Oxidative stress biomarkers in Trichiurus lepturus and Sardinella maderensis and the effects of heavy metal pollution in Lagos Lagoon, Nigeria

DOI

10.2991/978-94-6463-306-1_21How to use a DOI?

Keywords

antioxidant enzymes;; heavy metals;; Trichiurus lepturus;; Sardinella maderensis

Abstract

Contaminants like heavy metals are discharged into aquatic ecosystems from anthropogenic activities. The responses of Trichiurus lepturus and Sardinella maderensis to heavy metals in three sampling stations from Lagos Lagoon, in the vicinity of wood, textile and power plant industry, as well as control site in Badagry were determined. Heavy metals Pb, Cd, Cu, Cr and Zn were analyzed from fish muscle, water and sediment using atomic absorption spectrometry (AAS) to examine their concentrations and impacts on antioxidant defense enzymes such as superoxide dismutase (SOD), catalase (CAT) and lipid peroxidation (LPO) in the fish muscle. The results showed different effects in T. lepturus (TL) and S. maderensis (SM) in diverse sampling stations with varying degrees of pollution including the control site. Principal component analysis showed that fish samples from Makoko, Ibeshe and Egbin demonstrated a strong correlation between antioxidant defense enzymes and heavy metals concentrations in fish, water and sediment with PCA1 accounting for 56.27% of the loadings and was dominated by heavy metals and antioxidant enzymes in all the media. Variations in activities of antioxidant enzymes were observed in the muscles of T. lepturus and S. maderensis in relation to metal content. The toxic effects were observed as the activity of antioxidant enzymes increased with increased concentration of metals. Significant differences (p˂0.05) in SOD (U/mg protein) in TL (96.09±23.08), CAT (U/mg protein) in SM (3.09±1.08) and LPO (µmol/mg protein) in TL (81.28±03) between fish from sampling sites and control site were observed. The fish from the lagoon were found to be under severe stress as compared to the fish from the reference site. Hence, this study reflects the need for integrating antioxidant enzymes to assess the effects of pollutants in aquatic environments under complex interaction of pollutants.

Copyright

© 2023 The Author(s)

Open Access

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TY  - CONF
AU  - G. E. Ajani
AU  - S. Akindele
AU  - S. O. Popoola
AU  - O. O. Oyatola
PY  - 2023
DA  - 2023/12/18
TI  - Oxidative stress biomarkers in Trichiurus lepturus and Sardinella maderensis and the effects of heavy metal pollution in Lagos Lagoon, Nigeria
BT  - Proceedings of the 6th Biennial Conference of Organization for Women in Science for the Developing World Nigeria (OWSD 2023)
PB  - Atlantis Press
SP  - 319
EP  - 327
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-306-1_21
DO  - 10.2991/978-94-6463-306-1_21
ID  - Ajani2023
ER  -