中国水产科学2025，Vol.32Issue(1)：48-59,12.DOI:10.12264/JFSC2024-0248
大黄鱼网箱养殖重金属废物排放的定量评价
Quantifying waste outputs of heavy-metals from large yellow croaker(Larimichthys crocea)farming and its ecological effects
摘要
Abstract
The quantitative evaluation of the heavy metal waste output from marine fish farming can provide scientific data for improving industrial planning and farming management of aquaculture.In this study,we analyzed contents of iron(Fe),copper(Cu),manganese(Mn),chromium(Cr),cadmium(Cd),and lead(Pb)in 48 samples of formulated feed and 144 samples large yellow croaker(Larimichthys crocea)whole-fish collected from six net-pen feeding trials,and determined the retention efficiency and waste outputs of the heavy-metals for the first time using a modified nutritional model that has been widely used for assessing nitrogen(N)and phosphorus(P)waste outputs of fish farming.The results showed that,the sequences were Mn(709.284 mg/kg)＞Fe(175.154 mg/kg)＞Cu(34.215 mg/kg)＞Pb(7.339 mg/kg)＞Cr(0.688 mg/kg)＞Cd(0.413 mg/kg)for the content of the heavy-metals in the feed,Fe(10.187 mg/kg)＞Mn(2.392 mg/kg)＞Cu(0.581 mg/kg)＞Cr(0.464 mg/kg)＞Cd(0.014 mg/kg)＞Pb(0.013 mg/kg)for the content of the heavy-metals in the whole-fish body,Fe(6.36％)＞Cr(5.71％)＞Cd(4.58％)＞Pb(2.90％)＞Cu(1.75％)＞Mn(0.35％)for the retention efficiency of the heavy-metals,and Mn[0.9764 g/kg fish gain]＞Fe[0.1990 g/kg fish gain]＞Cu[0.0422 g/kg fish gain]＞Cr[0.0081 g/kg fish gain]＞Pb[0.0007 g/kg fish gain]＞Cd[0.0004 g/kg fish gain]for the waste outputs of fish farming.The heavy-metal contents depended on either the heavy-metal content in the feed or the retention efficiency of the heavy metals.Fe and Cr in whole-fish bodies were mainly affected by retention efficiency of these elements,while contents of Mn,Cu,Pb,and Cd in whole-fish were mainly affected by the feed content of these elements.The waste outputs of Fe,Cu,and Mn significantly positively correlated to wastes of N and P,respectively,suggesting that the wastes of Fe,Cu,and Mn increased with the increase of wastes of N and P.Considering the critical roles of N,P,and Fe as the nutrients limiting growth of phytoplankton and primary productivity in ocean,the results indicated that waste outputs of offshore aquaculture of large yellow croaker could remarkably elevate biomass of phytoplankton and primary productivity in ocean.关键词
大黄鱼养殖/重金属废物排放量/重金属贮积效率/铁/食品安全/生态学效应Key words
large yellow croaker farming/waste output of heavy-metal/retention efficiency of heavy-metal/iron/food safety/ecological impact分类
农业科技引用本文复制引用
林路佳,王岩..大黄鱼网箱养殖重金属废物排放的定量评价[J].中国水产科学,2025,32(1):48-59,12.基金项目
国家重点研发计划项目(2020YFD0900803) （2020YFD0900803）
舟山市科技计划项目(2019C81054). （2019C81054）
