• Title/Summary/Keyword: Marine mollusks

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Catalogue of the Collection of Bivalve Mollusks in the Zoological Museum, Far East State University, Vladivostok (극동대학 ( 블라디보스톡 ) 동물박물관 소장 이매패류 목록)

  • Darkina, Svetlana M.;Lutaenko, Konstantin A.
    • The Korean Journal of Malacology
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    • v.12 no.1
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    • pp.53-83
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    • 1996
  • 러시아 블라디부스톡에 위치한 극동대학 동물박물관 소장 이매패류의 목록과 주석을 기재하였다. 총 71과 520종을 기재하였는데 그 중 종의 수가 많은 과는 Arcidae, Cardiidae, Tellinidae, Unionidae, Mytilidae, Veneridae, Ostreidae, Pectinidae, and Asartidae등이다. 각 종은 lot와 표본 숫자와 함께 채집기를 기재하였으며, 모식종(type specimen)은 사진과 기재 일자 및 박물관 소장번호를 기재하였다.

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Distribution Patterns of Opportunistic Molluscan Species in Korean Waters (한국 해산 기회성 연체동물의 분포양상)

  • Seo, Jin-Young;Lee, Jun-Sang;Choi, Jin-Woo
    • Korean Journal of Environmental Biology
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    • v.31 no.1
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    • pp.1-9
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    • 2013
  • In this study, we tried to describe the distribution patterns of marine opportunistic mollusks in Korean waters where various environmental stresses have been imposed. Five opportunistic molluscan species were found from four types of disturbed benthic environments around Korea. Theora fragilis, Macoma incongrua, Musculista senhousia were typical dominant species mainly in the coastal area such as harbour regions and semi-enclosed regions where their sediments were enriched with organic matter and summer hypoxia occurred. However, in the waste dumping areas located in the Yellow Sea and southeastern shelf, small size bivalves such as Thyasira tokunagai and Raetellops pulchella were typical opportunistic species.

Stable Isotope Profiles of the Fossil Mollusks from Marginal Marine Environment: Is Carbon from the Seasonal Methanogenesis?

  • Khim, Boo-Keun;Bock, Kathy-W.;Krantz, David-E.
    • Journal of the korean society of oceanography
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    • v.32 no.2
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    • pp.63-68
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    • 1997
  • Stable isotope profiles with fine-scale resolution were constructed from the fossil mollusk shells, Mercernaria mercernaria, obtained from the late Pleistocene transgressive deposits of Gomez Pit, Virginia, USA. Incremental sampling were made along the axis of maximum growth to provide high-resolution ${\delta}^{18}$O and ${\delta}^{13}$C records. The ${\delta}^{18}$O shell profiles exhibit a series of pronounced cycles in the overall amplitude, corresponding to strong seasonal variations in temperature, which is apparently positive environmental variable. Contrasts between the patterns of ${\delta}^{18}$O and ${\delta}^{13}$C profiles reflect the relationship influencing the seasonal carbon cycling in the shallow marine environment. Positive anomalies of the ${\delta}^{13}$C values during the summer were observed to be out of phase with the ${\delta}^{18}$O profile. Such relatively heavier carbon source may be alternated due to seasonal methanogenesis during the summer. A hypothesized methane-based system may be operated in the shallow and marginal marine environment, resulting in a ${\delta}^{13}$C enriched bicarbonate pool, in which the heavier isotope seems to be incorporated to the shell carbonate.

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Study on Industralization Strategy for Efficient Reuse of Seaweed By-products (해조류 부산물의 유효이용을 위한 산업화방향 연구)

  • Kang, Jong-Ho;Kim, Woo-Soo
    • The Journal of Fisheries Business Administration
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    • v.50 no.4
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    • pp.1-9
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    • 2019
  • Seaweed by-products have been dumped into the sea and induced marine pollution. However, they can be recycled as a valuable natural resources. Approximately 240,000 tons of sea mustard and kelp by-products were estimated to be producted during the last three years. The estimate corresponds 6.7% of the total production of marine aquaculture and 14.9% of the total production of seaweeds. When adding up the by-products from fish and mollusks, approximately 1,000,000 tons of fisheries by-products were thrown out into the sea every year. A three-step strategy is required for the industralization of fisheries by-products. The first step is the construction of the processing foundation of by-products, the second is its food industralization, and the third is its recycling as raw biomaterials. The stable supply of raw materials is the prerequisite for the industralization. Thus, it is necessary to construct the refuse logistics around chief production districts and to build the processing facility and frozen storage of by-products. Cooperation among private enterprises and government investment for research and development is required the second and third steps.

Marine Mollusk Fauna of Kosrae Island, Federated States of Micronesia

  • Lee, Sang-Hwa;Park, Joong-Ki
    • The Korean Journal of Malacology
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    • v.29 no.4
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    • pp.343-376
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    • 2013
  • The Federated States of Micronesia consists of four states of Yap, Chuuk, Pohnpei and Kosrae, which are located in the West Pacific Ocean. In order to investigate molluscan fauna of Kosrae Island, field survey was made twice from 21st to 30th of January, 2011 and from 6th to 17th of January, 2012 for four localities including 10 intertidal and 14 subtidal zones of Kosrae Island. The mollusk samples collected were identified based on their morphological characteristics, comprising a total of 120 species from 30 families through this survey. In this study, we provided species list and illustrations for 120 species identified, and combined these with the previous record, resulting in a total of 208 species from 47 families in Kosrae Island.

