• 제목/요약/키워드: Marine animal

검색결과 733건 처리시간 0.024초

한국 남서 연안에 서식하는 어류상 (Fishes of the Southwestern Coast of Korea)

  • Ik-Soo Kim;Seung Ho Choi
    • Animal Systematics, Evolution and Diversity
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    • 제14권2호
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    • pp.135-157
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    • 1998
  • 우리 나라 남해 서부 연안에서 1996년 4월부터 1997년 3월까지 월 1회 어류를 조사하여 19목 82과 149속 190종을 채집하였다. 그 가운데 농어목은 94종이 출현하여 전체 출현종의 49%를 차지하였다. 채집된 어류중 두줄망둑 Tridentiger trigonocephalus, 실양태 Repomucenus valenciennei 및 풀반댕이 Thryssa adelae가 가장 우세하게 출현하였다. 또한 황해고유종인 왜도라치 Chirolophis wui, 흰베도라치 Pholis faugi, 참돛양태 Repomucenus koreanus, 비늘흰발망둑 Acanthogobious luridus 등이 출현하여 이 지역은 황해의 영향권에 있음을 알 수 있었다.

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Morphological study of a horsehair worm, Gordius sp. (Nematomorpha: Gordiida), passed in canine feces

  • Hong, Eui-Ju;Ha, Na-Ri;Ryu, Si-Yun;Chae, Joon-Seok;Kim, Hyeon-Cheol;Park, Jinho;Choi, Kyoung-Seong;Yu, Do-Hyeon;Park, Bae-Keun
    • 한국동물위생학회지
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    • 제39권4호
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    • pp.271-276
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    • 2016
  • Horsehair or gordian worms (Nematomorpha) were identified with 22 genera (Gordiida) and 5 marine species (Nectonema) until now. During juvenile phase in development, they gain parasitic activity in arthropods. In this study, a gordian worm was detected in the feces of a dog living in Nonsan-si, Chungcheongnam-do, Korea. Using this worm, we evaluated the morphological characteristics by light microscopic analysis. Furthermore, the morphological classification was re-evaluated by scanning and transverse electron microscopes. The worm was determined that it is male adult having a bi-lobed tail and male gonads in cross sections. Based on the morphological characteristics including cross sections of body and areole on the cuticle, the parasite was also identified as Gordius sp. (Nematomorpha: Gordiidae).

The Effect of Cortisol on Proliferative Properties of Flounder (Paralychthys Olivaceus) B Lymphocytes

  • Choi, Sang-Hoon;Oh, Chan-Ho
    • Animal cells and systems
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    • 제7권1호
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    • pp.57-62
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    • 2003
  • Flounder B lymphocytes isolated from different tissues were studied in terms of cell proliferation, apoptosis and the effects of cortisol on these processes. B lymphocytes, isolated from the flounder head kidney and spleen, were characterized by higher proliferation and lower intracellular calcium ($Ca^2$) response to lgcrosslinking compared with peripheral blood B lymphocytes. Cortisol induced high levels of apoptosis (150% of control levels) in peripheral blood B lymphocytes, in combination with a stimulatory LPS signal. Head kidney and to a lesser extent spleen B lymphocytes, although less sensitive than their equivalent in peripheral blood, underwent cortisol-induced apoptosis irrespective of extra stimulation up to 142% of control levels. Also proliferation with and without LPS stimulation was suppressed by cortisol (compared to plasma values measured during stress conditions) that is effective in inducing a significant increase in apoptosis in all three populations of B-cells, suggesting that cortisol may be important for immunoregulation in both stressed and non-stressed conditions. This implies possible severe impact of stress on lymphocyte development and activity, Different sensitivity of B-cells to the corticosteroid, with respect to developmental stage and activity, may prevent excessive and long lasting depletion of B-lymphocytes.

