• Title/Summary/Keyword: Bivalvia

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A Rhythmicity in the rate of Oxygen Consumption by the Manila clam, Ruditapes philippinarum

  • Kim, Wan-Soo;Rumohr, Heye;Schimid, Michael K.;Koh, Chul-Hwan
    • Journal of the korean society of oceanography
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    • v.31 no.3
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    • pp.117-122
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    • 1996
  • Oxygen consumption by the Manila clam, Ruditapes philippinarum (Bivalvia: Veneridae) maintained in a culture tank for 7-10 weeks was measured with an automatic intermittent-flow-respirometer (AIFR). There was evidence for an endogenous tidal rhythm of 12.4 h in oxygen consumption, at irregular intervals of between about 7 and 18 hours during experiments of between 22 h 5 min and 70 h 32 min (duration) recording for fasting animals in constant darkness at constant temperatures in the absence of tidal rhythms.

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Two Corbicula (Corbiculidae: Bivalvia) mitochondrial lineages are widely distributed in Asian freshwater environment

  • Park, Joong-Ki;Kim, Won
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.377-377
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    • 2003
  • We investigated the biogeography of Asian Corbicula using mitochondrial gene sequence variation for Corbicula members sampled from 24 localities of 8 Asian regions. A total of 210 individuals were genetically characterized by examining sequence variations of a 614 bp fragment of the mitochondrial cytochrome oxidase I (COI) gene. Phylogenetic analyses of the COI dataset revealed that Corbicula members are subdivided into two well-supported clades: estuarine and freshwater. (omitted)

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제주연안산 소쿠리조개(Vasticardium burchardi, DUNKER)의 연령과 성장

  • 원승환;한석중;손명호;김재우;김봉래
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.05a
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    • pp.352-354
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    • 2000
  • 제주연안에 서식하는 소쿠리조개, Vasticardium burchardi(DUNKER)는 이매패(Bivalvia) 이치목(Heterodonta) 새조개과(Cardiidae)에 속하는 패류로 제주도 외에 일본 및 우리나라 동해안에 분포하고, 생태적으로는 여과섭식자로 분류된다. 제주도에서는 전 연안에 걸쳐 사니질이 형성된 곳에서는 골고루 분포하고 있으며 이들이 주로 채집되는 수심은 18m∼29m이고, 어획도구는 형망에 의해서 주로 포획된다. (중략)

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Characteristics of Shell Morphology and Distribution of 3 Species Belonging to Genus Mytilus (Mytilidae: Bivalvia) in Korea (한국산 홍합속 (Mytilus) (홍합과 : 이매폐강) 3종의 형태 특성과 분포)

  • 제종길;장창익;이수형
    • The Korean Journal of Malacology
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    • v.6 no.1
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    • pp.22-32
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    • 1990
  • 홍합감시(Mussel Watch) 연구의 일환으로 1988년과 1989년에 남한 연안의 24곳에서 홍합(Mytilus)속에 속하는 종들을 채집하였다. 채집된 표본들의 패각의 형태 특성과 분포를 조사 분석한 결과 3종-홍합, 진주담치(M. edulis galloprovincialis), Mytilus sp. 로 밝혀졌다. 이 3종은 패각의 형태에서 뚜렷한 차이를 보이고 있으며, 지리분포와 서식지 수직분포에서도 나름대로의 특성을 보여주고 있다. 지리분포에서는 수온이 수직분포에서는 종간 경쟁이 분포의 제한 요인인 것 같다.

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Studies of Development and the Spawning Season of Pisidium (Neopisidium) coreanum (Bivalvia : Sphaeriidae) (산골조개 (Pisidium (Neopisidium) coreanum)의 발생 및 산란시기에 관한 연구)

  • 박제철;권오길
    • The Korean Journal of Malacology
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    • v.9 no.1
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    • pp.33-38
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    • 1993
  • 강원도 춘천군, 명주군, 평창군에서 채집한 산골조개(pisidium (Neopisidium) coreanum)의 발생형태 및 산란시기에 대한 조직학적 결과는 다음과 같다. 산골조개는 난태생이고 아가미를 보육장으로 이용하여 발생을 하였다. 유패는 한 개체의 성패내에서 최고 19마리까지의 유패를 보유하였으며 방출 즉시 독깁 생활을 하였지만 수관의 구별은 어려웠다. 산란은 일년내내 할 수 있으며 생식소내에서 난소와 정소의 배우자 발생 시기가 다른 것으로 보아 자가수정을 하지 않는것으로 관찰되었다.

