Next Article in Journal
Dam Safety-Overtopping and Geostructural Risks
Previous Article in Journal
Study on Soil Leaching Risk of Reuse of Reclaimed Fertilizer from Micro-Flush Sanitary Wastewater
 
 
Article

Assessment of Acute and Short-Term Developmental Toxicity of Mercury Chloride to Rare Minnow (Gobiocypris rarus)

1
College of Life Science, Neijiang Normal University, Neijiang 641112, China
2
Key Laboratory of Conservation and Utilization of Fish Resources, College of Life Sciences, Neijiang Normal University, Neijiang 641100, China
3
Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
4
College of Life Science, China West Normal University, Nanchong 637000, China
5
Ocean College, Hebei Agricultural University, Qinhuangdao 066003, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Laura Bulgariu
Water 2022, 14(18), 2825; https://doi.org/10.3390/w14182825
Received: 17 July 2022 / Revised: 31 August 2022 / Accepted: 5 September 2022 / Published: 10 September 2022
(This article belongs to the Section Water Quality and Contamination)
Mercury (Hg), as the most potentially hazardous heavy metal, has accumulated in the aquatic environment and has caused concern about its safety. To test the toxic effects of mercury chloride (Hg2+) on rare minnow (Gobiocypris rarus), the acute toxicity of Hg2+ to embryos, newly hatched larvae, juvenile fish, and the short-term developmental toxicity of Hg2+ to the embryo and sac-fry stages, were investigated. The 96-h LC50 values of Hg2+ to embryos, newly hatched larvae, and juvenile fish were 0.56, 0.07, and 0.10 mg/L, respectively, suggesting newly hatched larvae were the most sensitive, followed by juvenile fish, while embryos were the most resistant in response to an Hg2+ challenge. The research data revealed that the safe level of Hg2+ exposure for rare minnow was 0.7 μg/L. In addition, the LOEC (lowest observed effect concentration) and NOEC (no observed effect concentration) values of Hg2+ to heartbeat, mortality, malformation rate, and body length of survived larvae were identically, 0.05 and 0.01 mg/L, respectively. These findings indicated that Hg2+ had lethal effects on rare minnow at different life stages, and that newly hatched larvae were the most sensitive stage. The above findings have important implications for better understanding the environmental risk assessment of Hg2+ on aquatic organisms. View Full-Text
Keywords: acute toxicity; developmental toxicity; embryos; Hg2+; rare minnow acute toxicity; developmental toxicity; embryos; Hg2+; rare minnow
Show Figures

Figure 1

MDPI and ACS Style

Xiong, X.; Shi, Q.; Liu, H.; Zhou, Q.; Li, H.; Hu, P.; Wen, Z.; Wang, J.; Zou, Y.; Zeng, Y.; Hao, Y. Assessment of Acute and Short-Term Developmental Toxicity of Mercury Chloride to Rare Minnow (Gobiocypris rarus). Water 2022, 14, 2825. https://doi.org/10.3390/w14182825

AMA Style

Xiong X, Shi Q, Liu H, Zhou Q, Li H, Hu P, Wen Z, Wang J, Zou Y, Zeng Y, Hao Y. Assessment of Acute and Short-Term Developmental Toxicity of Mercury Chloride to Rare Minnow (Gobiocypris rarus). Water. 2022; 14(18):2825. https://doi.org/10.3390/w14182825

Chicago/Turabian Style

Xiong, Xiaoqin, Qingchao Shi, Hao Liu, Qian Zhou, Huatao Li, Peng Hu, Zhengyong Wen, Jianwei Wang, Yuanchao Zou, Yu Zeng, and Yaotong Hao. 2022. "Assessment of Acute and Short-Term Developmental Toxicity of Mercury Chloride to Rare Minnow (Gobiocypris rarus)" Water 14, no. 18: 2825. https://doi.org/10.3390/w14182825

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop