• Journal of Wetlands Research
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• 제16권2호
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• pp.193-204
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• 2014

The distribution of animals is affected by habitat selection, and habitat type and prey resource are important factors affecting their survival. This study was conducted to investigate the distribution pattern of the Red-tongue viper snake (Gloydius ussuriensis) with respect to altitude, habitat type and distribution of potential prey resource in Cheon-ma mountain, Korea. The study area of Cheon-ma mountain was separated into three altitude categories (low, middle, and high altitude) and the habitat types were categorized according to presence or absence of aquatic ecosystem and the preferred habitat in relation to altitude was determined. The distribution pattern of Red-tongue viper snakes was significantly different according to altitude and habitat type: they were mainly distributed at low altitude and in the water valleys. The distribution pattern of the Red-tongue viper snake correlated with that of amphibians. The analyses of microhabitat use of the Red-tongue viper snake and amphibians showed that their microhabitat types were not different significantly in water valleys. In conclusion, Red-tongue viper snakes were mainly distributed in the water valleys at low altitude and this is because amphibians are important as potential prey of the Red-tongue viper snake in Cheon-ma mountain.

• The Korean Journal of Zoology
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• 제21권1호
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• pp.29-39
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• 1978

The authors observed the ultrastructure of the mucous glandular epithelial cells in the amphibian skin by mean of electron microscope. The specimens from the experimental animals were fixed in 2.5% glutaraldehyde-oaraformaldehyde fixative in phosphate buffer at pH 7.2 prior to fixation in 1% osmium tetroxide, dehydrated in graded ethanol and acetone, embedded in Epon 812 mixture, and sectioned with Sorvall MT-2 ultramicrotome. The ultrasections were contrasted with uranyl acetate and lead citrate and observed with a JEOL-100B electron microscope. The results were as follows: 1. The cutaneous mucous glands in amphibia consisted of the glandular epithelial and the myoepithelial cells. 2. Several different cells in ultrastructure were observed in the mucous glandular epithelium of the adult amphibian skin. a. The dark and the light cells were observed in Hynobius leechi. b. The mitochondria-rich and the round secretory granule-containing cells were observed in Bombina orientalis. c. The round secretory granule-containing and the foam-like granule mass-containing cells were observed in Kaloula tornieri. d. The cutaneous mucous gland of Rana nigromaculata were divided into two types: A and B-type glands. In the A-type mucous gland, the mitochondria-rich and the round secretory granule-containing cells and in the B-type mucous gland, the mitochondria-rich, the secretory granule-containing and the ER-rich cells were observed. 3. Based upon the above findings, the authors infer that the mucous granular epithelium of the amphibian skin consists of the mitochondria-rich undifferentiated, the secetory granule-containing and mature, and the ER-rich evacuated cells.

• Analytical Science and Technology
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• 제15권6호
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• pp.489-495
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• 2002

In this study, we determined distribution status of organonitrogen pesticides such as trifluralin, atrazine, metribuzin, alachlor, malathion, nitrofen, permethrin, cypermethrin, fenvalerate, and parathion accumulated in the fresh water fishes and amphibians. We collected those samples at 31 sites from the basin of major rivers, and separated the muscular tissue as a final sample for analysis. In the pretreatment process, lipid was eliminated by using acetonitrile and n-hexane, and pesticides were reextracted with dichloromethane. The extract was dehydrated and concentrated, and then cleaned it up by passing the Florisil column, and pesticide content was finally determined by using a GC-MS system after introducing isotope labelled references. The accumulation level was observed in the range of $0.17{\sim}6.8{\mu}g/kg$ in amphibians and $0.26{\sim}16{\mu}g/kg$ in fishes including cypermethrin as $16{\mu}g/kg$.

• Korean Journal of Ecology and Environment
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• 제52권4호
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• pp.358-365
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• 2019

We measured the body composition, including bone mineral density (BMD) and food resource availability using dual energy X-ray absorptiometry and the carbon and nitrogen stable isotope ratios of body condition of 4 anuran species(Hyla japonica, Glandirana rugosa, Pelophylax nigromaculatus, Lithobates catesbeianus) in South Korea. Additionally, the carbon and nitrogen stable isotope ratios were employed to determine the food resource availability of anurans. We figured out the relationship between the body composition, including BMDs and food resource availability. The body composition and BMDs did not differ between male and female while there was difference among the species. Food resource availability and BMDs were the highest in L. catesbeianus, the lowest in H. japonica. BMDs tended to increase with higher food resource availability. Body composition and BMDs, which represent the body condition of an individual, can be used as an ecological indicator to assess the stability of the habitat of anurans.

