• Title/Summary/Keyword: molluscs

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The Study on the Aluminum Content in Fishes Caught from Several Areas of the West Coast in Korea (수산식품 중 노인성 퇴행성 질환과 관련된 알루미늄 함량 및 그에 따른 수산식품의 이용방안에 관한 연구)

  • 김애정
    • Journal of the East Asian Society of Dietary Life
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    • v.7 no.4
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    • pp.512-518
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    • 1997
  • This study was performed to determine the amount of aluminum, which is one of the factors of Alzheimer's disease, In some fishes caught from some areas of the west coast in Korea. The 46 aquatic products were composed of fishes, molluscs, and salt-fermented products (jeot-gal). The 24 fishes were Hickory shad, Gobies, Pomfref, Atkafish, Flounder, Jambeng-ie Monk fish, Yellow hair tail, Mackerel, Bartailed flathead, Alaska pollack, Brown croaker, Eel, Fine-spotted flounder, Black spotted grouper, Sea-eel, Pacific saury, Areliscus honaleus, Small boil-dried anchovy, Croaker, Hair tail, Sea bream genuine, Motleystrip rainbowfish, and Bastard halibut. The 15 Molluscs were Whip-arm octopus, Sea arrow, Common squid, Han chi, Cuttle fish, Turban shell, Pond snail, Orient calm, Surf calm, Butter calm, Crib shell, Oyster, Egg cockle, Little neck calm, and Arkshell. The 7 salt-fermented products were salt-fermented Shrimp, Little neck, Oyster, Shad, Gonjeng-ie, Hqangsegi, and Squid. All of them were ashed with 5$m\ell$ HNO$_3$ and then with 10$m\ell$ ternary solution (HNO$_3$ : H$_2$SO$_4$ : HClO$_4$= 10 : 1 : 4). After ashing of the samples, the aluminum amount were measured by ICP. The aluminum amount of molluscs was significantly higher than that of fishes and salt-fermented products(p<0.01). The aluminum amount of Orient calm and Healak in molluscs were 827.70, 812.55ppm, respectively, which were the most amounts compared nth that of the other samples. But the aluminum amounts of Bartailed flathead and Sea bream, genuine In fishes were 0.98, 0.97ppm, respectively, which were the least amounts compared with that of other samples. This study was limited within 46 aquatic samples, therefore I hope there will be wider efforts to determine about auminum amount in broade range of aquatic foods for the prevention of Alzheimer's disease.

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Marine Molluscs of Saemanageum (새만금의 해산 연체동물상)

  • Kil Hyun-Jong;Choi Mi-Ae;Choe Byung-Lae
    • Korean Journal of Environmental Biology
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    • v.24 no.1 s.61
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    • pp.19-28
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    • 2006
  • A survey was carried out two times at 11 localities on the marine molluscan fauna of Saemangeum during the periods from August 3rd to August 5th, and from August 23rd to August 25th 2003. The total number of molluscan species identified in this study was 88 species in 40 families, and among them 51 species in 34 families include Eurytrochus cognatus were new to the fauna of Saemangeum. In addition to the previously described 58 species in 31 families, a total of 109 species in 48 families of marine mollusca have been reported at Saemangeum up to date.

Endobiotic microalgae in molluscan life

  • Sokolnikova, Yulia
    • Fisheries and Aquatic Sciences
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    • v.25 no.10
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    • pp.499-516
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    • 2022
  • Endobiotic microalgae inhabit various groups of organisms, including bivalves. In this group, the association between the giant molluscs Tridacna and Symbiodinium is one of the most recognizable. This consortium allows hydrobionts to survive in oligotrophic waters by regulating their metabolism. The available research has provided an understanding of the interaction and adaptation of these symbionts, but the problem of the beginning of the formation of these relationships remains unresolved. In the case of Tridacninae, symbiosis is essential for the survival of bivalves, in contrast to representatives of the Mytilidae and the Coccomyxa found in them. A few works devoted mainly to the morphological aspects of invasion have shown that endobiont causes inflammation and pathology. Having data to clarify the exact "diagnosis" of the interaction of these organisms is not enough. It is possible that the relationship between bivalves and Coccomyxa is in the early stages of being established, which may lead to mutualism or parasitism in the future. We assume that the analysis of works on the symbiosis of Symbiodinium and bivalves will facilitate the course of research for the less studied Coccomyxa and their hosts. By postulating the Coccomyxa represent a unique evolutionary model for the formation of a symbiotic system, it is possible to use this system to study the interaction of organisms during their initial contact. The identified signalling pathways and mechanisms that allow the photobionts to evade host immunity can be useful for constructing new forms of symbiosystems.