Characterization of B- , T- , and NK-like Cells in Nile Tilapia (Oreochromis nilotica)

  • Choi, Sang-Hoon;Oh, Chan-Ho
    • Animal cells and systems
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    • 제4권4호
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    • pp.341-345
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    • 2000
  • It has been very difficult to develop and evaluate efficient fish vaccines because fish immune cells have not been properly characterized. In this study, we investigated the cell-mediated immunological properties of B- and T-like cells in Nile tilapia (Oreochromis nilotica). Surface immunoglobulin negative ($slg^{-}$) cell population proliferated in response to mammalian T-cell mitogens PHA and Con A, while surface immunoglobulin positive ($slg^{+}$) cells responded to the B-cell mitogen LPS. The slg$^{[-10]}$ cells from hemocyanin (HC)-immunized Tilapia, compared to the non-immunized control, reacted more to PHA than to Con A. Unexpectedly, antigen (Ag)-specific response was observed in both $slg^{-}$ and $slg^{-}$cells. Regardless of HC immunization, whole leukocytes from 8 head kidney of fish showed natural killer (NK)cell activity. Especially, NK cell activity was much higher in slg$^{[-10]}$ cells than in slg$^{+}$cells, indicating the possibility that fish NK cells were not at least associated with slg$^{+}$ cell population and not activated by Ag. Further understanding of functional fish immune cells will help to evaluate and develop effective vaccines for fishes and to monitor the course of therapy In infected fishes.hes.

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한국 해안 Ampithoidae 과 옆새우 류( 갑곡강;서각목) (Marine Gammaridean Amphipoda (Crustacea) of the Family Ampithoidae from Korea)

  • 김훈수;김창배
    • Animal Systematics, Evolution and Diversity
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    • nspc2호
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    • pp.107-134
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    • 1988
  • 1973년 7월부터 1987년 10월까지 한국연안의 32개 지역에서 채집되어 서울 대학교 자연대 동물학과에 보관되어 있던 옆새우류의 표본중에서 Ampithoidae 에 속하는 것들올 동정힌 결과 3속 12종이 밝혀졌다. 이 중에서 5종은 신종이므로 각각 Ampithoe breviPalma, Ampithoe koreana, Ampithoe youngsanensis, Peramphithoe baegryeongensis, Peramphithoe namhaensis 라고 명명 하고 기재하였다. Ampithoe valida의 동종이명으로 처리되던 Ampithoe shimizuensis를 AmPithoe valida와 구별하여 새로운 아종인 Ampithoe valida shimizuensis로 명명하였다. 이외에 4종은 한국 미기록종 이었다.

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김치 종주국 논란의 배경과 진실, 그리고 대응 방안 - 김치의 탄생과 변화 과정 및 독특성을 중심으로 - (The Background and Truth of the Controversy over kimchi Suzerainty, And Countermeasures - Focusing on the Birth, Process, and Uniqueness of kimchi -)

  • 김홍렬
    • 한국식생활문화학회지
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    • 제36권3호
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    • pp.274-283
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    • 2021
  • What is the origin of kimchi and what changes did it go through to become the kimchi of today? Also, what makes kimchi different from other pickled vegetables such as Chinese paochai, Japanese tsukemono, and Western pickles, and sauerkraut, and what is the identity of kimchi? This study is the result of thought on these fundamental questions about kimchi which is the only pickled vegetable distributed around the world that uses a fermented and ripened animal seasoning called jeotgal (salted marine life) to dramatically improve its umami taste and nutritional value, thereby securing its uniqueness. Kimchi has further evolved into a unique and high-quality pickled vegetable through the use of its specialized seasoning, adopting a composite fermentation mechanism and absorbing new ingredients such as red pepper. It is expected that this paper will invigorate the discussion on the firm establishment of the identity of kimchi and the future direction that it may take.

Clinical Study on Skin Improvement Effect in Adult Women of Age 40 to 50 Using Cosmetics Containing Sea Cucumber Extract