• Parasites, Hosts and Diseases
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• 제33권2호
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• pp.75-84
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• 1995

Two species of the family Gorgoderidae (Trematode: Digenea) . Gorgonerc japonica Yamaguti, 1936 and Gorgoderinc bombince Yu & Lee, 1983 were collected from the urinary bladder of frogs captured from various localities in Korea. The morphology of each species is described and illustrated. Gorgodera japonica differs from G. cygnoides by having deeply branched vitellaria. Gorgodera bombince is considered a valid species.

• Proceedings of the Korean Society of Applied Pharmacology
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• 한국응용약물학회 1994년도 춘계학술대회 and 제3회 신약개발 연구발표회
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• pp.326-326
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• 1994

중금속이 양서류의 발생에 미치는 영향을 알아보기 위해 Xenopus embryo 2 할구기부터 카드뮴, 수은, 납. 구리, 아연 등을 여러 농도로 지속적으로 처리한 후 치사율과 이상 발생율을 조사하였다 그 결과 수은, 카드뮴. 구리, 납. 아연의 순으로 독성이 강함을 알 수 있다. 중금속 중 카드뮴 처리시 나타나는 현상으로는 창자, 눈, 체축. 지느러미, 십장 등의 이상과 수포 등을 들 수 있다. FETAX (frog Embryo Teratogenesis Assay : Xenopus)의 분석 결과 LC$_{100}$ 은 1.5 ppm, EC$_{100}$은 1PPm 이었고 기형 유발지수(TI)가 2. 8 인 점으로 보아 카드뮴을 Xenopus embryo에 있어서 기형유발원으로 분류할 수 있다.

• Korean Journal of Environmental Biology
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• 제19권4호
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• pp.278-281
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• 2001

Ecological measurement and biological environment of the Moak Provicial Park surveyed based on the habitat; deciduous broad leaved forest (Quercus mongolica variabilis-Pinus densiflora, Capinus tschonoskii, Quercus Mongolica, Quercus acutissima-Pinus densiflora, and Quercus variabilis), coniferous forest (Pinus densiflora), plantation forest (Pinus rigida), and the other place (pond, lake, rice field, stream, and river). Totally, 1 orders, 4 families, 8 species of amphibians were found at Mt. Moak provincial park. Biodiversity indices of studied region were as follow; richness was 1.270, diversity was 1.775, and evenness was 0.853 in amphibians. 42.1% of amphibians were found in deciduous broad leaved forest, 11.3% in coniferous forest, 1.6% in plantation forest, and 45.0% in the other region.

• Korean Journal of Environment and Ecology
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• 제12권4호
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• pp.381-388
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• 1999

Herpetofauna of Kojedo was surveyed in both May 3, 1998~May 5, 1998 and Nov. 7, 1998~Nov. 8, 1998. 9 species of 6 families in Amphibia and 9 species of 3 families in Reptile were observed by survey and heard the evidence in this study. It was observed relatively rich biota to the Kayasan, Sokrisan, Soraksan and Chirisan National Park in Korea. There were Specific Endangered Animal assigned by Minister of Environment such as Hynobius leechii, Bufo bufo gargarizans, Rana dybowskii, Elaphe rufodorsata, Zamenis spinalis, Dinodon rufo-zonatum rufozonatum, Agkistrodon blomhoffii bevicaudus and Agkistrodon saxatilis. Especially Rana catesbeiana which was originated from North America was very abundantly distributed at one pond. So Rana catesbeiana should be controlled for stable environmental condition of endemic Amphibia distribution.

• Landscaping Tree
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• 통권94호
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• pp.35-40
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• 2006

• Journal of the Speleological Society of Korea
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• 제5권6호
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• pp.20-22
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• 1980

동굴 속이라는 특수환경 속에 사는 동물을 우리는 동물생물(Gavernicole)이라 부르며, 이 동굴생물은 i)외래성(trogloxene) : 개구리(Amphibia) 따위의 양서류와 파리(Piptera) 등. ii) 호동굴성(troglophile) : 푸라나니아(Tricladia), 거미류(Araneido) 박쥐(Chirptera) 등. iii) 진동굴성(troglobiont): 새우류(Amphipoda), 톡톡이(Collembala), 좀류(Thysanura), 노래기(Aiplopada) 등. 3가지로 분류하고 있다.(중략)