• 제목/요약/키워드: three species

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한국산 Moina 속 (새각 강, 지각 목, 모이나물벼룩 과) 물벼룩류의 분류학적 연구 (A Taxonomic Study on Genus Moina (Branchiopoda, Cladocera, Moinidae) of Korea)

  • 윤성명;김원
    • Animal Systematics, Evolution and Diversity
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    • 제8권1호
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    • pp.89-106
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    • 1992
  • 1983년 7월부터 1991년 7월까지 남한의 각종 담수역 65개 지점에서 채집된 모이나물벼룩류의 표본들을 검토한 결과 한국미기록종 1종을 포함한 3종이 동정되었다. 한국산 Moina속 물벼룩류 4종에 대한 검색표와 함께, 본 연구에서 동정된 3종에 대하여 단위생식하는 암컷 뿐만이 아니라 국내에서 잘 알려져 있지 않았던 수컷 및 휴지란 등을 기재하고 도판을 작성하였다.

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Expression of CyI Cytoplasmic Actin Genes in Sea Urchin Development

  • Hahn, Jang-Hee;Raff, Rudolf A.
    • BMB Reports
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    • 제29권5호
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    • pp.474-480
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    • 1996
  • We present a study of evolutionary changes in expression of actin genes among closely related sea urchin species that exhibit different modes of early development. For this purpose, polyclonal antisera raised against peptides from the carboxyl terminus of the HeCyI cytoskeletal actin of Heliocidaris erythrogramma were used. H. erythrogramma is a direct developing sea urchin that proceeds from embryonic to adult stages without an intervening feeding larval stage. Expression patterns of the CyI actin isoform were compared with those of Heliocidaris tuberculata and to a related sea urchin Strongylocentrotus purpuratus, which both produce a feeding pluteus larval stage. The CyI actin of all three species is expressed in the same cell types. However, its expression patterns have been changed with reorganization of early cell lineage differentiation, which is apparent among the three species. Thus. evolutionary changes in CyI actin gene expression patterns are correlated with not only phylogenetic relationship, but developmental mode. The implication of this observation is that evolutionary changes in expression patterns of histospecific genes may underlie the emergence of novel developmental processes.

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New record of a sea star of genus Solaster (Asteroidea: Valvatida: Solasteridae) from the East Sea, Korea

  • Ubagan, Michael Dadole;Shin, Sook
    • 환경생물
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    • 제37권4호
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    • pp.503-507
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    • 2019
  • Asteroid specimens were collected using fishing nets from the East Sea, Korea. The specimens were identified as Solaster paxillatus Sladen, 1889, belonging to the family Solasteridae of the order Valvatida. This species can be distinguished from three other Korean Solaster species by having 10 arms; subambulacral spines comprising four or five near base of arm, six or seven in middle part, and five or six in distal part of arm; furrow spines comprising four or five near basal part and three or four in distal part of arm; and suboral spines comprising more than ten spinules. The morphological characteristics of this species were described with illustrations. Solaster paxillatus is first reported in marine fauna of Korea.

Brief morphological description of stichotrichid ciliates (Ciliophora: Stichotrichia) from Korea

  • Kim, Kang-San;Min, Gi-Sik
    • Journal of Species Research
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    • 제7권4호
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    • pp.323-332
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    • 2018
  • Ten stichotrichid ciliates were identified from six environmental samples, consisting of one freshwater, two seawater, and three soil samples. Morphological assessments were performed based on observations of both living and stained specimens. These species were assigned to two orders, three families, and nine genera, and we provide photographs and brief descriptions and remarks for each species: Parabirojimia similis Hu et al., 2002, Arcuseries warreni (Song & Wilbert, 1997) Huang et al., 2014, Gonostomum lajacola Foissner, 2016, Paragonostomoides xianicum Wang et al., 2017, Australocirrus oscitans Blatterer & Foissner, 1988, Monomicrocaryon crassicirratum Foissner, 2016, Monomicrocaryon euglenivorum fimbricirratum Foissner, 2016, Notohymena rubescens Blatterer & Foissner, 1988, Sterkiella multicirrata Li et al., 2018, Stylonychia ammermanni ammermanni Gupta et al., 2001.

