Time-series growth estimation of sea cucumbers (Apostichopus japonicus) in co-cultivation with coho salmon using time-lapse cameras in field experiments

IF 3.6 2区农林科学 Q2 AGRICULTURAL ENGINEERING

Aquacultural Engineering Pub Date : 2025-03-07 DOI:10.1016/j.aquaeng.2025.102529

Takero Yoshida , Kasumi Kogo

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引用次数: 0

Abstract

As Integrated Multi-Trophic Aquaculture (IMTA) continues to gain attention, this study investigated the co-culture of coho salmon (Oncorhynchus kisutch) and juvenile Japanese sea cucumber (Apostichopus japonicus) in Kuji Bay, Iwate Prefecture, Japan. The sea cucumbers were housed separately in box cages below the coho salmon aquaculture cages, and the growth was monitored using an underwater time-lapse camera from December 2022 to May 2023. The time-lapse camera was used to monitor the small sea cucumbers with an average body weight of 1.2 g for the initial stage. Semantic segmentation using the Segment Anything Model (SAM) was then applied to the images to separate the sea cucumbers from the background. Body weights were converted from the area of the sea cucumbers in the images. The estimated body weights were plotted over time and compared with the measured body weights. From this, a time-lapse camera can be used to roughly estimate the growth of sea cucumbers over time, which will be helpful to understand the co-cultured sea cucumbers.

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来源期刊

Aquacultural Engineering 农林科学-农业工程

CiteScore

8.60

自引率

10.00%

发文量

审稿时长

>24 weeks

期刊介绍： Aquacultural Engineering is concerned with the design and development of effective aquacultural systems for marine and freshwater facilities. The journal aims to apply the knowledge gained from basic research which potentially can be translated into commercial operations. Problems of scale-up and application of research data involve many parameters, both physical and biological, making it difficult to anticipate the interaction between the unit processes and the cultured animals. Aquacultural Engineering aims to develop this bioengineering interface for aquaculture and welcomes contributions in the following areas: – Engineering and design of aquaculture facilities – Engineering-based research studies – Construction experience and techniques – In-service experience, commissioning, operation – Materials selection and their uses – Quantification of biological data and constraints