• Title/Summary/Keyword: n. sp.

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Two new sympatric species of the family Bathynellidae from North America (Crustacea, Syncarida, Bathynellacea) (공존하는 미국산 Bathynellidae과의 두 신종)

  • 조주래;김주필
    • Animal Systematics, Evolution and Diversity
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    • v.13 no.1
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    • pp.61-72
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    • 1997
  • Two new coexisting sepcies of the genus Bathynella of the Bathynellidae is described from North America. B. germanitas n. sp. is easily recognized by the basidorsal existence of cylindrical protrusion with a seta on endopod of uropod, whereas B. fraterna n. sp. is characterized by by the setal nature of exopod of thoracopods II-Vll.

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Two New Species of Genus Suberites (Hadromerida: Suberitidae) from Korea

  • Shim, Eun-Jeong;Sim, Chung-Ja
    • Animal Systematics, Evolution and Diversity
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    • v.24 no.2
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    • pp.215-218
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    • 2008
  • Two new marine sponges in genus Suberites, S. hataedoensis n. sp and S. waedoensis n. sp have been collected from Hataedo Island and Waedo Island, Korea during 2005-2006. S. hataedoensis n. sp. is similar to S. durissimus in the spicule composition and texture. However, they differ in growth form, skeleton and surface. S. waedoensis n. sp. is similar to S. japonicus in spicule composition and skeleton. However, they differ in growth form, surface and texture.

Isolation of Neutral Protease Hyperproducing Bacillus sp. KN103N and Some Properties of the Enzyme (中性 Protease 高 生産性 Bacillus sp. KN103N의 分離 및 酵素의 特性)

  • Kim, Hong-Rip;O, Pyong-Su
    • Microbiology and Biotechnology Letters
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    • v.19 no.2
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    • pp.116-121
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    • 1991
  • A bacterial strain KN, which highly produced a protease, was isolated from several soil samples and identified to to belong to the genus Bacillus. We selected mutant strain Bacillus sp. KN103N, which was hyperproducer of protease and was resistant to D-cyclowerine, from the strain KN by several steps of mutagenesis. Neutral protease productivity of mutant strain KN103N was about 55 times as much as that of the original strain KN. The optimum pH and temperature for the enzyme activity were 7.0 and 50$^{\circ}C$, respectively and the enzyme was relatively stable at pH6.0~8.0 and below 40$^{\circ}C$. The enzyme was inactivated by EDTA, but not by DFP. These results indicate that the enzyme from Bacillus sp. KN103N was a neutral (metallo-) protease.

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Isolation of Ubiquinone Formation Photosynthetic Bacteria Rhodobacter sp. N-2 (Ubiquinone생성 광합성 세균 Rhodobacter sp. N-2의 분리)

  • 이은숙;이준우
    • The Korean Journal of Food And Nutrition
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    • v.13 no.6
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    • pp.558-562
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    • 2000
  • A strain of non-sulfur photosynthetic bacteria possessing large amount of ubiquinone-10 in the cell mass, was isolated from waste water collected from the Nakdong River. It was identified as Rhodobacter sp. N-2 by a series of studies on its morphological. cultural and physiological characteristics. The organism appeared to got higher cell mass under circumstances of anaerobic growth conditions than under photosynthetic aerobic cultures. Biotin and thiamin and niacin could be used as good growth factors.

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Classification of the Triozidae front Korea (Homoptera: Psylloidea) (한국산 참나무이과 해충의 분류 (동시아목 : 나무이 상과))

  • Kwon Yong Jung;Lee Hyeung Sik
    • Korean journal of applied entomology
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    • v.20 no.3 s.48
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    • pp.155-167
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    • 1981
  • This paper deals with the Triozidae of Korea A total of 20 species belonging to 5 genera are recognized, among them 6 species are new to science as: Bactericera (S.) distinctissima n. sp., B. (S.) miyatakei n. sp., B. (S.) yamagishii n. sp., Heterotrioza (D.) noknamui n. sp., Trioza breviata n. sp., and T. mayicola n. sp., 4 species are newly recorded from Korea as: Epitrioza yasumatsui Miyatake, 1978, Bactericesa (S.) calcarata (Schaefer, 1949), B, (S.) striola (Flor, 1861), and Trioza abdominalis Flor, 1861, and a new combination is made to: Heterptrioza (D.) chilgia (Park et Lee, 1980) n. comb. Keys are provided to the genera and species respectively Some illustartions of head, forewing, male and female genitalic characters are given.

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Descriptions of Four New Species of Actinolaimoidea (Dorylaimida:Nematoda) from Korea (한국산 Actinolaimoidea상과의 (Dorylaimida:Nematoda) 4신종 기재)

  • ;Zakaullah Khan
    • The Korean Journal of Soil Zoology
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    • v.5 no.2
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    • pp.85-96
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    • 2000
  • Four new species of predatory nematodes belonging to the Actinolaimoidea, Dorylaimida are described. Neoactinolaimus gosungensis n. sp. is 2.2-2.4 mm long, b = 4.3-4.9; c = 10.7-11.2; species 60-62 ${\mu}{\textrm}{m}$ long and is distinguishable by low lip region, asymmetrical odontostyle and its wider lumen. Egtitus arcuatus n. sp. is 1.5-1.8 mm long, b = 3.6-4.2; c = 14-15 and is characterized by having dorsally arcuate odontostyle and presence of cardiac glands at base of oesophagus. Paractinolaimus tuberculantus n. sp. is 1.9-2.5 mm long, b = 3.3-4.0, c = 7.2-8.8, spicules 66-69 ${\mu}{\textrm}{m}$ long and is unique in having coiled body posture and a tubercle at the base of oesophagus. Carcharolaimus koriensis n. sp. is 1.7-1.9 mm long, b = 3.6-4.5, c = 65-76 and is characterized by having very thick body cuticle and larger odontostyle aperture.

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Descriptions of Four New and An unknown Species of Predatory Nematodes (Mononchida) from Korea (한국산 포식선충(Mononchida:Nematoda)의 4신종 및 1미기록종 기재)

  • Khan Zakaullah
    • The Korean Journal of Soil Zoology
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    • v.5 no.2
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    • pp.71-83
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    • 2000
  • Mylonchulus jinjuensis n. sp. is 1.8-2.2 mm long, spicules 58-$67{\mu}textrm{m}$ long and is distinguishable by basally situated subventral teeth, presence of hypodermal glands and ventural body pores. Mylonchulus taeguensis n. sp. is 1.3-1.8 mm long, spicules 52-$64{\mu}textrm{m}$ long and is characterized by having small denticle on dorsal wall of buccal cavity at the level of dorsal tooth apex, and two each pre- and post-vulval papillae. Mylonchulus polynicus is reported here for the first time from Korea, is described and illustrated. Princhulus pachydermis n. sp. is 2-2.3 mm long and is distinctive in having very thick body cuticle and absence of caudal glands and spinneret. Prionchulus koriensis n. sp. is 1.7-2.0 mm long and is characterized by having elongate-conoid tail with sharply pointed terminus and presence of caudal glands.

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