Akinsanya, Bamidele and Isibor, Patrick Omoregie and Kuton, Minasu Pentho and Saliu, Joseph Kayode and Dada, Ebenezer Olasunkanmi (2019) Aspidogastrea africanus Infections, comparative assessment of BTEX and heavy metals Bioaccumulation, and histopathological alterations as biomarker response in Chrysichthys nigrodigitatus (Lacépède, 1803) of Lekki Lagoon, Nigeria. Scientific African.
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Abstract
The study was carried out on 120 randomly selected fresh specimens of Chrysichthys ni- grodigitatus (males and females of different trophic levels) from Lekki lagoon, Lagos, Nige- ria. The aim was to investigate the heavy metals and endoparasitic infection in the fish. We compared the impacts of both stressors on the liver and intestine of C. nigrodigitatus. Water samples were tested for pH, dissolved oxygen (DO), salinity, electrical conductiv- ity, total dissolved solids using a multiprobe meter. Nitrate, nitrite, phosphorus, ammonia, total suspended solids and colour were measured using VR 50 0 0 spectrophotometer. Alka- linity, acidity, biological oxygen demand (BOD) and chloride were measured via Titrimetry method. Chemical oxygen demand (COD) was measured via a closed reflux titration., and turbidity was measured via a VR 2010. Aspidogastrea africanus was the only parasitic in- fection detected in C. nigrodigitatus; though of low intensity. We also observed low heavy metal levels in the environmental media tested. However, the study showed that the liver and intestinal tissues of C. nigrodigitatus were slightly impacted by the stressors even at low levels. We therefore suspect synergy between Aspidogasrea infection and heavy met- als toxicity. We recommend a further biomonitoring of the aquatic environment in order to ascertain the actual causative factors contributing to tissue injuries in the fish. Findings will help mitigate future aggravation of the tissue toxicity. Low levels of Aspidogastrea in- fection is an early prognostic information against outbreak of the disease in the aquatic environment.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Parasite intensity Chrysichthys nigrodigitatus Heavy metals Histopathology Stressor Synergy |
| Subjects: | Q Science > QH Natural history Q Science > QH Natural history > QH301 Biology Q Science > QR Microbiology |
| Divisions: | Faculty of Medicine, Health and Life Sciences > School of Biological Sciences |
| Depositing User: | Mrs Patricia Nwokealisi |
| Date Deposited: | 22 Nov 2019 12:01 |
| Last Modified: | 22 Nov 2019 12:01 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/12978 |
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