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Sakhalin-Kurile Species of Pearl Mussels (Bivalvia: Margaritiferidae) from Transbaikalye

  • Klishko, Olga K.
    • The Korean Journal of Malacology
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    • v.25 no.3
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    • pp.237-242
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    • 2009
  • Two species of pearl mussels, Dahurinaia (Kurilinaia) laevis и D. (K.) zatravkini, inhabiting fresh waters of Sakhalin, South Kurile and Japan Islands, were found in the upper Amur River drainage basin (Transbaikalye). Considerable likeness of morphological and morphometric shell characters with island species is shown. The problem of ancientorigin of pearl mussels of Transbaikalye is discussed.

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A Novel Anticoagulant Protein with High Affinity to Blood Coagulation Factor Va from Tegillarca granosa

  • Jung, Won-Kyo;Jo, Hee-Yeon;Qian, Zhong-Ji;Jeong, Young-Ju;Park, Sae-Gwang;Choi, Il-Whan;Kim, Se-Kwon
    • BMB Reports
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    • v.40 no.5
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    • pp.832-838
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    • 2007
  • A novel inhibitory protein against blood coagulation factor Va (FVa) was purified from muscle protein of granulated ark (Tegillarca granosa, order Arcoida, marine bivalvia) by consecutive FPLC method using anion exchange and gel permeation chromatography. In the results of ESI-QTOF tandem mass analysis and database research, it was revealed that the purified T. granosa anticoagulant protein (TGAP) has 7.7 kDa of molecular mass and its partial sequence, HTHLQRAPHPNALGYHGK, has a high identity (64%) with serine/threonine kinase derived from Rhodopirellula baltica (order Planctomycetales, marine bacteria). TGAP could potently prolong thrombin time (TT), corresponding to inhibition of thrombin (FIIa) formation. Specific factor inhibitory assay showed that TGAP inhibits FVa among the major components of prothrombinase complex. In vitro assay for direct-binding affinity using surface plasmon resonance (SPR) spectrometer indicated that TGAP could be directly bound with FVa. In addition, the binding affinity of FVa to FII was decreased by addition of TGAP in dose-dependant manner ($IC_{50}$ value = 77.9 nM). These results illustrated that TGAP might interact with a heavy chain of FVa ($FVa_H$) bound to FII in prothrombin complex. The present study elucidated that non-cytotoxic T. granosa anticoagulant protein (TGAP) bound to FVa can prolong blood coagulation time by inhibiting conversion of FII to FIIa in blood coagulation cascade. In addition, TGAP did not significantly (P < 0.05) show fibrinolytic activity and cytotoxicity on venous endothelial cell line (ECV 304).

Systematic study on the genus Corbicula (Bivalvia : Corbiculidae) in Korea (한국산 재첩속(Corbicula) 이매패류의 계통분류학적 연구)

  • 이준상;김종범
    • Animal Systematics, Evolution and Diversity
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    • v.13 no.3
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    • pp.233-246
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    • 1997
  • A genetic analysis using starch gel electrophoresis was performed to clarify the degrees of genetic differentiation and the phylogenetic relationships among four species of the genus Corbicula (Bivalvia, Corbiculidae). The average genetic similarity coefficients among the populations of each species on C. fluminea, C. leana and C. colorata were very closed (Rogers' S$\geq$0.970), whereas the other C. japonica was separated into two genetic groups (S=0.873) with distinct allelic difference at the Gpl locus. Thuefore additional taxonomic studies are needed on this species. On the other hand, these four species were well distinguished from each other genetically with distinct allelic differences at 4 to 9 loci. The genetic similarity coefficients (S) between C. leana and C. colorata, C. fluminea and C. leana, and C. fluminea and C. colorata were 0.737, 0.689, and 0.594, respectively. In particular, the average genetic similarity coefficients between these three species (inhabiting in freshwater) and the other C. japonica (inhabiting in brackishwater) were notably lower (S=0.370).

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