• Title, Summary, Keyword: 양서류

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Effects of Heavy Metals on Amphibian Embryos, Tadpoles, and Adults (중금속이 양서류 배아, 유생 및 성체에 미치는 영향에 관한 소고)

  • Park, Chan Jin;Ahn, Hyo Min;Gye, Myung Chan
    • Korean Journal of Environmental Biology
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    • v.30 no.4
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    • pp.287-306
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    • 2012
  • Amphibian population declines globally. Environmental contamination by heavy metals has been suspected to the one of the reason for distinction of amphibian which has obligate aquatic life style during larval period. Amphibians have been widely accepted as animal model for the study of endocrine disruption in aquatic ecosystem at molecular as well as individual levels. There are increasing need for toxicological data in amphibians at multiple endpoints for management of contamination and development of safety guidelines. Here, we reviewed toxicological information about toxicity of heavy metals (arsenic, cadmium, chromium, copper, lead, mercury, nickel, zinc) on various end-point of amphibian.

Amphibian Fauna in the Mt. Myungji (명지산 일대의 양서류)

  • 계명찬
    • Korean Journal of Environmental Biology
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    • v.21 no.2
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    • pp.203-207
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    • 2003
  • Amphibian biodiversity, community structure and habitats were surveyed in the Mt. Myungji area from April 2002 to March 2003. During the survey period 2orders, 4 families, 7 species of amphibians were observed. Bombina orientalis (DI =45.1%) was dominant and Bufo stejnegeri (DI = 12.8%), Rana rugosa and Rana dybowskii (DI = 9.9% each) Rana nigromaculata and Rana huanrenensis (DI 1.4% each), and Onycodactylus fisheri (DI = 7.0%) followed. Frequency of occurrence of O. fisheri and B. stejnegeri was largely different according to the altitude and human residence in their habitats.R. nigromaculata and R. huanrenensis showed low frequency of occurrence (<10%) suggesting the decrease in habitation density in this area. The species richness (R'), general diversity (H'), and evenness (E') of amphibians in this area were 0.98, 2.12, and 0.76, respectively, suggesting relatively healthy condition of amphibian community in this area.

A Histological Study of Skin on Some Amphibia Inhabitated Chiri Mt. and Moodeung Mt. (지리산과 무등산에 서식하는 한국산 양서류의 피부에 관한 연구)

  • 이승휘;권은호;신영희
    • Korean Journal of Environment and Ecology
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    • v.18 no.2
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    • pp.205-209
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    • 2004
  • For the purpose of this study was accumulating histological data of skin some amphibia near Chiri Mt. and Moodeung Mt. Analyzed Anura and Caudata were Rana nigromaculata, Rana rugosa, Rana catesbeiana, Hynobius leechii. The histological prepared skin of frogs were compared, of which were selected from dorsal and belly. Excretory glands were identified granular glands, mucous glands, serous glands, vacuoles and excretory ducts in epidermal and dermal tissue. And developing excretory glands, well developed excretory glands and post developing excretory glands were identified also. These results were significantly as basal data on the comparative epidermal skin histology on some Korean Amphibia. Probably these glands of amphibian skin could be infered which were adaptable structure to ecological suffered condition. Following study of these results were more considerable data for comparative histology, comparative anatomy and comparative physiology and ecology of Amphibia.

Endocrine Disruption by Alkylphenols in Amphibians (알킬페놀류 화합물의 양서류 내분비계장애 효과)

  • Ahn, Hae-Sun;Park, Chan-Jin;Ahn, Hyo-Min;Gye, Myung-Chan
    • Korean Journal of Environmental Biology
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    • v.29 no.1
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    • pp.1-10
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    • 2011
  • Amphibian population declines globally. Aquatic contamination by organic pollutants including endocrine disrupters has been suspected to the one of the reason for distinction of amphibia which has obligate aquatic life style during larval period. Amphibians have been widely accepted as animal model for the study of endocrine disruption in aquatic ecosystem at molecular as well as individual levels. There are increasing need for toxicological data in amphibians at multiple endpoints for management of contamination and development of safety guideline for important EDs in aquatic media. Alkylphenols have been widely used in agricultural, industrial, and housekeeping activities, contaminating the aquatic media and evoking endocrine disruption in aquatic animals. In this review, we summarized data concerning the endocrine disruption by alkylphenol organic pollutants on amphibians according to route, concentration, terms, and developmental stage of exposure together with mechanism of endocrine disruption.

