• 제목/요약/키워드: Palearctic

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A review of Gymnophalloides seoi (Digenea: Gymnophallidae) and human infections in the Republic of Korea

  • Lee, Soon-Hyung;Chai, Jong-Yil
    • Parasites, Hosts and Diseases
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    • 제39권2호
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    • pp.85-118
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    • 2001
  • Studies on Gymnophalloides seoi (Digenea: Gymnophallidae) and human infections are briefly reviewed. This minute intestinal fluke was first discovered from a Korean woman suffering from acute pancreatitis and gastrointestinal troubles. It was described as a new species by Lee, Chai and Hong in 1993. The southwestern coastal village where the patient resided was found to be a highly endemic area, and additional endemic areas have been identified. The parasite is very small, 0.33-0.50 mm long and 0.23-0.33 mm wide. and characterized by the presence of a ventral pit. The first intermediate host remains unknown, but the second intermediate host has been found to be the oyster Crassostrea gigas. Man and the Palearctic oystercatcher Haematopus ostralegus have been shown to be natural definitive hosts , and wading birds including the Dentish plover Charadrius alexandrinus are highly susceptible to experimental infection. Gerbils, hamsters, cats, and several strains of mice were also susceptible laboratory hosts. In experimentally infected mice, the parasites inhabit the small intestine, pinching and sucking the root of villi with their large oral suckers, but they did not invade beyond the mucosa in immunocompetent mice. However, they were found to invade the submucosa in immunosuppressed mice. Human G. seoi infections have been found in at least 25 localities; 23 islands on the Yellow Sea or the South Sea, and 2 western coastal villages. The highest Prevalence was found in a village on Aphaedo. Shinan-fun (49% e99 Positive rate) : other areas showed 0.8-25.3% prevalence. Infected people complained of variable degrees of gastrointestinal troubles and indigestion. The infection can be diagnosed by recovery of eggs in the feces; however, an expert is needed to identify the eggs. Praziquantel, 10mg/kg in single dose, is effective for treatment of human infections. Eating raw oysters in endemic areas should be avoided.

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앤드류스 실습림의 토양절지동물의 종류와 분포에 관한 연구 (Studies of the Fauna of Soil Microarthropods in H.J. Andrews Experimental Forest)

  • 우건석
    • 한국응용곤충학회지
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    • 제28권4호
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    • pp.210-220
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    • 1989
  • H.J. Andrews Expt. Forest의 토양절지동물의 분포상을 조사한 결과 Coleoptera가 14과 41종으로 우점군임이 밝혀졌으며, 토양응애는 6과 7종의 분포가 확인되었으며 Typhlodromus, Gymnodamaeus, Phauloppia 및 Scleroribates 등은 계절변동 없이 발생하고 있음이 알려져 구북구계의 발생생태와 차이가 있었다. 기타 곤충군의 발생은 Collembola 4과 16종, Psocoptera 4과 4종, 식균성 총채벌레 3과 16종, Hemiptera 1과 1종, Diptera 3과 6종, Hymenoptera 1과 10종이었다. 산림토양의 절지동물은 산림생산단계의 1차 분해자로 중요한 역할을 수행하며, 부식절이 풍부한 토양조건은 무식생구에 비하여 종다양성은 낮으나 안전도가 높게 나타나 재생산의 주요인자로 해석된다.

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Bibliographic checklist of Korean spiders (Arachnida: Araneae) ver. 2015

  • Yoo, Jung Sun;Lee, Sue Yeon;Im, Moon Soon;Kim, Seung Tae
    • Journal of Species Research
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    • 제4권spc호
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    • pp.1-112
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    • 2015
  • The 2015 version of the bibliographic checklist of Korean spiders from the first checklist by Paik and Kim (1956) is presented, together with a complete bibliography of relevant Korean araneological literature. A total of 620 publications during 1907-2015 including original description on the Korean spiders and records of taxonomic description were critically reviewed. Records only from locations within the present borders of South Korea are listed. A total of 748 spider species of 271 genera belonging to 46 families are confirmed to exist in Korea. Twenty one species, whose distribution or existence within the Korean border are uncertain and lacked valid records, are excluded from the present list pending critical validation. Four spider species endemic to North Korean are listed separately from the present list. One genus, Joopilia Chae and Sohn, 2013 and 2 species, Joopilia jooplis Chae and Sohn, 2013 and Dolomedes jirisanensis Kim and Chae, 2012, which had no designated type species and no diagnosis, are cited as nomina nuda. New synonyms of 15 previously described spider species are proposed. Based on their zoogeographical distribution, the Korean spider fauna was found to be influenced by the northern species, including 36 Holarctic and 72 Palearctic species (14.5% of the total species). Korean endemic species include 160 species (21.5% of the total species). Korean indigenous spiders are also distributed in neighboring countries: 318 species in Russia (42.7%), 460 in China (61.7%), and 488 in Japan (65.5%).