浙江沿海水域石首鱼科资源量估算分析

doi:10.16535/j.cnki.dlhyxb.2024-137

PDF(6316 KB)

大连海洋大学学报 ›› 2025, Vol. 40 ›› Issue (1) : 156-165. DOI: 10.16535/j.cnki.dlhyxb.2024-137

浙江沿海水域石首鱼科资源量估算分析

金梓慧，徐开达*，张洪亮，周永东，龙翔宇，詹炜，马文静，徐菲

作者信息 +

Stock assessment of Sciaenidae fishes in the coastal waters of Zhejiang Province

JIN Zihui，XU Kaida*，ZHANG Hongliang，ZHOU Yongdong，LONG Xiangyu，ZHAN Wei，MA Wenjing，XU Fei

Author information +

文章历史 +

摘要

为了解该海域石首鱼科资源量状况，根据2019—2021年每年春季(4月)、秋季(11月)浙江近岸水域(27°00′～31°00′ N，120°30′～123°45′E)底拖网调查资料，采用扫海面积法等方法得到其优势度、生物量密度、尾数密度和现存资源量，研究了调查海区主要经济石首鱼科的季节和空间数量分布变化情况。结果表明：浙江近岸石首鱼科3年平均生物量密度为140.7 kg/km2，秋季均高于春季，且南部区域最高；调查年份现存资源量从高到低的鱼种分别为鮸(Miichthys miiuy)、银姑鱼(Pennahia argentata)和小黄鱼(Larimichthy polyactis)；与历史资料相比，资源量整体逐渐好转。本研究结果可为浙江近海渔业资源的养护技术研发和可持续利用提供基础依据。

Abstract

The coastal waters of Zhejiang Province are important breeding grounds for major economic fishes,including species of the Sciaenidae family with high nutritional value,represented by large yellow croaker (Larimichthys crocea) and small yellow croaker (Larimichthys polyactis).To assess the resource status of Sciaenidae off the coast of Zhejiang,the bottom trawling survey data were used from the coastal area of Zhejiang (27°00′-31°00′ N,120°30′-123°45′ E) collected each spring (April) and autumn (November) from 2019 to 2021.The study used the swept sea area method and analyzed the seasonal and spatial distribution of main economic fishes of the Sciaenidae family,including their dominance,biomass density,numerical density,and existing biomass.The results showed that:the average biomass density of Sciaenidae off the coast of Zhejiang over the three years was 140.7 kg/km2,with autumn values consistently higher than those in spring and the highest values ascertained in the southern area; the biomasses of species ranking from the highest to lowest in survey years were brown croaker (Miichthys miiuy),silver croaker (Pennahia argentata) and small yellow croaker (Larimichthys polyactis); there was an overall gradual improvement in resource staus compared with historical data.The study provides a detailed description of the Sciaenidae fish resource densities and distribution status.The results provide a basis for future research and the development of conservation techniques and sustainable utilization management of offshore fishery resources in Zhejiang.

导出引用

金梓慧, 徐开达, 张洪亮, 周永东, 龙翔宇, 詹炜, 马文静, 徐菲. 浙江沿海水域石首鱼科资源量估算分析[J]. 大连海洋大学学报, 2025, 40(1): 156-165 https://doi.org/10.16535/j.cnki.dlhyxb.2024-137

JIN Zihui, XU Kaida, ZHANG Hongliang, ZHOU Yongdong, LONG Xiangyu, ZHAN Wei, MA Wenjing, XU Fei. Stock assessment of Sciaenidae fishes in the coastal waters of Zhejiang Province[J]. Journal of Dalian Fisheries University, 2025, 40(1): 156-165 https://doi.org/10.16535/j.cnki.dlhyxb.2024-137

中图分类号： S 932.4