Infection Experiment of the Glochidium of a Freshwater Pearl Mussel, Hyriopsis (Limnoscapha) myersiana (Lea, 1856)

  • PANHA Somsak
    Department of Biology, Faculty of Science, Chulalongkorn University

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  • 淡水産真珠貝 Hyriopsis (Limnoscapha) myersiana のグロキヂウムの感染実験
  • 淡水産真珠貝Hyriopsis(Limnoscapha)myersianaのグロキヂウムの感染実験〔英文〕
  • タンスイサン シンジュガイ Hyriopsis Limnoscapha mye

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Abstract

Infection experiment of the glochidium of a freshwater pearl mussel, Hyriopsis (Limnoscapha) myersiana in 11 species' of fish was carried out, using 4 levels of glochidia concentration. The mortality of the fish after infection was plotted against these exposure levels. After 30-days, the interpolated LE_<50> values (exposure concentration of glochidia that killed 50% of the fry) for Iridescent mystus (Mystus vittatus), Striped catfish (Pangasius sutchi), and Yellow mystus (M. nemurus), were 15, 000, 20, 000, and 50, 000, respectively. The mortalities were very low in Striped tiger nandid (Pristolepis fasciatus) and Temminck's kissing gourami (Helostoma temmincki). The most resistant were Sand goby (Oxyeleotris marmoratus) and Striped tiger nandid (Pristolepis fasciatus), which also gave the highest production of juveniles. Species of Rasbora were not resistant at all, and all specimens died soon after infection.

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