Spatiotemporal distribution characteristics of small pelagic fish in the Northwest Pacific Ocean in summer of 2023 based on acoustics methods

doi:10.12024/jsou.20240504565

Home > Archive>Volume 34, Issue 2, 2025 >394-402. DOI:10.12024/jsou.20240504565

Spatiotemporal distribution characteristics of small pelagic fish in the Northwest Pacific Ocean in summer of 2023 based on acoustics methods
DOI:
                        10.12024/jsou.20240504565
                    
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                        LYU ShuoLYU Shuo
College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China
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TONG JianfengTONG Jianfeng
College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China;National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China;Key Laboratory of Sustainable Utilization of Oceanic Fisheries, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China
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ZHU ZhenhongZHU Zhenhong
College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China
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XUE MinghuaXUE Minghua
College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China
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QIU YueQIU Yue
College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China
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LI BoxuanLI Boxuan
College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China
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LIU BilinLIU Bilin
College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai 201306, China;National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai 201306, China;Key Laboratory of Sustainable Utilization of Oceanic Fisheries, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China
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Clc Number:S932.4
Fund Project:National Key R&D Program of China (2023YFD2401302, 2019YFD0901401)

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Abstract:

Small pelagic fish are important fishery resources in the Northwest Pacific, and their resource fluctuations can have a significant impact on the structure and function of the marine ecosystem. In order to understand their spatial and temporal distribution characteristics and resource status, this study is based on the 2023 acoustic survey data, combined trawl sampling to analyze the spatial and temporal distribution of small pelagic fish resources in the Northwest Pacific in summer 2023. The results showed that trawl catch species mainly included European pilchard （Sardina pilchardus）, Japanese anchovies （Engraulis japonicus）,Chub mackerels （Scomber japonicus）, Australian mackerels （Scomber australasicus）, and lanternfish （Myctophidae）with average resource densities of 166.82 t/n mile², 0.078 t/n mile², 18.13 t/n mile², 2.76 t/n mile²and 0.769 t/n mile², respectively.The study showed that small pelagic fish exhibited higher resource densities in low-latitude waters, primarily at the confluence of the Kuroshio Current and Oyashio Current. Vertically, they were mostly concentrated in the 10-50 m water layer. The nautical area scattering coefficient in night was significantly higher than daytime （P<0.001）.This research provides valuable scientific insights for sustainable development and management strategies for small pelagic fish resources in the Northwest Pacific Ocean.

Key words:small pelagic fish;spatiotemporal distribution;fishery acoustics;Northwest Pacific Ocean

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吕硕,童剑锋,朱振宏,薛铭华,邱悦,李柏萱,刘必林.基于声学的2023年夏季西北太平洋小型中上层鱼类时空分布[J].上海海洋大学学报,2025,34(2):394-402.
LYU Shuo, TONG Jianfeng, ZHU Zhenhong, XUE Minghua, QIU Yue, LI Boxuan, LIU Bilin. Spatiotemporal distribution characteristics of small pelagic fish in the Northwest Pacific Ocean in summer of 2023 based on acoustics methods[J]. Journal of Shanghai Ocean University,2025,34(2):394-402.

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Received:May 29,2024
Revised:October 21,2024
Adopted:November 12,2024
Online: March 13,2025
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