Title:
METHOD FOR ENHANCING SURVIVAL RATE AND/OR GROWTH RATE OF FISH AND METHOD FOR TRAINING FISH PREVIOUSLY TO RESPOND TO CERTAIN ACOUSTIC SIGNAL IN WATER
Document Type and Number:
Japanese Patent JPH07107880
Kind Code:
A
Abstract:
PURPOSE: To improve the survival rate or growth rate of young fish and to improve the survival rate of grown fish by periodically distributing bait from a feeder and generating acoustic signals at prescribe frequency by operating an acoustic projector at the time coincidental with the time to feed bait. CONSTITUTION: A feeder 12 is provided for periodically distribute bait to young fishes 11 or the like in submarine environment 10, and an acoustic projector 14 is installed for generating acoustic signals within the frequency range from 10 Hz to 4 RHz in the water so as to stimulate fishes. Any frequency suitable for training fishes to respond is selected, and acoustic signals at the selected frequency are generated by operating the acoustic projector at time matched with the time to distribute bait from the feeder.
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Inventors:
POORU ETSUCHI PATORITSUKU
JIYANUSU JIEE KOWAARUUSUKII
EDOWAADO EE MATSUKUREOTSUDO
AREKUSANDAA SAKUTA
MAIKERU BII KORUBAATO
JIYANUSU JIEE KOWAARUUSUKII
EDOWAADO EE MATSUKUREOTSUDO
AREKUSANDAA SAKUTA
MAIKERU BII KORUBAATO
Application Number:
JP7697694A
Publication Date:
April 25, 1995
Filing Date:
April 15, 1994
Export Citation:
Assignee:
ONTARIO HYDRO
International Classes:
A01K15/02; A01K79/02; A01K61/02; (IPC1-7): A01K61/02
Domestic Patent References:
| JPH03292836A | 1991-12-24 |
Attorney, Agent or Firm:
Masao Okabe (9 others)