Feeding Habits of Lycodes tanakae in the Coastal Waters of the middle East Sea, Korea (동해 중부연안 벌레문치(Lycodes tanakae)의 식성)

  • Choi, Young Min;Yoon, Byoung Sun;Kim, Hyo Seon;Park, Jeong Ho;Park, Kie Young;Lee, Jae Bong;Yang, Jae Hyeong;Sohn, Myoung Ho
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.46 no.6
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    • pp.843-850
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    • 2013
  • The feeding habits of Lycodes tanakae Eelpout were studied with 722 specimens collected from March 2011 to December 2012 in the coastal waters of the middle East Sea. The main prey of L. tanakae were fish, molluscs and arthropods. Nevertheless annelida, echinodermata and others were found in small amounts in the stomach contents. The L. tanakae stomach was empty of contents in 50.9% of specimens. While smaller size specimens of L. tanakae (less than 40 cm) fed mainly on euphausiids and amphipods, the larger specimens (more than 40 cm) fed on the fish Allolepis hollandi and Icelus cataphractus, and the molluscs Berryteuthis magister and Watasenia scintillans. The main prey items of L. tanakae varied seasonally. The fish Lycodes nakamurai was the dominat prey from November to January during its spawning season. Euphausiids and amphipods of the arthropods were the dominant prey from February to April. The molluscs Berryteuthis magister and Watasenia scintillans were the dominant prey from May to September. The diversity index (H') of diets showed variations by length class and month; the highest values were 2.61 in the length class of 51-55 cm, and the monthly highest were 2.68 in September with 23 species and 2.65 in November with 18 species. The highest dominance index (D') of diets was 0.57 in the length class of 31-35 cm, and the monthly highest was 0.71 in February. Cluster analysis divided prey groups into four groups by length class and three groups by monthly prey items. The gonad index gradually increased during the process of maturation while, contrary, stomach content index decreased during this period.

A report of three unrecorded Ellobiid species (Gastropoda, Eupulmonata) from Korea

  • Lee, Jun-Sang;Lee, Yong-Seok
    • The Korean Journal of Malacology
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    • v.31 no.4
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    • pp.323-326
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    • 2015
  • Three species of Ellobiid molluscs collected from Korea were identified as Auriculastra duplicata (Pfeffer, 1854), Laemodonta siamensis (Morelete, 1875) and Melampus (Pira) flavus (Gmelin, 1791). This is the first record from the Korea, providing a description of the species with illustration for the shell morphology. Including the new recorded in this study, the family Ellobiidae contained six genera and 13 species in the Korea.

Korean Names of Molluscs in Korea (한국산 연체동물의 우리말 이름)

  • 제종길
    • The Korean Journal of Malacology
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    • v.S1 no.1
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    • pp.1-105
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    • 1989
  • 연체동물 우리말 사용에 따른 혼란을 해결하고, 한국산 연체동물 총목록 작성의 예비연구로써 이미 국내에 보고된 분류군의 우리말 이름을 수집, 조사하였다. 우리말 이름을 가진 종은 무판류 1종, 군부류 16종, 복족류(고둥류)500종, 이매패류(조개류) 226종, 굴족류 4종, 두족류 34종으로 모두 781종이었다. 그리고 우리말 이름의 어원과 조사결과 나타난 문제점을 제시하고, 우리말 이름의 통일 작업이나 제정에 필요한 원칙을 제언한다.

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Korean Names of Foreign Shells Introduced to Korea (국내도입 외래 연체동물 패각의 우리말 이름)

  • Lee, Jun-Sang;Min, Duk-Ki
    • The Korean Journal of Malacology
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    • v.23 no.1
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    • pp.105-154
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    • 2007
  • We have investigated introduced foreign molluscs into Korea since 1993. A total of 2,338 species of 157 families were investigated. Among them, 2,013 species of 106 families were gastropods, 307 species of 44 families were bivalves, nine species of two families were scaphopods, and nine species of four families in cephalopods. 2,128 species were newly given Korean name.

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