  • Kim, Yong-shin;Moon, Ji-sun
    • 한국응용과학기술학회지
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    • 제36권1호
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    • pp.113-124
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    • 2019
  • The purpose of the study was to investigate the effects of sea cucumber extract on skin as a natural cosmetics functional material. Subjective evaluation of cosmetics before and after were conducted with questionnaires regarding moisture content, sebum content, melanin index, and erythema index. Experiments were conducted on improvement efficacy using skin clinical trials and questionnaires to evaluate changes in perception of skin condition and efficiency of products. With the aim of minimizing skin irritation, the efficiency of the solvent used for extraction was an important factor, and the sea cucumber extract was harvested with efficient extraction conditions at a ratio of 1:10 of 50% ethanol. The study aimed to identify the suitability of sea cucumber extract as a functional cosmetics material to improve the moisturizing ability of skin and its effect on the skin by adding marine natural animal sea cucumber extract. Clinical studies on cosmetics skin containing sea cucumber extract, excellent skin improvement effect from all items of clinical experiment in experimental and control groups. Sea cucumber extract was proved to be a stable, non-adverse physiologically active substance against abnormal symptoms or side effects of skin reactions and skin problems. In addition, the study found excellent results that can lead to its use as a cosmetics material. This is expected to contribute to the development of various cosmetics industries.

우리나라 남해도에서 채집된 실고기과 한국 첫기록종, Hippichthys penicillus (First Record of the Beady Pipefish, Hippichthys penicillus (Gasterosteiformes: Syngnathidae) from Namhaedo Island, Korea)

  • 조현근;김병직
    • 한국어류학회지
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    • 제33권3호
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    • pp.196-201
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    • 2021
  • 인도-서태평양산 실고기, Hippichthys penicillus 1개체(표준체장 124.5 mm)가 우리나라 남해도의 동대만으로 유입되는 소하천 하구에서 처음 출현하였다. 본 종은 주둥이가 비교적 길며, 직선형의 몸통 측면 융기선이 꼬리 융기선과 연결되지 않고 항문 앞에서 끊기는 점 등에서 같은 속의 다른 종들과 구별된다. 본종의 신한국명으로 '흰점실고기'를 제안한다.

Copepods (Cyclopoida) Associated with Compound Ascidians (Tunicata) from Korea, with Descriptions of Nine New Species

  • Lee, Jimin;Kim, Il-Hoi
    • Animal Systematics, Evolution and Diversity
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    • 제38권4호
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    • pp.167-198
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    • 2022
  • Ten species of copepods, including nine new species, associated with compound ascidians are recorded from Korean waters. Nine new species can be characterized by their major diagnostic features, as follows: Botryllophilus pentamerus n. sp. by having a five-annulated abdomen; B. paucisetatus n. sp. by the presence of four and three setae on the exopods of right and left leg 1, respectively; Haplostoma quadridens n. sp. by the presence of four lobes on the labrum and one seta plus four spines on the exopods of legs 1-4; H. paucidens n. sp. by the presence of only two spines on the distal segment of the antenna; Enterocola horridus n. sp. by having five setae on the antenna, no seta on the caudal ramus, and two setae on leg 5; E. longicaudatus n. sp. by having long caudal rami which are more than three times as long as wide; Thoracodelphys bisetata n. sp. by the presence of only two setae on the basis of the maxillule; T. cerasta n. sp. by the presence of a large, horn-like process on the distal margin of the basis of leg 2; and Unimeria hirsuta n. sp. by having three setae on the terminal segment of the maxilla. Zygomolgus didemni (Gotto, 1956) previously known only from European waters is reported from Korean waters, with a redescription and illustrations.

우리나라 제주도 남부 연안에서 채집된 망둑어과 한국첫기록종, Gnatholepis cauerensis (First Record of the Eyebar Goby, Gnatholepis cauerensis (Perciformes: Gobiidae) from Jejudo Island, Korea)

  • 조현근;김병직
    • 한국어류학회지
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    • 제34권1호
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    • pp.64-70
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    • 2022
  • 우리나라 제주도 남부 연안의 수심 12~16 m에서 채집된 4개체(36.3~47.1 mm in SL)의 표본들을 근거로 망둑어과 어류, Gnatholepis cauerensis을 한국첫기록종으로 보고한다. 본 종은 몸의 대부분이 빗비늘으로 덮여 있지만, 뺨과 아가미뚜껑, 그리고 등지지느러미 앞 중앙 부분은 둥근비늘로 덮여 있는 점, 가슴지느러미 기부 위에 가장자리가 검정색인 노란색 반점과 눈 아래의 흑색 가로줄무늬가 있는 것이 특징이다. 본 종의 신한국명으로 '검은눈띠망둑'을 제안한다.