Bioaccumulation and lipid quality indices in Paratelphusa lamelifrons from padma river in Bangladesh: Implications for environmental and public health

Abstract

This study examines the impact of heavy metals on the aquatic ecosystem, specifically focusing on the freshwater crab Paratelphusa lamellifrons from the Padma River. The investigation reveals that heavy metals (Mn, Cu, Pb, Cr, Cd, and As) are present in the crab specimens, with Cd exceeding international standards. However, the levels of heavy metals in the crabs are below the suggested intake limits, indicating no immediate harmful effects. Nevertheless, the target hazard quotient and Hazard Index values suggest a potential hazard, and the target cancer risk value indicates a carcinogenic risk from Cd consumption. Significant positive correlations are found between Pb and As, Cu and As, and Cu and Pb. Furthermore, different body parts of the crabs exhibit varying ratios of fatty acids, cholesterol-related indexes, and thrombogenicity indexes. The study concludes that while the current crab accumulation levels are safe for consumption, long-term excessive intake may pose health risks.