Comparison of Health Status of Japanese Tree Frog (Hyla Japonica) in a Rural and an Urban Area (농촌과 도시 지역에 서식하는 청개구리 (Hyla japonica)의 건강도 비교)

  • Park, So Hyun;Cho, Kang-Hyun
    • Ecology and Resilient Infrastructure
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    • v.4 no.1
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    • pp.71-74
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    • 2017
  • Urbanization is a major driver of global amphibian declines. For the study on the effect of urbanization on amphibians, we compared the growth and the health status of Hyla japonica amphibians collected in the urban areas of Incheon and in the rural area of Gapyeong, Korea. The size and weight of Hyla japonica body in the urban area were smaller than those in the rural area. However, there was no significant difference in their condition factors as a health indicator between the two areas. Our study emphasizes the need for research into the specific mechanism of effects of urbanization on amphibian heath status for the further understanding of the relationship between urbanization and amphibians.

Effects of Azole Fungicide on Amphibian: Review (Azole계열 항곰팡이 물질의 양서류 독성: 총설)

  • Park, Chan Jin;Park, Yong Ah;Ok, Seung Seok;Gye, Myung Chan
    • Korean Journal of Environmental Biology
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    • v.32 no.1
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    • pp.1-15
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    • 2014
  • Amphibians play a pivotal role in the ecosystem as a mediator between aquatic and terrestrial environment. Currently they are directly exposed to a variety of chemicals in the aquatic environment throughout their life cycle. Azole fungicides have been widely used in medical applications and agricultural activities. The direct exposure of azole fungicides causes an alarming situation for various ecosystem. Recently, teratogenesis and endocrine disruption by azole fungicides have been reported in amphibians. In an effort to provide the current information for amphibian toxicity of azole fungicides and to make the guidelines for safe usage of azole-based materials, the effects of azole fungicides including imidazole, triazole, thiazole, oxazole, and pyrazoleon on early development, differentiation and reproduction of amphibians were reviewed.

Amphibian and Reptilia Fauna in Chuwangsan National Park (주왕산국립공원의 양서.파충류상)

  • 박병상
    • Korean Journal of Environment and Ecology
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    • v.8 no.2
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    • pp.177-182
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    • 1995
  • Amphibian and Reptilian fauna in Chuwangsan National Park was carried out both Apr. 28, 1994 - Apr. 30, 1994 and Aug. 4, 1994-Aug. 5, 1994. 7 species in 5 Families in Amphibia and 7 species in 3 Families in Reptilia were observed in this survey. Rana dyhowskii in Amphibia and Rhabdophis tigrinus tigrinus in Reptilia were revealed dominant species in Chuwangsan National Park. The results in this survey would be use to baseline data significantly after the project of construction works in Chuwangsan National Park.

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Changes in Habitats of Fish and Amphibian Due to Erosion Control Dam Constructed in a Mountain Stream, Gongju, Chungchoengnamdo (충청남도 공주시 소재 산지계류 내 시공된 사방댐에 의한 어류 및 양서류 서식의 변화)

