• Title/Summary/Keyword: 따개비

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Biodiversity of Macrofauna at Subtidal Rocky Shore Around Uljin, Korea (울진 조하대 경성암반 해역 대형무척추동물의 생물다양성)

  • Lee, Jae Ho;Hwang, Kang Seok;Rho, Hyun Soo;Choi, Chang Geun
    • Journal of Marine Life Science
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    • v.1 no.1
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    • pp.31-40
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    • 2016
  • Macrofauna and community structure were investigated seasonally at five sites in subtidal zone of Uljin on the east coast of Korea from March 2010 to February 2013. A total of 146 species were collected and identified, including 67 molluscs, 27 arthropods, and 8,688 individuals, including 6,468 arthropods, 1,098 molluscs and 584 echinoderms. In the seasonal investigation, summer has been the highest in 96 species and 2,525 number of individuals. Site 4 was the highest species but number of individuals were the lowest (81 species with 1,377 number of individuals), whereas site 3 was the lowest species and number of individuals were the highest (45 Species with 2,213 number of individuals). These result indicate that Balanus species affected to richness and the other side a gastropod influence by diversity and evenness. And site 3 seems to be good habitate environment for Balanus as the result of 83.4% of Balanus rather than other sites.

우렁쉥이 (Halocynthia roretzi)에 의한 중금속 (Cd, Pb, Cu)의 생물축적에 관한 연구

  • 김성길;곽희상;강주찬
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.10a
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    • pp.239-240
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    • 2000
  • 산업사회의 발달로 해양생물이 살아가는 생태계는 지역에 따라 자연적인 정화 능력 이상의 많은 오염물질이 유입되고 있으며, 이는 연안 생태계 내에 살아가는 생물이나 그 생물을 이용하는 사람에게도 많은 악영향을 미치고 있다 (Johnston, 1976). 이러한 중금속의 악영향으로 인하여 중금속에 대한 생물축적을 파악하기 위하여 해양생물을 biomonitor로 활용을 하며, 대형 수생식물, 이매패류, 다모류, 따개비류 및 어류 등을 이용하여 중금속이 생물에 미치는 영향을 연구하고, 환경 평가의 기준으로 이용하고 있다 (Rainbow, 1995). (중략)

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해조류 추출물로부터 홍합(Mytilus edulis)의 부착 저해물질 정제

  • 조지영;홍용기
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.05a
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    • pp.155-156
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    • 2000
  • 연안 해역에서 해조류와 부착패류는 양식장 시설 뿐만아니라 수취구 어선바닥 등에서 그 피해는 심각한 실정이다. 해조류에 의한 부착은 잎파래 가시파래 등이 주가 되고 패류로는 홍합과 따개비가 주를 이룬다 이들의 부착방지를 위해서 염소살균, TBTO (Tributyltin oxide), CuSO$_4$등의 처리를 하고 있지만 이러한 처리에 의해서는 또다른 환경 문제가 야기되고 있다. 이같은 부착방지 물질 탐색의 일환으로 흥합을 탐색 대상종으로 선택하여 각종 해조류 추출물들로부터 부착 방지 효과를 조사하였다. 그 결과 고리매(Sytosimphon lomentaria)로부터 가장 높은 활성을 확인 하였고, TLC, silica-gel chromatography, Ion-exchange, HPLC를 통해 정제 하였다. (중략)

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원자력발전소 온배수에 따른 우렁쉥이의 성장

  • 김성길;곽희상;강주찬
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.10a
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    • pp.331-332
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    • 2001
  • 발전소 등에서 배출되는 온배수는 해수의 수은을 변화시키며, 이로 인해 해양생태계에 많은 영향을 미친다 (Naylor, 1965). 발전소 온배수에 의해 27.2$^{\circ}C$~31.$0^{\circ}C$의 수온상승은 부착성 군집구조 가 우세하며, 37$^{\circ}C$이상의 수온에서는 수주고둥 및 따개비류를 제외한 모든 동ㆍ식물이 소멸한다 (Suresh et al., 1993). 또한, Ahamed et al. (1992)는 발전소 온배수의 영향을 받는 해역에서는 소수의 수주고둥과 남조류를 제외하고 해양생물 출현이 없었다고 보고하였다. (중략)

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Spatial Species Diversity of Macrobenthos in the Intertidal Zone of Hwasoon, Jeju Islands (화순 조간대 저서 대형무척추동물의 공간적 종다양성에 관한 연구)

  • 이정재;강경철;김종철
    • The Korean Journal of Malacology
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    • v.17 no.1
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    • pp.63-70
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    • 2001
  • The distribution and seasonal changes of the intertidal macrobenthos community was performed on five intertidal rocky stations of Hwasoon at Jeju Islands September 1999 to August 2000. The macrobenthos was composed of six phyla, 13 classes, 24 orders, 49 families, and 97 species. The dominant species of the upper zones were Nodilittorina exigua, Notoacmea schrenckii, Liolophura japonica and Patelloida saccharina. Those of the middle zones were Monodonta labio, Chthamalus challengeri, Siphonalia japonica and Liolophura japonica. Those of the lower zones were Siphonalia sirius, Patelloida saccharina, Chthamalus challengeri, and Liolophura japonica. The community dominance indices of the upper zones were much higher than those of the middle and lower zones. Species diversity and evenness in all investigated zones were highest in station 1 and lowest in staton 3. But, species richness was highest in station 1 and lowest in station 4.

