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VOL. 9, ISSUE 5 (2024)
Effect of heavy metals, cadmium & copper on freshwater prawn, Macrobrachium lamarrei lamarrei (Crustacea- Decapoda)
Authors
Aman Ahmed, Samiksha Lodhi
Abstract
Aquatic environments face a significant threat
from heavy metal pollution, which originates from natural and anthropogenic
sources. Present study investigates the impact of Cadmium Chloride (CdCl2)
and Copper Sulphate (CuSO4) exposure on the behavior of freshwater
prawns, Macrobrachium lamarrei, and assesses their respective lethal
concentration (LC50) values. The study reveals time-dependent
toxicity, with LC50 values decreasing as exposure duration
increases. Initially, CdCl2 is slightly more toxic thanCuSO4,
but with extended exposure, both metals become equally harmful. The research
emphasizes the vulnerability of Macrobrachium lamarrei to even low
concentrations of these heavy metals, potentially disrupting aquatic
ecosystems. Behavioral changes, including avoidance responses and aggression,
serve as biomarkers of heavy metal pollution, while increased mucus production
and gill darkening are potential defense mechanisms. This study underscores the
importance of mitigating Cadmium and Copper pollution to protect ecosystem
health and highlights the need for further investigation into toxicological
mechanisms. Macrobrachium lamarrei emerges as a valuable bio-indicator
for assessing freshwater ecosystem health due to its sensitivity to
environmental pollutants. The included images depict the behavioral changes
observed in the prawns after heavy metal exposure.
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Pages:32-36
How to cite this article:
Aman Ahmed, Samiksha Lodhi "Effect of heavy metals, cadmium & copper on freshwater prawn, <i>Macrobrachium lamarrei lamarrei</i> (Crustacea- Decapoda)". International Journal of Entomology Research, Vol 9, Issue 5, 2024, Pages 32-36
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