What is the star system?
The star system calculates the number of pieces that were handled by Conchology, Inc. in the last 21 years:
| 0 – 5 pieces | 6 stars |
|
| 6 – 10 pieces | 5 stars |
|
| 11 - 25 pieces | 4 stars | |
| 26 - 75 pieces | 3 stars | |
| 76 - 150 pieces | 2 stars | |
| > 150 pieces | 1 star | |
We want to point out that the star system is only very reliable for PHILIPPINE shells only, as we handle very few foreign shells in general. As time goes, the system will become more and more performant.
Shellers From the Past and the Present
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Ueda, Hajime
Biography of H. Ueda
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Shimoda Marine Research Center, University of Tsukuba - Edit
Books and Publications by H. Ueda
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1975. Nishiwaki, S.; Ueda, H.; Makioka, T. Tagging studies on the growth of the sea hare Aplysia kurodai on an intertidal rocky shore. Mar. Biol. 32:389-395. Source - Edit
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1991. Nishiwaki, Suburo, Tetsu Hirata, Hajime Ueda, Yasutaka Tsuchiya & Toshihiko Sato. Egg-laying Seasons and Monthly Change in Egg Capsule Production of Clithon retropictus (Prosobranchia: Neritidae) in the Naka River of Izu Peninsula. Venus 50(3): 197-201 Source - Edit
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1991. Nishiwaki, Suburo, Tetsu Hirata, Hajime Ueda, Yasutaka Tsuchiya & Toshihiko Sato. Studies on the Migratory Direction of Clithon retropictum (Prosobranchia: eritidae) by Marking-and-Recapture Method. Venus 50(3): 202-210. Source - Edit
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1992. Hirata, Tetsu, Saburo Nishiwaki, Hajime Ueda, Yasutaka Tsuchiya & Toshihiko Sato. Seasonal Changes in Moving Activity of Clithon retropictus (Prosobranchia: Neritidae). Venus 51(1&2): 57-66 Source - Edit
Named after H. Ueda
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Note from Tom Rice: genera used on this page are from the original discription where possible, no genera will be updated to the latest WORMS info,
as this would be an impossible task at hand. Thank you for your understanding.
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