• 제목/요약/키워드: invertebrate

검색결과 179건 처리시간 0.025초

한국산 섬서구메뚜기속(Atractomorpha)의 분류학적 검토 (A Taxonomic Review of the Korean Atractomorpha Saussure, 1862 (Orthoptera: Caelifera: Pyrgomorphidae))

  • 김태우
    • 한국응용곤충학회지
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    • 제48권4호
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    • pp.403-409
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    • 2009
  • 한국산 섬서구메뚜기속(Atractomorpha)의 분류학적 검토를 통해 섬서구메뚜기(Atractomorpha lata (Motschulsky, 1866))와 분홍날개섬서구메뚜기(신칭)(A. sinensis Bolivar, 1905) 두 종을 확인하였다. 이 중 분홍날개섬서구메뚜기는 한반도 남단의 섬 제주도와 가거도로부터 처음 보고되는 한국 미기록종이다. 두 종을 비교하여 동정할 수 있는 검색표, 기재, 사진 및 분포 정보를 제시하였다.

Use of Stable Carbon Isotope Ratios (${\delta}^{13}$C) for Identification of the Origin Organic Carbon in Benthic Food Webs in Youngil Bay, Korea

  • Lee, Won-Chan;Choi, Woo-Jeung;Lee, Pil-Yong;Kang, Chang-Keun
    • Journal of the korean society of oceanography
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    • 제35권2호
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    • pp.124-127
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    • 2000
  • The analysis of stable carbon isotope ratios for benthic fauna was applied to identify the source of carbon in benthic food webs in Youngil Bay, Korea. The ${\delta}^{13}$C values of 9 invertebrate species collected in this area showed a narrow range between -20.5 and -16.3%$_o$ with a mean of-18.1 (${\pm}$1.1)"%$_o$. The results suggest that the major source of organic carbon for the benthic fauna of the lower estuarine reaches and the oceanic sites is autochthonous marine particulate organic matter. The contribution of organic matter from terrestrial and riverine sources to the diet of the benthic fauna in this area appears to be minor, despite the considerable inflow of riverine waters.

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열대 해면동물 Lipastrotethya sp.에서 분리된 사포닌 화합물 (A New Triterpenoid Saponin from the Tropical Marine Sponge Lipastrotethya sp.)

  • 엄태양;이연주;이희승
    • Ocean and Polar Research
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    • 제38권4호
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    • pp.287-294
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    • 2016
  • Marine sponges have been a remarkably rich source of pharmacologically active and structurally diverse natural products. As a part of our continuing search for novel secondary metabolites of biomedical importance from marine invertebrate, we encountered the sponge Lipastrotethya sp. from Chuuk, Micronesia. The crude organic extract of this animal exhibited considerable cytotoxicity against the K562 cell line. Guided by the $^1H$ NMR analysis, flash chromatography of the crude extract followed by HPLC yielded a new triterpene glycoside, along with ten known saponins of the sarasinoside class. The structure of this new compound was determined by combined spectroscopic methods such as COSY, HSQC and HMBC experiment. Among these metabolites, six compounds exhibited moderate cytotoxicity against ACHN, MDA-MB-231, NCI-H23 and NUGC-3 cell lines.

다제내성 슈퍼박테리아에 대한 새로운 항생제인 항균 펩타이드 (Antimicrobial Peptide as a Novel Antibiotic for Multi-Drug Resistance "Super-bacteria")

  • 박성철;나재운
    • 공업화학
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    • 제23권5호
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    • pp.429-432
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    • 2012
  • 최근 항생제에 대한 내성이 빠르게 확산됨에 따라 이를 극복하기 위해 새로운 항생제들을 찾기 위한 노력이 많은 연구자들에 의해 이루어지고 있다. 미생물의 외부공격에 대해 모든 생명체들은 방어물질을 분비하거나 내재하고 있는 데 그 중 하나가 항균 펩타이드이며, 전 세계적으로 활발한 연구가 이루어지고 있고 새로운 차세대 항생제로써 인식 되어진다. 이에 본 총설에서는 항균 펩타이드의 미생물에 대한 항생활성, 작용기작과 개발현황에 대해 고찰하고자 한다.

