• Title/Summary/Keyword: Biomphalaria glabrata

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Sublethal Exposure of Biomphalaria glabrata and Indoplanorbis exustus Eggs to Crude Extracts of Brassaia actinophylla and Niclosamide (Biomphalaria glabrata와 Indoplanorbis exustus 충란에 대한 Brassaia actinophylla 추출물과 Niclosamide의 아치사 처리)

  • Wangsomnuk, P.;Kruatrachue, M.;Upatham, E.S.
    • The Korean Journal of Malacology
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    • v.14 no.2
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    • pp.85-90
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    • 1998
  • The effects of methanol extracts of plant molluscicide, Brassaia actinophylla (Araliaceae) had been assessed on development of eggs f snails, Biomphalaria glabrata and Indoplanorbis exustus at sublethal concentrations. Results revealed that the administration of 10mg/l of B. actionophylla caused some alterations in embryos of both species. Niclosamide (0.004 mg/l) also arrested the development of embryos in B. glabrata ans I. exustus. It can be concluded that B. actinophylla has a potential use as an avicidal agent in the control of the snail intermediate hosts of schistosomiasis.

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Biomphalaria glabrata (Pulmonata: Planorbidae): A Potential Second Molluscan Intermediate Host of A Human Intestinal Fluke, Echinostoma cinetorchis (Trematoda: Echinostomatidae)

  • Chung, Pyung-Rim;Younghun Jung;Joo, Chong-Yoon
    • The Korean Journal of Malacology
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    • v.17 no.1
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    • pp.57-61
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    • 2001
  • The present study examines the potential involvement of Biomphalaria glabrata, a known molluscan intermediate host of Schistosoma mansoni, in the life cycle of Echinostoma cinetorchis, one of the echinostomes that are ubiquitous parasites of vertebrates and are of importance in human and veterinary medicine and wildlife diseases. Echinostomes can be maintained easily and inexpensively in the laboratory and provide good models for biological research ranging from the molecular to the organismal. In the present study, no echinostome cercariae were released from the B. glabrata experimentally infected with E. cinetorchis miracidia, whereas all the Biomphalaria snails infected with E. cinetorchis cercariae were found to be infected with the metacercariae. This is the first report that B. glabrata can experimentally serve as the second intermediate host of E. cinetorchis, and that it might be employed as one of the target molluscs for establishing a biological research model with E. cinetorchis in the laboratory.

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Current Status of Genome Research in Phylum Mollusks (연체동물 유전체 연구현황)

  • Bang, In-Seok;Han, Yeon-Soo;Lee, Jun-Sang;Lee, Yong-Seok
    • The Korean Journal of Malacology
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    • v.26 no.4
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    • pp.317-326
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    • 2010
  • The availability of fast and inexpensive sequencing technology has enabled researchers around the world to conduct many genome sequencing and expressed sequence tag (EST) projects of diverse organisms. In recent years, whole genome projects have been undertaken to sequence ten species from the phylum Mollusca. These include Aplysia californica, Lottia gigantea, Crassostrea virginica, Spisula solidissima, Mytilus californianus, Biomphalaria glabrata, Crepidula fornicata, Elysia chlorotica, Lottia scutum and Radix balthica. Additionally, complete mitochondrial genomes of 91 mollusks have been reported. In Korea, EST projects have been conducted in nine mollusk species that include Nesiohelix samarangae, Pisidium (Neopisidium) coreanum, Physa acuta, Incilaria fruhstorferi, Meretrix lusoria, Ruditapes philippinarum, Nordotis gigantea, Crassostrea gigas and Laternula elliptica. Finally, the mitochondrial genome projects from the Pacific Oyster (Crassostrea gigas) and the rock shell (Thais clavigera) have been conducted and reported. However, no systemic mollusk genome project has so far been conducted in Korea. In this report, the current status and research trends in mollusk genome study in Korea will be discussed.