• Animal cells and systems
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• 제11권2호
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• pp.215-225
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• 2007

The azooxanthellate soft coral Dendronephthya suensoni (Holem, 1895) is distributed mainly around Jejudo Island, Korea. This species was determined as gonochoric with a sex ratio of 2:1 (female:male). Both female and male colonies have one gametogenic cycle a year. The annual reproductive cycle of D. suensoni is dependent on the seawater temperature. In particular, reproduction of the male colony showed a higher positive correlation between seawater temperature and the mean diameter of the spermaries. Gametogenesis in females and males took 6 months and 12 months, respectively. The mean diameter of a mature oocyte was $249.29\;{\pm}\;36.24\;{\mu}m$, with a maximum size of $354.45\;{\mu}m$. Spawning could have occurred in the fall after the seawater temperature began to decrease.

• 한국제4기학회지
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• 제22권1호
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• pp.1-12
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• 2008

과거 수 년 간에 걸친 해양환경변화와 중금속 농도에 의한 오염정도를 알아보기 위해 열대 및 아열대 해역에서 흔히 볼 수 있는 경골산호(Porites lutea)를 조사하였다. 연X선 사진 분석 결과 분석된 산호시료는 길이 71mm 에 뚜렷한 성장륜을 가지고 있어 과거 수 년에 걸친 해양환경 변화를 잘 지시하고 있다. 골격 중에 포함된 주요원소 및 미량원소 분석결과 각 원소의 최고값, 최저값 사이의 편차가 큰 것으로 나타났다. 원소들 간의 관계를 살펴본 결과 일부원소는 화학적 분배계수에 의해 aragonite 격자에 기계적으로 치환되어 축적된 것으로 판단되며 일부원소는 이차적인 환경요인에 의해 축적된 것으로 판단된다. Sr/Ca, Mg/Ca에 근거한 환경변화는 수년전에 큰 변화가 있었던 것으로 판단되며 Mg/Ca의 경우 특정기간에 큰 폭으로 증가하는 경향을 보인다. 일부 중금속의 농도는 크게 수 십배의 농도 변화를 보이고 있으며 특히 Cu, Zn의 경우는 성장하는 동안 Mg/Ca와 같은 거동을 보이는 것으로 나타났다. 이러한 요인은 아마도 지역적 오염과 해양환경변화와 관련이 있는 것으로 해석된다. 추후 전처리 과정 등을 포함한 추가적인 연구를 필요로 한다.

• Animal cells and systems
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• 제8권3호
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• pp.187-196
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• 2004

Two new species of siphonostomatoid copepods, Asterocheres tubiporae n. sp. and Entomopsyllus stocki n. sp., associated with the stoloniferan coral Tubipora musica (Linnaeus) are described from Madagascar. Asterocheres tubiporae is characterized by the possession of a large posteroventral process on the caudal ramus and the elongated free segment of leg 5. Entomopsyllus stocki is readily distinguished from its congeners by the possession in the female of 15-segmented antennule and three spines plus two setae on the third exopodal segment of leg 4.

• Animal Systematics, Evolution and Diversity
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• 제26권1호
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• pp.49-54
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• 2010

Paramolgus orientalis n. sp. is described as an associate of the antipatharian coral Antipathes japonicus from Jeju Island, Korea. The new species is distinguished from its three relatives P. constrictus, P. delicatulus, and P. insectus, all known from antipatharians in tropical waters, by its long caudal ramus which is more than four times as long as wide, by the possession of 4 setae on maxillule, and by other morphological differences in the antenna and maxilla.