산업폐수 방류수에 대한 생태독성 평가

  • 오경택;김우근;김지원;이순애;윤홍길;이성규
    • 한국환경생물학회:학술대회논문집
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    • 한국환경생물학회 2004년도 학술대회
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    • pp.127-131
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    • 2004
  • The toxicity of 54 selected process effluents of 16 industry classifications in Korea was evaluated by bioassay test using fish Oryzias latipes, invertebrate Daphnia magna, algae Selenastrum capricornutum and bacteria Vibrio fischeri. Our results demonstrate that the toxicity assessment, such as bioassay test, is effective and of practical use for industrial wastewater management in 54 selected effluents with the limitation of the physico-chemical permit. Among 54 effluents, 4 sample failed physico-chemical permit limitation and 50 passed it. The physcio-chemical measurement items and permit concentrations on the present Water Quality Conservation Act are low related a ecotoxicity.

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A Phylogenetic Analysis for Hox Linked Gene Families of Vertebrates

  • Kim, Sun-Woo;Jung, Gi-La;Lee, Jae-Hyoun;Park, Ha-Young;Kim, Chang-Bae
    • Animal cells and systems
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    • 제12권4호
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    • pp.261-267
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    • 2008
  • The human chromosomes 2, 7, 12 and 17 show genomic homology around Hox gene clusters, is taken as evidence that these paralogous gene families might have arisen from a ancestral chromosomal segment through genome duplication events. We have examined protein data from vertebrate and invertebrate genomes to analyze the phylogenetic history of multi-gene families with three or more of their representatives linked to human Hox clusters. Topology comparison based upon statistical significance and information of chromosome location for these genes examined have revealed many of linked genes coduplicated with Hox gene clusters. Most linked genes to Hox clusters share the same evolutionary history and are duplicated in concert with each other. We conclude that gene families linked to Hox clusters may be suggestion of ancient genome duplications.

한국산 미기록과 턱바구미과(딱정벌레목, 바구미상과)에 속한 무궁화턱바구미 (A New Record of the Family Brachyceridae (Coleoptera: Curculionoidea) and a New Species, Desmidophorus hebes (Fabricius), in Korea)

  • 홍기정;박상욱;김태우
    • 한국응용곤충학회지
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    • 제50권3호
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    • pp.179-184
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    • 2011
  • 한국산 미기록과인 턱바구미과(Brachyceridae)(신칭)에 속한 Desmodophorus hebes (Fabricius) (무궁화턱바구미)(신칭)를 국내에서 처음으로 분류학적으로 검토하였다. 이 종에 대한 재기재문, 성충사진, 진단형질 그림, 동아시아지역에 분포하는 Desmidophorus (턱바구미속)의 종 검색키와 한국산 바구미상과(Curculionoidea)의 과(family) 검색키를 제공하였다.

검은과부거미 (Latrodectus mactans) 피부 색소의 미세구조에 관한 연구 (Fine Structure of the Cutaneous Pigments in the Black Widow Spider, Latrodectus mactans)

  • 문명진
    • Applied Microscopy
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    • 제28권4호
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    • pp.503-512
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    • 1998
  • Fine structure of the cutaneous pigments in the black widow spider, Latrodectus mactans are studied with light and electron microscopes. The cutaneous pigments are only observed in epidermal layer just beneath the cuticle. These pigments are compactly distributed around the spinnerets which located at caudal area of the abdomen. According to the fine structural characteristics of the pigment granules, two main types of guanine pigment granules-carotenoid vesicles and reflecting platelets - are observed in the cytoplasm of the epidermal cells. Morphological features of these pigment granules are characterized as the electron dense carotenoid vesicles and the electron lucent reflecting platelets. Marginal electron density of the carotenoid vesicle is different from that of internal region, whereas the reflecting platelets have laminated crystalline granules. Typiral structures of these pigment granules are very similar to those of invertebrate's chromatophores, especially erythrophores and iridophores. Moreover differentiation of these pigment granules are also originated from the small vesicles of Golgi complexes similarly to those of cutaneous chromatophores.

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New Species of the Genus Pseudanthessius from Tropical Waters (Copepoda, Cyclopoida, Pseudanthessiidae)

  • Lee, Jimin;Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • 제37권4호
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    • pp.287-321
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    • 2021
  • Nine new species of Pseudanthessius are described from tropical waters, five of which from the Philippines (P. boholensis n. sp., P. angustus n. sp., P. firmus n. sp., P. ardius n. sp., and P. lativentris n. sp.), two from Vietnam (P. remicaudatus n. sp. and P. nodosus n. sp.), and one each from Micronesia (P. kosraensis n. sp.) and the Thai coast of the Andaman Sea (P. fossulicolus n. sp.). Pseudanthessius dentatus Kim, 2000 which was known originally from the Korean coast of the Yellow Sea, and P. planus Kim, 2007 originally from the Moluccas, are rediscovered on the Thai coast of the Andaman Sea and the Philippines, respectively.