• Title/Summary/Keyword: Mollusks

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Identification Characteristics of Gamma-Irradiated Dried Fishery and Mollusks Products Using Electron Spin Resonance Spectroscopy (ESR 분석법에 의한 감마선 조사 처리 건조어류 및 연체류의 조사 여부 판별 특성)

  • Kim, Moon-Young;Kim, Gui-Ran;Kim, Dong-Sul;Jang, Hong Keun;Kwon, Joong-Ho
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.44 no.5
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    • pp.725-731
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    • 2015
  • Electron spin resonance (ESR) analysis was conducted for eight different kinds of dried seafood products to investigate their gamma-irradiation status. The specimens consisted of 0~10 kGy-irradiated bones, which included five dried fishes (plaice, hairtail, saury, herring, and dried filefish) and three dried mollusks (beca squid, dried squid, and mitra squid) without flesh or marrow. ESR analysis showed that irradiated specimens exhibited typical asymmetric signals as compared to non-irradiated specimens. ESR signal intensities of all dried fishery samples significantly increased depending on irradiation dose, whereas hydroxyapetite radicals clearly appeared in irradiated plaice, saury, and hairtail. In comparing hydroxyapatite (HA) ratio, irradiated hairtail showed a greater hydroxyapatite-radical generation rate than plaice and saury, and the HA ratio significantly increased with elevated irradiation dose. However, all irradiated plaice and hairtail samples, including 5 and 10 kGy-irradiated saury, showed radiation-derived radicals, whereas filefish and mollusks did not. From the results, ESR spectroscopy was found to have potential to be applied for identifying irradiated plaice, hairtail, and saury, which all contained bones.

Korean molluscs as auxiliary hosts for parasites: A study of implications for pathogen transmission in a changing climate (기생충의 보조숙주로서의 한국산 연체동물 감염 실태: 기후변화에서 병원체 전파의 영향에 대한 고찰)

  • Park, Gab-Man
    • The Korean Journal of Malacology
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    • v.28 no.1
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    • pp.13-19
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    • 2012
  • To determine the status of Korean molluscs infection and relation with climate change of Korean peninsula, references were reviewed. Wild animals serve as intermediate, reservoirs and paratenic hosts to zoonotic parasites of human beings. Trematode are common parasites of molluscs and almost all trematodes infect mollusks as the first host in the life cycle, and most have a complex life cycle involving other hosts. The significance of auxiliary hosts to the ecology of the parasite has not been proper discussion. There is increasing concern as to the impact of climate change on the epidermiology of many parasitic diseases. A total of 21 species for snail transmitted parasites from Korean molluscs has been reviewed. Among them, 15 species was aquatic mollusks and 6 species for marine mollusks. Maximum infections belonged to Semisulcospira livertina had 11 kind of parasite pathogenic organisms, including Paragonimus westermani, Metagonimus yokogawai, Centrocestus armatus, Notocotylus magniovatus, Centrocestus formosanus, incerte cercaria, nipponensis cercaria, Yoshidae cercaria, cristata cercaria, innominatum cercaria and Metagonimus sp. And 11 in Parafossarulus manchouricus including Clonorchis sinensis, Asymphylodora japonica, Cyathocotyle orientalis, Exorchis oviformis, Notocotylus attenuatus, Echinochasmus japonicus, Loxogenes liberum, Cercariae of Loxogenes liberum Type I, Cercariae of Loxogenes liberum Type II, Furcocercus cercariae (Family Sanguincolidae) and Cercaria of Mucobucaris, 10 in Semisulcospira sp. including Paragonimus westermani, Metagonimus yokogawai, Centrocestus armatus, Echinochasmus redioduplicatus, Notocotylus magniovatus, Cercaria incerte, Cercaria nipponensis, Cercaria yoshidae, paludinarum cercaria and Metagonimus sp., 7 in Koreanomelania globus including Pseudexorchis major, Cercaria of parapleurolophocercous type, Metagonimus sp. (A & B), Cercaria nipponensis, Cercaria inserta and Cercaria yoshidae. Also, Tapes philippinarum have 3 pathogenic organisms including Cercariae tapidis, Cercariae furcocercus and Parvatrema sp. In particular, under climatic extremes such as floods and drought, aquatic molluscs may play a more prominent role in parasite transmission in the future.

THE OVULIDAE OF JEJU ISLAND

  • Ronald G. Noseworthy;Koh, Dong-Bum;An, Kyung-Kook;Park, Kwang-Sik
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.396-396
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    • 2003
  • Jeju Island, because of its location off the south coast of the Korean peninsula, has a varied marine mollusk fauna, As part of a continuing effort to enumerate and study the mollusks of the island, extensive SCUBA diving surveys have been done in the Sogwipo area, particularly around the islets of Munsom, Pomsum, and Supsum. (omitted)

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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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Anatomical and Ecological Characteristics of Marine Biotoxin-Bearing Mollusks (해양독소를 보유한 연체동물의 기관별 명칭과 생태학적 특성에 관하여)

  • Hong, Hyun-Ki;Kajino, Nobuhisa;Kim, Hyoun Joong;Lee, Wan Ok;Lee, Jihyun;Choi, Kwang-Sik
    • Journal of Food Hygiene and Safety
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    • v.36 no.6
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    • pp.455-473
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    • 2021
  • In order to aid the researchers who analyze the biotoxins in marine molluscs, this paper introduces the official names and ecological characteristics of the domestically produced or distributed bivalve and gastropods that can be contaminated with marine biotoxins. Also, the paper intends to inform the location and scientific name of each organ of the representative group of species through anatomical maps. In the future, it is necessary to standardize and normalize the names of the species and the research institutions in food codes, scholarly papers and reports on the marine biotoxin analysis.

Morphological Description of a Newly Recorded Strombus luhuanus (Strombidae: Gastropoda) from Korea

  • Lee, Junhee;Lee, Sang-Hwa;Park, Joong-Ki
    • Animal Systematics, Evolution and Diversity
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    • v.29 no.1
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    • pp.96-98
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    • 2013
  • The Strombus Linn$\acute{e}$, 1758 is a genus of marine mollusks belonging to the class Gastropoda, and is distributed in the tropical waters of the world. Typically, the family Strombidae includes five extant genera (Strombus, Lambis, Terebellum, Tibia, and Rimella), all of which are mostly found in tropical waters. Five individuals of Strombus luhuanus Linn$\acute{e}$, 1758 were collected from Uljin, Gyeongsangbuk-do province for the first time. In this study, we describe details of shell morphology and radula characters of the species with scanning electron microscopy images of the radula. This is a new record of Strombus luhuanus Linn$\acute{e}$, 1758 from Korean waters.

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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