• 한국어업기술학회:학술대회논문집
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• 한국어업기술학회 2003년도 춘계 수산관련학회 공동학술대회발표요지집
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• pp.331-332
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• 2003

Protogyny is known in 14 families of fishes, 11 of which inhabit coral reef areas. The wrasses (Labridae) comprise a large and well-known family of coral reef fishes that exhibit sequential hermaphroditism. The purpose of the present investigation was to examine the allomeoic growth patterns of several morphometric characteristics, including those used commonly to distinguish sexes of cocktail wrasse, pteragogus aurigarius (Richardson) and to assess their effectiveness in discriminating between males and females. (omitted)

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 추계학술발표회
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• pp.72-72
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• 2017

• Animal Systematics, Evolution and Diversity
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• 제22권1호
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• pp.63-78
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• 2006

Three new species of poecilostomatoid copepods are described as associates of the scleractinian coral Gardineroseris planulata (Dana) from the Moluccas: Sociellus geminus n. sp., Odontomolgus mucosus n. sp. and O. unioviger n. sp. The genus Sociellus is transferred from the Rhynchomolgidae to the Anchimolgidae. The previously described four species of the genus Paramolgus (P. angustus, P. eparmatoides, P. gibberulus, and P. setellus) of the Rhynchomolgidae, associated with Gardineroseris planulata, are transferred as well to the genus Anchimolgus in the Anchimolgidae.

• 한국해양공학회지
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• 제19권4호
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• pp.28-34
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• 2005

In the study application of volcanic scoria concrete to artificial reefs is investigated. Volcanic scoria is a natural volcanic product that shows light weight, mil/i-porous, and far-infrared irradiation characteristics. The properties of volcanic scoria concrete using Jeju scoria aggregate are evaluated by conducting a comprehensive series of tests on strength and void ratio. It is concluded that the volcanic scoria concrete has the sufficient strength of 4MPa-13MPa and adequate void ratio of $12\%-35\%$ to be accepted as artificial reef concrete. The field experiments are performed through observation by scuba diver's at the Seogwipo coast. Porous specimen and plane concrete specimen are prepared for comparison purposes. Seasonal changes of soft coral on the two series of test specimens were have been observed from Apr. 9, 2004 to Mar. 18, 2005. The soft coral is well grown on the porous specimen however there are no significant changes on the conventional plain concrete specimen. Thus it is concluded that the volcanic scoria concrete is highly suitable as artificial reef concrete.

• Ocean Science Journal
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• 제40권1호
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• pp.55-59
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• 2005

We cloned the complete cDNA of the ${\beta}-bubulin$ from the soft coral, Scleronephthya gracillimum $(K\ddot{u}kenthal)$ (Alcyonacea, Octocorallia, Anthozoa, Cnidaria), via the random sequencing of a cDNA library and the 5'-rapid amplification of cDNA end (RACE) technique. The full-length cDNA of the S. gracillimum ${\beta}-tubulin$ comprised 1541 bp, not including the poly $A^+$ stretch, also contained a complete open reading frame, which codes for a total of 445 amino acids. The amino acid residues 16402 appeared to be in a state of conservation in a variety of animals. Northern blot analysis clearly demonstrated that the sequence we have obtained is, indeed, the full-length cDNA of the ${\beta}-bubulin$ gene in S. gracillimum.

• Fisheries and Aquatic Sciences
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• 제20권12호
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• pp.32.1-32.7
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• 2017

Recent in vitro studies have demonstrated that extract of soft coral Dendronephthya gigantea (SCDE) had strong anti-inflammatory activities. However, the direct effects of SCDE on anti-inflammatory activities in vivo model remained to be determined. Therefore, the present study was designed to assess in vivo anti-inflammatory effect of SCDE using lipopolysaccharide (LPS)-stimulated zebrafish model. We also investigated whether SCDE has toxic effects in zebrafish model. The survival, heart beat rate, and developmental abnormalities were no significant change in the zebrafish embryos exposed to at a concentration below $100{\mu}g/ml$ of SCDE. However, lethal toxicity was caused after exposure to 200 and $400{\mu}g/ml$ of SCDE. Treating zebrafish model with LPS treatment significantly increased the reactive oxygen species (ROS) and nitric oxide (NO) generation. However, SCDE inhibited this LPS-stimulated ROS and NO generation in a dose-dependent manner. These results show that SCDE alleviated inflammation by inhibiting the ROS and NO generation induced by LPS treatment. In addition, SCDE has a protective effect against the cell damage induced by LPS exposure in zebrafish embryos. This outcome could explain the profound anti-inflammatory effect of SCDE both in vitro as well as in vivo, suggesting that the SCDE might be a strong anti-inflammatory agent.