The concentration and bioaccumulation of heavy metals were investigated in four distinct components (water, sediment, benthic organisms, and fish) in the Ennore estuary. The average concentration of studied metals in water is 2-5 times higher in the sediment. The geoaccumulation index in the sediment, particularly for Cd, 55 folds greater than WHO and USEPS standards. The indices like MI, C, PLI, and PERI demonstrated low contamination levels, whereas I and C revealed elevated levels of cadmium (Cd), signifying a moderate degree of contamination. Human health indices like Target Hazard Quotation (THQ) values generally fell within permissible limits (<1), except for lead (Pb) and iron (Fe). However, HI values exceeded 1, indicating a non-carcinogenic health risk for consumers. The Target Risk for lead (TR) value for Oreochromis urolepis was 1.0 × 10, suggesting a significant cancer risk and may leads to other fish species in future if carcinogenic metals bioaccumulation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.marpolbul.2024.116154 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Bioaccumulation and health risk of metal contamination from different tiers of food chain in Ennore estuary, Southeast coast of India.
Mar Pollut Bull
March 2024
Department of Botany and Microbiology, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia.
The concentration and bioaccumulation of heavy metals were investigated in four distinct components (water, sediment, benthic organisms, and fish) in the Ennore estuary. The average concentration of studied metals in water is 2-5 times higher in the sediment. The geoaccumulation index in the sediment, particularly for Cd, 55 folds greater than WHO and USEPS standards.
View Article and Find Full Text PDFDifferential expression of sirtuin 2 and adipocyte maturation restriction: an adaptation process during hypoxia in fish.
Biol Open
September 2017
P.G. Department of Biochemistry, Bharathi Women's College, Affiliated to University of Madras, Tamil Nadu, Chennai-600 108, India.
Sirtuins have received widespread attention due to their diverse physiological role in metabolism. Among sirtuins, SIRT2 is more abundant in adipocytes and exerts effects on adipocyte differentiation, a process which involves conversion of preadipocytes to mature adipocytes orchestrated by adipokines and adipogenic transcription factors. Grey mullet () was chosen as a study organism due to its excellent service as a biomonitor.
View Article and Find Full Text PDFDetection of metal induced cytopathological alterations and DNA damage in the gills and hepatopancreas of green mussel Perna viridis from Ennore Estuary, Chennai, India.
Mar Pollut Bull
April 2017
Department of Zoology, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India.
This study report the impact of heavy metals on cytopathology and DNA damage in the gills and hepatopancreas of Perna viridis collected from Ennore estuary and the Kovalam coastal waters. Principal Component Analysis (PCA) showed significant differences among all variables at the scale of plots. The ultrastructural alterations such as lack of microvilli, distorted mitochondria, electron dense particles and the presence of large mucous droplets were common in the gill and hepatopancreatic cells of mussels from Ennore estuary.
View Article and Find Full Text PDFVicissitudes of oxidative stress biomarkers in the estuarine crab Scylla serrata with reference to dry and wet weather conditions in Ennore estuary, Tamil Nadu, India.
Mar Pollut Bull
March 2017
Department of Advanced Zoology and Biotechnology, Guru Nanak College, Chennai, Tamil Nadu 600042, India. Electronic address:
The primary objective of this study was to understand the impact of monsoon and summer seasons on the Polychlorinated Biphenyls (PCB's) and petroleum hydrocarbon compounds (PHC's) load in Ennore estuary and how the physiological response of estuarine Scylla serrata inhabiting in this estuary changed with reference to antioxidant defense. Seasonal levels of PCB's and PHC's were assessed in the water along with their bioaccumulation in gills, hemolymph, hepatopancreas and ovary of S. serrata.
View Article and Find Full Text PDFDifferential expression of survival proteins during decreased intracellular oxygen tension in brain endothelial cells of grey mullets.
Mar Pollut Bull
February 2017
P.G. Department of Biochemistry, Bharathi Women's College (A), Affiliated to University of Madras, Tamil Nadu, India.
The brain requires constant oxygen supply to perform its biological functions essential for survival. Because of low oxygen capacity and poor oxygen diffusibility of water, many fish species have evolved various adaptive mechanisms to cope with depleted oxygen. Endothelial cells (EC) are the primary components responsible for controlled environment of brain.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!