• Title/Summary/Keyword: Aquatic animal

검색결과 347건 처리시간 0.028초

Two Aquatic Oligochaete Species, Dero dorsalis and Allonais pectinata (Annelida: Clitellata: Naididae), New to Korea

  • Lee, Jeounghee;Jung, Jongwoo
    • Animal Systematics, Evolution and Diversity
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    • 제30권2호
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    • pp.119-123
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    • 2014
  • The genera Dero and Allonais belong to the family Naididae. Most species in the genus Dero have unique morphological characters including a branchial fossa and/or gills at the posterior end of the body. The genus Allonais has no eyes unlike its close relative the genus Nais. Of these genera, one species of Dero, D. obtusa, was recently reported in Korea. However, the genus Allonais has not been recorded in Korea. Here, we report Dero dorsalis Ferroni$\grave{e}$re, 1899 and Allonais pectinata (Stephenson, 1910) with a diagnosis and illustrations.

진도의 육상하모섬모충류 (Terrestrial Hypotrichous Ciliates from Chindo Island, Korea)

  • 신만균;김원
    • Animal Systematics, Evolution and Diversity
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    • 제12권1호
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    • pp.17-24
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    • 1996
  • 진도의 육상에 서식하는 하모섬모충류 5종 Stronogylidium muscorum, Gonostomum affine, Histriculus cavicola, H. muscorum, Steinia quadrinucleata의 분류목록을 작성하였 다. 이 가운데 Strongylidium muscorum Kahl, 1932와 Steinia quadrinucleata Dragesco and Njin , 1971의 2종은 한국에서 처음으로 발견된 종으로서 이들에 대해서 재기재하였다.

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Neurobiochemical Analysis of Abnormal Fish Behavior Caused by Fluoranthene Toxicity

  • Shin, Sung-Woo;Cho, Hyun-Duk;Chon, Tae-Soo;Kim, Jong-Sang;Lee, Sung-Kyu;Koh, Sung-Cheol
    • 한국환경독성학회:학술대회논문집
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    • 한국환경독성학회 2003년도 춘계학술대회
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    • pp.158-159
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    • 2003
  • Fluoranthene, a common polycyclicaromatic hydrocarbon (PAH), exhibits phototoxicity which may affect aquatic organisms. The eventual goal of this study is to develop a biomarker used in monitoring abnormal behaviors of Japanese medaka (Oryzias latipes) as a model organism caused by hazardous chemicals that are toxic and persistent in the ecosystem. In this study, we investigated neural toxicity of fluoranthene in Japanese medaka (Oryzias latipes) which was correlated with its behaviors.

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자연친화적 정비수로의 생태변화에 관한 연구 (A Study on Ecological Changes of naturally favorable Consolidated channel)

  • 김선주;안민우
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 2001년도 학술발표회 발표논문집
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    • pp.236-240
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    • 2001
  • When we make on irrigation and drainage canals, the environment should be preferentially taken into consideration. The purpose of this study is to test Close-to-nature Consolidation Techniques in the drainage canals of Samsungri, Kanam-myun, Yeoju-gun, Kyunggi-do. The monitoring and assessment of these techniques has been conducted during two years, focuesed the drainage canals ecological habitat and landscape. As the result of this study, the embankment covered with Close-to-nature Consolidation Techniques played an important role as a habitat for aquatic animal, fish and birds as well as the groth emergement plant.

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다중계측 데이터의 취득과 원격전송에 대한 연구 (A Study on the Acquisition and Remote-transmission of the Multi measurement data)

  • 주귀영;최조천
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2000년도 추계종합학술대회
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    • pp.528-533
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    • 2000
  • 원거리에 분산되어 있는 다수의 농축수산업 양식시설을 원격으로 감시하고 관리하기 위한 시스템으로 각각의 시설에 대한 온도, 습도, 전원 등의 환경 데이타를 수집한 후, 전화회선을 통하여 관리자측으로 전송하면 관리자측에서는 수신된 데이터를 수치로 표시하므로써 시설들의 환경상태를 원거리에서 항상 파악할 수 있는 시스템을 연구하였단. 시스템의 구성을 위하여 환경상태를 정확하게 검출할 수 있는 센싱회로와 멀티프로쎄싱을 위한 통신회로 그리고 데이터의 전송과 취득에 대한 알고리즘을 실험적으로 구현하였다. 즉, 저가의 설치와 운용비용으로 시설을 효율적으로 관리할 수 있으며, 생산성 의 향상은 물론 재해를 사전에 예방할 수 있는 효과를 기대하는 시스템이다.