Studies on Lectins From Marine Shells (V) - Isolation and Purification of Letin from Tapes philippinarum. (해양 패류 렉틴성분 연구 (V) - 반지락조개의 렉틴성분 분리정제에 관한 연구)

  • 정시련;김장환;전경희
    • YAKHAK HOEJI
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    • v.31 no.2
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    • pp.52-59
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    • 1987
  • The result of the screening of lectins on 28 species of marine shell fishes(mollusks) showed that 10 species (Tapes philippinarum, Cyclosunetta menstrualis, Neptunea arthritica cumingii, Omphalius pfeifferi carpenteri, Chlorostoma argyrostoma turbinatum, Chiorostoma argyrostoma lischkei, Semisulcosira corea, Neptunea polycosta, Babylonica japonica, Noverita didyma) were present hemagglutinating properties to human A, B, and O group, and animal blood erythrocytes. A new lectin from Tapes philippinarum. was isolated and partially characterized. The lectin was purified by (NH$_4$)$_2$SO$_4$ precipitation and ion exchange chromatography on DE 53 column. Six fractions were obtained from DE 53 column by salt gradient elution but only 0.3M, and 0.4M NaCl fraction had strong lectin activity. On its 0.3M NaCl fraction, purity was identified by polyacrylamide gel electrophoresis. This lectin was inhibited by N-acetyl-D-galactosamine. It seems that two kinds of lectin react as antigen by immunochemical studies.

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Review of the Shell-bearing Gastropods in the Russian Waters of the East Sea (Sea of Japan). IV. Heterobranchia

  • Gulbin, Vladimir V.;Chaban, Elena M.
    • The Korean Journal of Malacology
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    • v.25 no.1
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    • pp.71-79
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    • 2009
  • Based on investigation of archive collections of A.V. Zhirmunsky Institute of Marine Biology of the Far-Eastern Branch of the Russian Academy of Sciences (Vladivostok) and O.A. Scarlato Zoological Institute of the Russian Academy of Sciences (Saint Petersburg), as well as on the analysis of published data, the species composition of shell-bearing gastropod mollusks of the Russian waters of the East Sea (Sea of Japan), consisting of 331 species and subspecies, has been identified. The fourth part of the Review includes 46 species of Heterobranchia (Allogastropoda, Opistobranchia, and Pulmonata). Each species is assigned to a biogeographic grouping in the study area. Its type locality and habitat (depth and substrate) are also documented.

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Review of the Shell-bearing Gastropods in the Russian Waters of the East Sea (Sea of Japan). III. Caenogastropoda: Neogastropoda

  • Gulbin, Vladimir V.
    • The Korean Journal of Malacology
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    • v.25 no.1
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    • pp.51-70
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    • 2009
  • Based on investigation of collections at the A.V. Zhirmunsky Institute of Marine Biology of the Far-Eastern Branch of the Russian Academy of Sciences (Vladivostok) and Zoological Institute of the Russian Academy of Sciences (Saint Petersburg), as well as on the analysis of published data, the species composition of shell-bearing gastropod mollusks of the Russian waters of the East Sea (Sea of Japan), consisting of 331 species and subspecies, has been identified. Each species is assigned to a biogeographic grouping in the study area. Its type locality and habitat (depth and substrate) are also documented. The third part of this review includes 129 species in Neogastropoda (Caenogastropoda).

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Winter Composition and Abundance of Demersal Fishes in the Fishing Ground off Eastern Jeju Island, Korea (제주도 동부 먼바다 어장에서 겨울철에 어획된 저서생물의 분포특성)

  • KIM, Jong-Hwa
    • Journal of Fisheries and Marine Sciences Education
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    • v.29 no.1
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    • pp.297-305
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    • 2017
  • This study was analysed the species composition of demersal fishes caught by a bottom trawler, KAYA, in the winter season during 4 years and the study area was the eastern fishing ground in depth of about 110m, 40 miles eastward from Jeju Island, Korea. A total of 54 species were collected, including 40 species of Pises, 9 species of Mollusks, 5 species of Crustaces. The number of individuals and biomass of unit area was $7,978ind/km^2$ and $1,800kg/km^2$, respectively. The dominant species in winter season were Dentex tumifrons, Carangoides equula, Callanthias japonicus, Thamnaconus modestus and Pagrus major. And these also were caught every year. The ranges of the diversity index(H') were 1.97 to 2.40, the richness(R) 1.91~4.59, the evenness(E) 0.54~0.83 and the dominance(D) 0.42~0.61.

Genetic Differences of Two Wild Shortnecked Clam(Ruditapes philippinarum) Populations from the Yellow Sea Analysed by Random Amplified Polymorphic DNAs-Polymerase Chain Reaction

  • Yoon, Jong-Man;Kim, Yong-Ho
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.229-230
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    • 2003
  • Shortnecked clam is a commercially important mollusks species, which is distributed all over the Yellow Sea. Consequent of the rapid increase in seed production, there is a need to understand the genetic composition of wild shortnecked clam populations in order to evaluate exactly the latent genetic effects induced by seed production operations. Many genetic and molecular researches were made because RAPD-PCR is a simple and rapid method for determining genetic diversity and similarity in various organisms with the advantage that no prior knowledge of the genome under research is needed (Fischer et at., 2000). (omitted)

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