S R MARIGOUDAR
Articles written in Journal of Earth System Science
Volume 130 All articles Published: 21 July 2021 Article ID 0141 Research article
Fluorescein diacetate hydrolysis assay on copepod
P KARTHIKEYAN P RAJA M KUNGUMA KANNIKA S R MARIGOUDAR K VENKATARAMA SHARMA
Toxicity bioassays measure the direct impacts of contaminants on aquatic environment. Sediment toxicity bioassay using resident species with analysis of priority chemicals accomplish the reliable risk assessment. Copepods are sensitive to environmental contaminants and widely applied for toxicity bioassays. Therefore, present study demonstrates sediment toxicity bioassay on meio-benthic harpacticoid copepod
$\bullet$ Sediment toxicity bioassay on benthic copepod captured impact of pollutants.
$\bullet$ FDA hydrolysis by microbe can be used to assess the level of fecal contamination.
$\bullet$ Sediment toxicity bioassay accomplishes the ecological risk assessment.
$\bullet$ Bioassay described is rapid, inexpensive and aids reliable risk assessment.
Volume 130 All articles Published: 22 August 2021 Article ID 0174 Comments
Eliciting heavy metal contamination on selected native organisms from Cochin estuary using contemporary biomarker approach
N D DON XAVIER S BIJOY NANDAN P R JAYACHANDRAN K V NEETHU D MOHAN S R MARIGOUDAR
The accumulation trends of Cu, Zn, Pb and Ni and their effects on two native species,
$\bullet$ The tissue-specific bioaccumulation and metal selectivity index (MSI) of E. suratensis and V. cyprinoides revealed significantly higher accumulation of Cu and Zn compared to Pb and Ni throughout the study with higher rates during non-monsoonal periods.
$\bullet$ The histopathological studies in fish, E. suratensis from field conditions portrayed significant histopathological alterations such as hyperplasia, deformed secondary lamellae in gill tissues; melanomacrophage centres and necrotic lesions in liver.
$\bullet$ The estimation of human health risk assessment of heavy metals (Cu, Zn and Pb) of E. suratensis from Cochin estuary denoted a possible risk from consumption of fishes from the Cochin estuary.
Volume 132, 2023
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