The Bioaccumulation and Health Risk Assessment of Metals among Two Most Consumed Species of Angling Fish ( Cyprinus carpio and Pseudohemiculter dispar ) in Liuzhou (China): Winter Should Be Treated as a Suitable Season for Fish Angling

Yupei Hao, Xiongyi Miao, Mian Song and Hucai Zhang
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Yupei Hao: Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650500, China
Xiongyi Miao: Key Laboratory of Karst Dynamics, MNR&GZAR, Institute of Krast Geology, Chinese Academy of Geological Sciences (CAGS), Guilin 541004, China
Mian Song: Center for Hydrogeology and Environmental Geology, CGS, Baoding 071051, China
Hucai Zhang: Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming 650500, China

IJERPH, 2022, vol. 19, issue 3, 1-15

Abstract: Wild fish caught by anglers were validated to be commonly polluted by metals, but their contamination status could be varied with changing seasons. To determine the seasonal variation in metal pollution and health risks in these fish, this study took Liuzhou City as an example to investigate the concentrations of eight metals in two dominant angling fishes ( Cyprinus carpio and Pseudohemiculter dispar ) collected, respectively, in winter and summer. The obtained results suggested the mean concentrations of metals in fish are overall lower in winter. Only Cr, Zn, and Cd in some fish were beyond the thresholds in summer. The significant correlations between fish length and weight and most metals suggested the biological dilution effect could exert its influence in winter. The similar distribution of metals in winter suggested that metal bioaccumulation should be manipulated by living habitats, while the inconsistent distribution of metals in summer may be related to the variation in feeding behavior. The metal pollution index (Pi) values were all below 0.2 in winter, which suggested no metal contamination in fish, but most fish were found to be mostly contaminated by Cr and Cd in summer, which was confirmed by their Pi > 0.2. The fish could be consumed freely in winter due to the total target hazard quotient (TTHQ) below 1, while the consumption of fish was not entirely safe in summer, particularly for children, due to TTHQ values that were generally beyond 1. Given the higher weekly recommended consumption of fish in winter, winter should be treated as a suitable season for fish angling.

Keywords: wild fish; metals; seasonal changes; health risks; Liuzhou city (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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