  • Lee, Sang In;Seo, Jung Il;Kim, Suk Woo;Chun, Kun Woo
    • Journal of Korean Society of Forest Science
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    • v.108 no.2
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    • pp.241-258
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    • 2019
  • The aim of this study was to analyze the factors that affect the habitat of fishes and amphibians in a mountain stream that is part of an experimental forest at Kongju National University, Gongju, Chungcheongnam, Korea, and examine the differences in the presence of fishes and amphibians in the stream before and after construction of an erosion control dam. The results showed that the factors that affect the presence of fishes are pH, electrical conductivity (EC), dissolved oxygen (DO), flow velocity, and step-pool number, and that the factors that affect the presence of amphibians are monthly rainfall, pH, EC, DO, and crown density. Of these factors, pH, EC, flow velocity, and monthly rainfall were significantly different before and after dam construction; however, the differences among the other three factors from dam construction, except EC, might not have been enough to affect the presence of fishes and amphibians. Our results suggest that the difference in the frequency of fishes and amphibians surveyed before and after dam construction in the upper and lower stream sections were not statistically significant. One exception to this was the presence of amphibians in the lower stream section during and after dam construction, which could have been the result of a large amount of sediment produced by excavation that led to high EC.

Distribution of Fish and Amphibian in Rice Fields Near the Yedang Reservoir in Korea (충남 예산군 예당저수지 수변 농경지의 어류와 양서류 분포특성)

  • Kim, Su-kyung;Park, Hyun-Sook;Park, Shi-Ryong
    • Korean Journal of Environment and Ecology
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    • v.30 no.1
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    • pp.48-57
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    • 2016
  • The distribution of fish (Cobitidae and Cyprinidae) and amphibians together with related environmental factors were surveyed at 30 randomly selected rice-fields (15 flooded unmanaged rice fields (FUR) and 15 unflooded managed rice fields (UMR)) near the Yedang reservoir in Korea, eight times from May to August in 2012. The total number of species captured from the entire survey area was 13 species with 8 families of fish and 5 species of amphibians. The number of species of Cyprinidae fish captured in FUR was higher than that in UMR. Upon the comparative analysis on the distribution of fish and amphibians in FUR and UMR, it was found that the number of Cyprinidae fish captured in FUR was significantly higher than that in UMR while the number of Cobitidae fish captured in UMR was higher than that in FUR. According to the analysis on the environmental factors that affect the distribution of fish, Cyprinidae fish tend to appear in rice-fields, that were flooded in winter, near the Yedang reservoir while Cobitidae fish tend to appear in rice fields that draws its water supply from forest reservoir and have a good water drainage system. In case of amphibians, the number of tadpoles captured in UMR was higher than that in FUR. Rana catesbeiana was dominant in FUR and Rana nigromaculata was dominant in UMR. Upon the analysis on the environmental factors that affect the distribution of tadpoles, it was found that Rana catesbeiana tadpoles tend to appear in rice fields, that were flooded in winter, near Yedang reservoir while Rana nigromaculata tadpoles tend to appear near mountains and far from the Yedang reservoir.

Study on the Amphibia Fauna in Tokyusan National Park -Effects of Amphibia Habitat by Large Construction Works- (덕유산 국립공원의 양서류상 -대형 건설 공사가 양서류 서식에 미치는 영향-)

  • 박병상
    • Korean Journal of Environment and Ecology
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    • v.7 no.2
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    • pp.207-212
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    • 1994
  • The census of Amphibia fauna in Tokyusan National Park was carried out during April 10, 1993 and August 8 - August 9, 1993 at the areas of construction field of golf course in Muju Resort and the Chibong. There were 6 species of 5 genera on the 4 families, 2 orders of Amphibia in Tokyusan National Park including Hynobius leechii. Onychodactylus fischeri, and Bufo bufo gargarizans which were announced the specific wild animals with the object of conserving by The Ministry of Environment. At the area of construction field of golf course in Muju Resort, there were 5 species of Amphibia observed as Hynobius leechii, Bombina orientalis, Bufo bufo gargarizans, Rana nigromaculata, and Rana dybowskii. Onychodactylus fischeri and Rana dyhowskii were observed at the Chibong area. The Chibong inwhich was observed 9 relatively large number of individuals of Onychodactylus fischeri was revealed as an environmentally sound habitat to Onychodactylus fischeri. Whereas in the construction field of golf course, there were intended to diminishing species and population size rapidly by progress with construction works. Therefore the large construction works such as golf couse and ski slopes which were concerning to deteriorate the natural environment should be restrain in National Park for animal diversity conservative.

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