Heavy metals, parasitologic and oxidative stress biomarker investigations in Heterotis niloticus from Lekki Lagoon, Lagos, Nigeria
Heavy metal toxicity in aquatic life as a result of human activities poses a grave health threat to water quality, aquatic and human life. Parasites may serve as indicators of heavy metal pollution. This research investigated the health status of the fish Heterotis niloticus viz-a-viz quality of the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-01-01
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| Series: | Toxicology Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214750020303723 |
| _version_ | 1818448867330359296 |
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| author | Bamidele Akinsanya Isaac O. Ayanda Adeola O. Fadipe Benson Onwuka Joseph K. Saliu |
| author_facet | Bamidele Akinsanya Isaac O. Ayanda Adeola O. Fadipe Benson Onwuka Joseph K. Saliu |
| author_sort | Bamidele Akinsanya |
| collection | DOAJ |
| description | Heavy metal toxicity in aquatic life as a result of human activities poses a grave health threat to water quality, aquatic and human life. Parasites may serve as indicators of heavy metal pollution. This research investigated the health status of the fish Heterotis niloticus viz-a-viz quality of the water and sediments in Lekki lagoon, parasitic infection, presence of heavy metals and oxidative stress response in the liver and intestine of the fish. Parasites recovered were also analyzed for the extent of bioaccumulation of heavy metals. The metals in water, sediments, parasites, and fish were analyzed using Atomic Absorption Spectrometry. Heavy metal concentrations in the surface water were generally below regulatory limits of World Health Organization. Sediment had high levels of aluminium (124.78 mg/kg) and iron (327.41 mg/kg); other heavy metals were below regulatory limits. Tenuisentis niloticus, an acanthocephalan, was the only parasite recovered. Seventy (70) out of 100 fish sampled were infected with the parasite. T. niloticus bioaccumulated Cd, Ni, and Pb between 65 to 100 times more than the liver and 12 to 200 times more than the intestine. Other metals bioaccumulated from the host tissues by the parasite had the magnitude between 1 to 12 times as the liver and 1 to 30 times as the intestine. There were significant differences in the activities of antioxidant enzymes between the parasitized and non-parasitized fishes. Fish tissues also showed histological alterations, ranging from mild infiltration of inflammatory cells to moderate inflammation and haemorrhagic lesions. Human activities that introduce stressors into the lagoon should be controlled. |
| first_indexed | 2024-12-14T20:26:20Z |
| format | Article |
| id | doaj.art-9aaec386710745eb8f8ba8eca4997a87 |
| institution | Directory Open Access Journal |
| issn | 2214-7500 |
| language | English |
| last_indexed | 2024-12-14T20:26:20Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Toxicology Reports |
| spelling | doaj.art-9aaec386710745eb8f8ba8eca4997a872022-12-21T22:48:37ZengElsevierToxicology Reports2214-75002020-01-01710751082Heavy metals, parasitologic and oxidative stress biomarker investigations in Heterotis niloticus from Lekki Lagoon, Lagos, NigeriaBamidele Akinsanya0Isaac O. Ayanda1Adeola O. Fadipe2Benson Onwuka3Joseph K. Saliu4Department of Zoology, University of Lagos, Lagos State, NigeriaDepartment of Biological Sciences, Covenant University, Ota, Ogun State, Nigeria; Corresponding author.Department of Zoology, University of Lagos, Lagos State, NigeriaDepartment of Zoology, University of Lagos, Lagos State, NigeriaDepartment of Zoology, University of Lagos, Lagos State, NigeriaHeavy metal toxicity in aquatic life as a result of human activities poses a grave health threat to water quality, aquatic and human life. Parasites may serve as indicators of heavy metal pollution. This research investigated the health status of the fish Heterotis niloticus viz-a-viz quality of the water and sediments in Lekki lagoon, parasitic infection, presence of heavy metals and oxidative stress response in the liver and intestine of the fish. Parasites recovered were also analyzed for the extent of bioaccumulation of heavy metals. The metals in water, sediments, parasites, and fish were analyzed using Atomic Absorption Spectrometry. Heavy metal concentrations in the surface water were generally below regulatory limits of World Health Organization. Sediment had high levels of aluminium (124.78 mg/kg) and iron (327.41 mg/kg); other heavy metals were below regulatory limits. Tenuisentis niloticus, an acanthocephalan, was the only parasite recovered. Seventy (70) out of 100 fish sampled were infected with the parasite. T. niloticus bioaccumulated Cd, Ni, and Pb between 65 to 100 times more than the liver and 12 to 200 times more than the intestine. Other metals bioaccumulated from the host tissues by the parasite had the magnitude between 1 to 12 times as the liver and 1 to 30 times as the intestine. There were significant differences in the activities of antioxidant enzymes between the parasitized and non-parasitized fishes. Fish tissues also showed histological alterations, ranging from mild infiltration of inflammatory cells to moderate inflammation and haemorrhagic lesions. Human activities that introduce stressors into the lagoon should be controlled.http://www.sciencedirect.com/science/article/pii/S2214750020303723Heterotis niloticusHistopathologyTenuisentis niloticusAquaticOxidative stress |
| spellingShingle | Bamidele Akinsanya Isaac O. Ayanda Adeola O. Fadipe Benson Onwuka Joseph K. Saliu Heavy metals, parasitologic and oxidative stress biomarker investigations in Heterotis niloticus from Lekki Lagoon, Lagos, Nigeria Toxicology Reports Heterotis niloticus Histopathology Tenuisentis niloticus Aquatic Oxidative stress |
| title | Heavy metals, parasitologic and oxidative stress biomarker investigations in Heterotis niloticus from Lekki Lagoon, Lagos, Nigeria |
| title_full | Heavy metals, parasitologic and oxidative stress biomarker investigations in Heterotis niloticus from Lekki Lagoon, Lagos, Nigeria |
| title_fullStr | Heavy metals, parasitologic and oxidative stress biomarker investigations in Heterotis niloticus from Lekki Lagoon, Lagos, Nigeria |
| title_full_unstemmed | Heavy metals, parasitologic and oxidative stress biomarker investigations in Heterotis niloticus from Lekki Lagoon, Lagos, Nigeria |
| title_short | Heavy metals, parasitologic and oxidative stress biomarker investigations in Heterotis niloticus from Lekki Lagoon, Lagos, Nigeria |
| title_sort | heavy metals parasitologic and oxidative stress biomarker investigations in heterotis niloticus from lekki lagoon lagos nigeria |
| topic | Heterotis niloticus Histopathology Tenuisentis niloticus Aquatic Oxidative stress |
| url | http://www.sciencedirect.com/science/article/pii/S2214750020303723 |
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