Health risk estimation of metals bioaccumulated in commercial fish from coastal areas and rivers in Bangladesh

Moumita Saha Bristy a, Kishor Kumar Sarker a, Mohammad Abdul Baki a,*, Shamshad B. Quraishi c, Md Muzammel Hossain a, Arifin Islam b, Md Firoz Khan d,e 

Metal contaminations in commercial fish have become a great public health concern worldwide including Bangladesh. The current study was conducted to provide preliminary evidence of nine metals in three commercially significant fish namely Pampus argenteus, Sardinella longiceps and Tenualosa ilisha collected from four coastal stations- Kuakata, Pathorghata, Cox’s Bazar, and Pirojpur, and eight stations of five rivers- Padma, Meghna, Jamuna, Katcha, and Nobogonga in Bangladesh. High magnitudes of Pb (0.74–4.59 mg/kg ww), Cd (0.07-0.24 mg/kg ww), and Mn (0.45–2.03 mg/kg ww) were recorded in the sampling stations that exceeded the maximum permissible limits (MPL) proposed by different recognized organizations. Significant mean differences of metal concentrations were observed (p < 0.05) between species and stations. In fish samples, excessive metals accumulations were recorded from Kuakata (St.1) at the coastal area, and Nobogonga (St. 12) among the rivers. The health risk assessment (HRA) was carried out comprehensively via the estimated daily intake (EDI), target hazard quotient (THQ), hazard index (HI), and target cancer risk (TR) calculations. The outcomes of EDI, THQ, and HI suggest that chronic exposure to towering Pb content might pose potential health threats to inhabitants particularly living in highly polluted stations of the coastal area. In addition, the massive TR values of Cd intake through fish consumption from the coastal area might create cancer risks. Accordingly, the ingestion of metals contaminated fish portends chronic as well as acute health risks to Bangladeshi people living both at home and abroad.

Source:Environmental Toxicology and Pharmacology, https://doi.org/10.1016/j.etap.2021.103666

National Fish Week 2021

The Ganges, Brahmaputra and Meghna Rivers have direct impact on around 620 million peoples. The rivers face significant issues related to biodiversity loss, navigability and flooding - make worse by the challenges inherent in managing trans boundary ecosystems. Fish spawning grounds in the river should control and monitor through the authority act.

#fisheriesmanagement #fish #riverside #conservation #biodiversity #ecology # #water #environment #rivers #fisheries #livelihoods # #wildlife #nature #climatechange #pollution

River, Life and Livelihood

 

River protection and biodiversity conservation

 

Brahmaputra River, Mymensingh

 

The Brahmaputra, also known as the Yarlung Tsangpo in Tibet, the Siang/Dihang River in Arunachal Pradesh, and Luit, Dilao in Assam, is a trans-boundary river which flows through Tibet, India, and Bangladesh. It is the 9th largest river in the world by discharge, and the 15th longest. It flows some 1,800 miles (2,900 km) from its source in the Himalayas to its confluence with the Ganges (Ganga) River, after which the mingled waters of the two rivers empty into the Bay of Bengal.

 

Gaibanda, the Old Brahmaputra leaves the left bank of the main stream and flows past Jamalpur and Mymensingh to join the Meghna River at Bhairab Bazar.) Before its confluence with the Ganges, the Jamuna receives the combined waters of the Baral, Atrai, and Hurasagar rivers on its right bank and becomes the point of departure of the large Dhaleswari River on its left bank. A tributary of the Dhaleswari, the Buriganga (“Old Ganges”), flows past Dhaka, the capital of Bangladesh, and joins the Meghna River above Munshiganj.