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A New Species of the Genus Orthotrichia (Trichoptera, Hydroptilidae) from Korea

  • Ito, Tomiko;Park, Sun Jin
    • Animal Systematics, Evolution and Diversity
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    • 제32권3호
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    • pp.230-233
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    • 2016
  • In the family Hydroptilidae, Trichoptera, 11 species in 3 genera, Hydroptila Dalman, 1819, Oxyethira Eaton, 1873 and Stactobia McLachlan, 1880, have been recorded from the Korean Peninsula but, until now, no species in the genus Orthotrichia Eaton, 1873. In this paper, we describe a new Korean species, Orthotrichia coreana sp. nov., based on adult specimens from the middle reaches of rivers in the southern region of the peninsula. This species is similar to O. iriomotensis Ito, 2013 from the southernmost region of Japan, but is clearly discriminated from the latter by features of the male and female genitalia.

Freshwater Invertebrates of Jindo Island in Korea

  • Ahn, Dong-Ha;Lee, Chi-Woo;Yang, Hee-Min;Song, Ji-Hun;Kwon, Jae-In;Ji, Su-Jung;Park, Mi-Hyun;Min, Gi-Sik
    • Animal Systematics, Evolution and Diversity
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    • nspc9호
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    • pp.37-44
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    • 2016
  • We surveyed the freshwater invertebrates of Jindo Island twice on July and September 2016, as part of a joint faunal survey conducted to commemorate the 30th anniversary of the Korean Society of Systematic Zoology. Aquatic insects were not included in this study. We found 38 freshwater species from seven phyla: Porifera, Platyhelminthes, Nematomorpha, Mollusca, Annelida, Arthropoda, and Bryozoa. Twenty-one of the 38 species (55.3%) represented the first record of their respective species on Jindo Island. Among these species, a freshwater shrimp-parasitic isopod, Tachaea n. sp., was identified as a new species.

Evolution under unpredictable environmental conditions: quantitative genetics of larval life-history traits in a myobatrachid frog Crinia georgiana

  • Smith, Michael J.;Jang, Yikweon
    • Animal cells and systems
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    • 제16권5호
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    • pp.425-430
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    • 2012
  • The southwestern Australian frog Crinia georgiana (Anura; Myobatrachidae) inhabits ephemeral pools in which the tadpoles often face desiccation. Under these conditions selection on tadpoles can be severe and can directly affect fitness during the aquatic as well as the terrestrial developmental stages. A quantitative genetic study using a half-sib breeding design was conducted to understand the genetic effects on larval life-history traits. We found no significant additive genetic variance in any of larval traits. Except for hatching period, heritability estimates based on females were high in egg size, larval period, snout-vent length, and weight at metamorphosis, suggesting non-additive genetic effects. These results indicate that any response to selection during hatching and larval periods should be predominately governed by non-additive genetic effects in C. georgiana.

Residue of Clindamycin in the Muscles of Eel and Flounder Infected by Streptococcus sp. by HPLC

  • Jang, Won-Cheoul;Shim, Sang-Kyun;Heo, Gang-Joon
    • Toxicological Research
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    • 제13권3호
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    • pp.209-213
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    • 1997
  • Residue and recoveries of clindamycin were investigated by reversed-phase high performance liquid chromatography (RP-HPLC) which was infected for the control of streptcoccal infection in Anguilla japonica and Paralichthys olivaceusis. Detection limit was 0.1 ppm. Recoveries of clindamycin in muscles of flounder and eel were 80.4 and 78.8%, respectively. The clindamycin in eel and flounder was detected up to 13 and 15 days after dosing, respectively.

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First Records of Two Aquatic Oxytrichid Ciliates (Ciliophora: Sporadotrichida: Oxytrichidae) from Korea

  • Kwon, Choon-Bong;Shin, Mann-Kyoon
    • Animal Systematics, Evolution and Diversity
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    • 제27권1호
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    • pp.59-65
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    • 2011
  • For investigation of the Korean ciliate fauna, two oxytrichid ciliates, Histriculus histrio (Muller, 1773) and Sterkiella thompsoni Foissner, 1996, were collected from freshwater and brackish waters in South Korea, respectively. These two ciliates are reported for the first time in Korea. Descriptions were based on observations of live and silver stained specimens. Diagnoses of these species are as follows. Histriculus histrio: body is approximately $190{\times}85\;{\mu}m$ in size, almost ellipsoidal in shape, posterior part rather thin and very translucent. Cortical granules are absent. Both marginal rows are almost confluent at the posterior end. Six dorsal kineties are present. Sterkiella thompsoni: body is approximately $140{\times}50\;{\mu}m$ in size. Body margins are usually in parallel. Cortical granules are absent. Invariably, four dorsal kineties are present. Two caudal cirri are located on the dorsal surface. Three ellipsoidal macronuclear nodules are present.