Abstract
This study examines the ecological ramifications of heavy metal contamination on benthic invertebrate communities, with a focus on Limnodrilus cervix, in a perennial pond situated in the Raipur region of Jammu, India. The study identified 11,587 individuals of Limnodrilus cervix, showing seasonal variations in abundance. Through a multidisciplinary approach encompassing taxonomic analysis, heavy metal quantification, acute toxicity testing, and bioaccumulation assessments, the research explores the intricate dynamics between pollution and aquatic ecosystems. Findings reveal pronounced seasonal fluctuations in L. cervix populations, with copper emerging as the predominant metal. Acute toxicity tests underscore dose-dependent lead (Pb) toxicity with an LC50 value of 0.03 mg/L, while bioaccumulation experiments elucidate Pb absorption in worm tissue with a bioconcentration factor (BCF) of 0.4 at 0.005 mg/L and 0.7 at 0.01 mg/L. The study underscores the urgent need for informed management strategies to mitigate the ecological risks posed by heavy metal pollution and safeguard freshwater habitats and their inhabitants.
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