Particle Transport on the Gills of the Pearl Oyster, Pinctada fucata martensii.

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  • アコヤガイのえらでの粒子運搬
  • アコヤガイの鰓での粒子運搬
  • アコヤガイ ノ エラ デ ノ リュウシ ウンパン

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Abstract

The aspect of particle transport on the gills of the pearl oyster, Pinctada fucata martensii, was observed by using video camera and recorder. The velocities of the particle transport of marine chlorella, Nannochloropsis sp., were measured on the primary filament (PF), the ordinary filament (OF), the marginal ciliated groove (MG) and the basal ciliated tract (BT) at 12°C, 20°C and 28°C. There were two routes of the transport of the particle to the labial palp; through BT from PF and through MG from OF In case of high density (20 ppm), particle was caught in the gill surface, and strings was formed on MG, carried to the labial palp and processed into globule. The strings and globules were carried out into mantle cavity by the foot. The velocities of particle transport were almost same in PF, OF and MG. The velocity in BT was 2-3 times faster than those. In all positions, the velocities at 28°C were 3-4 times faster than those at 12°C.

Journal

  • Aquaculture Science

    Aquaculture Science 50 (3), 309-314, 2002

    Japanese Society for Aquaculture Science

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