effect of endocrine disruptors (EDCs) on aromatase activity of aquatic amphibian, Bombina orientalis. Bombina orientalis aromatase gene was subcloned into a mammalian expression vector and subsequently transfected to mammalian cells. Although the protein expression level of Bombina orientalis aromatase was low, it had a significant aromatase activity. When EDCs were added to aromatase transfected cells, aromatase activity was significantly decreased. We report here that this system may be used to monitor the effect of EDCs on aromatase activity of aquatic organisms.

Detection of Infectious Fungal Diseases of Frogs Inhabiting in Korea

  • Kim, Suk;Eom, Ahn-Heum;Park, Dae-Sik;Ra, Nam-Yong
    • Mycobiology
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    • v.36 no.1
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    • pp.10-12
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    • 2008
  • In recent years, there has been a rapid decrease in amphibian populations worldwide, and infectious diseases have been associated with this decline. Diseased frogs inhabiting Korea were collected from fields, and the diseases were identified by morphological and molecular analyses. Two fungal diseases-saprolegniasis and chromomycosis-were detected in the frogs. Saprolegniasis caused by Saprolegnia spp. was found in Rana plancyi chosenica from Gangwon-do and Rana huanrenensis from Chungbuk. Chromomycosis, which is caused by infection with Cladosporium cladosporioides, was detected in Rana catesbeiana from Busan.

Future Opportunities for life Science Programs in Space

  • Hiroki Yokota;Sun, Hui-Bin;George M. Malacinski
    • Animal cells and systems
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    • v.4 no.3
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    • pp.239-243
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    • 2000
  • Most space-related life science programs are expensive and time-consuming, requiring international cooperation and resources with trans-disciplinary expertise. A comprehensive future program in "life sciences in space" needs, therefore, well-defined research goals and strategies as well as a sound ground-based program. The first half of this review will describe four key aspects such as the environment in space, previous accomplishments in space (primarily focusing on amphibian embryogenesis), available resources, and recent advances in bioinformatics and biotechnology, whose clear understanding is imperative for defining future directions. The second half of this review will focus on a broad range of interdisciplinary research opportunities currently supported by the National Aeronautics and Space Administration (NASA), National Institute of Health (NIH), and National Science Foundation (NSF). By listing numerous research topics such as alterations in a diffusion-limited metabolic process, bone loss and skeletal) muscle weakness of astronauts, behavioral and cognitive ability in space, life in extreme environment, etc., we will attempt to suggest future opportunities.

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PCR Detection of Ranavirus in Gold-spotted Pond Frogs (Rana plancyi chosenica) from Korea

  • Kim, Suk;Sim, Mi-Yeong;Eom, Ahn-Heum;Park, Dae-Sik;Ra, Nam-Yong
    • Korean Journal of Environmental Biology
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    • v.27 no.1
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    • pp.110-113
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    • 2009
  • In recent years, there has been a rapid global decline in amphibian populations, and infectious diseases have been associated with this decline. Diseased Gold-spotted pond frogs (Rana plancyi chosenica) were collected from a frog farm in Korea and identified using morphological and molecular analysis to identify the disease. The typical symptoms of ranaviral infection were observed in the tadpoles and adults frogs. The nucleotide sequence analysis revealed that the sequences showed the closest similarity with sequences to Frog virus 3, which belongs to the genus Ranavirus.