Development of an Inventory Measurement Method Using the Activity Sounds of the Shrimp

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K15591
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 40030:Aquatic bioproduction science-related
• Research Institution: Fisheries Research and Education Agency
• Principal Investigator: Yasuda Kenji 国立研究開発法人水産研究・教育機構, 水産技術研究所(神栖), 研究員 (40866696)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: クルマエビ養殖 / 生活音 / 尾数計測

Outline of Final Research Achievements

In this study, we developed an automatic acoustic data identification system for the development of inventory monitoring in shrimp aquaculture by acquiring sounds associated with shrimp activities such as diving sand, swimming, and feeding. The timing of mass shipment, when it is important to know the inventory, was investigated, and shrimp of the size for shipment during the year-end and New Year's holidays were set as the size of shrimp to be used in the test.
Next, since shrimp are active at night, we constructed an experimental rearing system using an infrared camera and red light so that the shrimp could be recorded and monitored at night without being overloaded. Using this system, we measured data by changing the tank size and the number of shrimp in the aquarium. From the acquired data, teaching data was created and automatic identification of activity sounds was developed.

Free Research Field

水産工学

Academic Significance and Societal Importance of the Research Achievements

クルマエビ養殖において自動で尾数の計測は極めて困難である。そのため、活動音を検知できればエビの位置や尾数を推定することが可能になる。そのため、今までは潜水して直接的に数や残餌の計測をしていたが、本研究が進めば高齢化が進んでいる養殖業において労働力の大幅な削減が期待できる。