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Experimental Study on the Removal of Biofouling from Specimens of Small Ship Constructions Using Water Jet (물 제트를 이용한 소형선박제작 시편의 선체부착생물 제거에 관한 실험적 연구)

  • Seo, Daewon;Oh, Jungkeun
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.28 no.6
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    • pp.1078-1085
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    • 2022
  • Fouling organisms attached to a ship not only greatly increase the resistance of the ship as they grow on the hull but also cause disturbances in local marine ecosystems as they move with the ship. Accordingly, the International Maritime Organization has started discussing the removal of biofouling and evaluation of cleaning performance to prevent the migration of hull-fouling species. In this study, specimens of FRP(Fiber Reinforced Plastic), HDPE(High Density Polyethylene), and CFRP(Carbon Fiber Reinforced Plastic) materials used for small ship construction were cured in Gyeokpo Port (Jeonlakbuk-do) for about 80 days. Then, attached organism removal experiments were performed using a water jet nozzle. The results show that seaweeds, such as laver, were removed when the distance between the nozzle and the specimen was 1.8 cm and the pressure was 100 bar. Furthermore, it was confirmed that the cleaning of barnacles was possible only when the pressure was 200 bar or more.

The Effects of Protozoa on the Early Formation of Microbial Fouling Communities of Inchon Coastal Waters (인천 연안 미세오손생물 군집 형성과 원생동물의 영향)

  • Choi, Joong-Ki;Yang, Eun-Jin;Lee, Won-Je;Yoon, Won-Duk;Shim, Jae-Hyung
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.4 no.4
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    • pp.349-362
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    • 1999
  • To understand the role of protozoa in the early formation of microbial fouling community, the studies on the formation of microbial film, the succession of microbial fouling communities, and the grazing pressure on bacteria population in microbial film were carried out in the laboratory, Inchon outer port and Inchon inner harbour. Bacteria and heterotrophic flagellates formed primary microbial film on the aluminum surface within 6 hours and oligotrich ciliates were observed 2 cells $mm^{-2}$ on the same surface at 9 hours in Inchon inner harbour which had physically stagnant condition. The larvaes of Balanus albicostatus which were dominant meiobenthos in Inchon coastal area attached on the glass surface at the first day of experiment. Heterotrophic flagellates showed maximum abundance of 465 cells $mm^{-2}$ at the 13rd day and ciliates showed maximum abundance of 63 cells $mm^{-2}$ at the 11st day in the Inchon inner harbour. In the Inchon outer port which opens to the outer sea, the maximum abundance of protozoa occurred at early phase, but not so many. The dominant heterotrophic flagellates were Metrornonas simplex and Bodonids. Dominant ciliates were small tintinnids and oligotrich ciliate Strombidium sp., Large Strombidium (oligotrich ciliate) and sessile Acineta turberosa (suctorian ciliate) occurred after 10 days. The attached larvae of Balanus occurred as biofouling organism on the early surface and showed maximum abundance of 18 indiv. $cm^{-2}$ at 7th day. At that time, adult barnacles were observed on the surface and dead barnacles were observed after two days. Except barnacles, the larvaes of Anthozoa sp., Oysters (Crassostrea gigas) and Polychaeta were observed on the surface from 3rd day. 3 benthic copepods including Harpacticus sp., I isopod, 1 polychaeta and 1 gastropoda were observed as predators of the microbial film on the surface after 7 days when microbial film developed very well. Although the ingestion rates of protozoa on the bactctia of the rnicrobi31 film were relatively low, the average grazing rate of protozoa on bacteria was high of 0.058 $h^{-1}$. This implied that the grazing pressure of protozoa influences the mortality of bacteria populations on the microbial film. but protozoa cannot get enough energy from only bacteria on the microbial film.

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Systematic Studies on the Cirripeds (Crustacea) from Korea: I. Balanomorph Barnacles (Cirripedia, Thoracica, Balanomorpha)

  • Kim, Il-Hoi;Kim, Hoon-Soo
    • The Korean Journal of Zoology
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    • v.23 no.3
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    • pp.161-194
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    • 1980
  • The authors examined intertidal and sublittoral balanomorph barnacles which were collected from 38 localities in South Korea during the period from 1963 to 1978. 2. Identified and classified materials are composed of 15 species and 2 subspecies, all of which are described, under 10 genera and 5 damilies, of which 2 species and 1 subspecies are new to Korea as follows: Chelonibia patula, Chirona (Striatobalanus) amaryllis, Solidobalanus (Hesperibalanus) hesperius hesperius. 3. As dominant species, Chthamalus challengeri and Tetraclita squamosa japonica are widely distributed in Korea through East Sea, South Sea and Yellow Sea. 4. Balanus albicostatus and B. kondakovi are commonly found in intertidal brackish waters of Yellos Sea and South Sea, whereas, B. trigonus and Megabalanus rosa are typical sublittoral forms.

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The Larval Development of a Fouling Organism Balanus kondakoui Tarasov & Zevina(Cirripedia, Thoracica) (세로줄 따개비(Balanus kondakovi)의 유생발생에 관한 연구)

  • Lee, Chu;Kim, Chang-Hyun
    • The Korean Journal of Zoology
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    • v.34 no.1
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    • pp.81-92
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    • 1991
  • Nauplii and cyprid la%ae were cultured in the laboratory at a temperature of 25'c of 33 parts per thousand. La%al development includes the six nauplius and a cyprn'dstages. Morphological characteristics such as antennules, antennae and mandibles as well as the general pattern of the thoracican Cirripedia are described and illustrated. All the nauplius larvae have trilobed labra which are typical in balanoides, with numerous slender hairs. It is possible to compare the setation of larva of Balanus kondakoui with those of B. albicostatus, B. amphitrr'te, 9. trigonus, B. uariegatus, and Chthamafus rhallengerl' by plotting of numerical setation of the antennae against the mandibles.

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