Hashimoto Electronic Industry Co., Ltd.

Yutaka Tamaru

Hideo Miyake

Masaru Obata

Masatoshi Hashimoto

Ryuji Uchida

It is an object of the invention to provide a method and an apparatus for processing a very large number of fish eggs for gene injection and so on with a superior performance. An egg case has an egg-arranging plate and a cover plate. The fish eggs are dropped into concave portions of the egg-arranging plate, when the cover plate opens the concave portions. The cover plates closes the concave portions after fish eggs are accommodated in the concave portions. The egg case is fixed on a table of an egg-arranging apparatus. water is supplied on the egg-arranging plate in the egg plate. A scanning nozzle sprays water on upper surface of the egg-arranging plate. After closing the concave portions with the cover plate, the egg case is inclined for dropping fish eggs remaining on the cover plate.

Method and apparatus for processing a large number of fish eggs

It is an object of the invention to provide a method for processing a very large number of fish eggs for gene injection and so on, which employs a simple system with high performance and a reasonable construction expense. It is another object to provide the method having an water tank apparatus capable of producing a large number of fish eggs continuously. A large number of water tank groups having an independent drainage passage each is lighted up in turn with a predetermined interval. An egg-collecting case with a net bottom is set in the drainage passage connecting to the water tank group to which the lighting is started. The water tank group consists of a plurality of tank unit accommodating fishes each. Each book-shaped tank unit has a rectangular-shaped upper portion and a cone-shaped lower portion. Rotating water stream is formed in each tank unit.

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Tsu, Japan

Yutaka Tamaru