한국산 꽃파리과 해충의 분류 (I) (쌍시목 : 유판류) (Classification of the Anthomyiidae from Korea (I) (Diptera: Calyptratae))

  • 권용정;서상재
    • 한국응용곤충학회지
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    • 제21권2호
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    • pp.99-102
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    • 1982
  • 꽃파리류는 식물잠식해충으로서 그 경제적 중요성이 크나, 우리나라산 꽃파리과에 대해서는 최근 Suwa (1981)에 의해 총 8속 13종(1미동정종)이 알려지고 있을 뿐 그 외에는 별로 연구된 바 없다. 저자들은 한국산 꽃파리과 해충의 계통분류학적 연구의 일환으로 정리하고 있던 중 새로이 3속 3종을 발견하였기에 이에 보고코자 한다. 그 중 Meliniella luteipennis(Ringdahl, 1950)(대륙꽃파리, 신칭) Delia echinata(Seguy, 1923)(별고자리꽃파리, 신칭)는 한국미기록종이며 Emmesomyia koreana sp. nov. (우리꽃파리, 신칭)는 새로 신종으로 기재된다.

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한국산 밤나방과(나비쪽) 3 미기록종에 관한 보고 (Three Unknown Species of Noctuidae from Korea (Lepidoptera))

  • 한휘림;;박규택
    • 한국응용곤충학회지
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    • 제44권3호
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    • pp.165-168
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    • 2005
  • 밤나방과에 속하는 Eupsilia boursini Sugi, Valeria tricristata Draudt, Othosia satoi Sugi 등 3종이 한국에서 처음으로 보고된다. 새로이 밝혀진 미기록 3종에 대해 성충의 외부형태적 특징과 암수생식기를 간략한 기술과 함께 도해하였다.

인공 산성비가 소나무와 잣나무 잎의 수분상태에 미치는 영향 (Effect of Simulated Acid Rain on Water Status of Pinus densiflora and P. koraiensis)

    • 한국자원식물학회지
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    • 제12권1호
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    • pp.10-19
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    • 1999
  • The water status of Pinus densiflora and P. koraiensis was observed after the treatment of simulated acid rain for every month August 1997 to March 1998. Both of the species showed increase of dry weight, water saturation deficit and epidermis transpiration after treatment of simulated acid rain (pH 3.5) for first three months. On the contrary, water content was decreased in both the species after three month of simulated acid rain treatment. The effect of simulated acid rain, however, became weaker after that and no big difference was observed after seven month of treatment. Water potential of the leaf of both species became lower than that of the control(pH 5.6) after seven month treatment of simulated acid rain. The cuticle layers of the epidermis and florins ring were damaged seriously and the size of the gap between stomata became bigger after the treatment of simulated acid rain.

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침·활엽수재의 Microwave 건조곡선예측 (Prediction of Microwave Drying Curves for Various Hardwoods and Softwoods)

  • 강호양
    • Journal of the Korean Wood Science and Technology
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    • 제26권4호
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    • pp.34-42
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    • 1998
  • Three hardwood (ash, alder and black locust) and three softwood (Japanese red pine, radiata pine and Western hemlock) specimens were dried in microwave(MlW) oven and their drying rates were obtained. Their specific permeabilities were also measured by using a modified liquid permeability measuring device. The correlation between the M/W drying rates and permeabilities of six species were statistically analyzed. It was revealed that within a species there is a logarithmic relationship between the M/W drying rates and average moisture contents and that among species there is a linear relationship between the M/W maximum drying rates and the average specific permeabilities. A exception was Western hemlock, which was of low permeability and of high drying rate. A Me-time equation, which showed a good agreement with the actual data, was derived. Thus using this equation the moisture contents of wood and the drying end points of M/W drying could be predicted. Infrared images of the thermal distribution in wood were illustrated.

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First Records of Three Crabs (Crustacea: Decapoda) from Korea

  • Lee, Kyu-Hyun;Ko, Hyun-Sook
    • Animal Systematics, Evolution and Diversity
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    • 제24권1호
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    • pp.17-24
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    • 2008
  • Three crab species, Macromedaeus orientalis, Eriphia smithi, and Ocypode cordimana, from Jejudo Island are recorded for the first time in Korea. M. orientalis was collected under the rocks by SCUBA diving in 20m and at low tidal mark. However, E. smithi and O. cordimana were collected in crevices of the rock at low tidal mark and in a burrow of sand beach at supra tidal mark, respectively. At present, E. smithi is the only species of the genus represented in Korean waters. Including the new records in this study, the established brachyuran fauna in Korea now comprises 203 species.