Fish Biology And Aquatic Pollution
At the Fisheries department office
Appointment on Visitation important
Topic: Toxicological Impacts, Physicochemical Parameters And Heavy-metal Bio-accumulation In Fish From Industrially Polluted Areas Of Lagos State
The industrially polluted areas (hot-spots) of Lagos lagoon are Ologe lagoon, Badagry creek and Lagos lagoon; which play host to several industries from where various pollutants (effluents) find their way in to the aquatic environment all year round and having great impacts on the ecology of the lagoon system. the scenario described above give rise to water pollution, massive fish kill, and general degradation and possible human health implications. the research aim at cataloging these impacts and using scientific approach to find ways of giving appropriate advice to policy makers on reduction of devastating consequences possible in the near future.Fish are relatively sensitive to changes in their environment as a result of pollution. fish health may thus reflect and give indication of the health status of a specific ecosystem. in this proposed study, emphasis is on the toxicity of effluents on survival, physiological, morphological and haematological changes in fishes.
|1.||Ph.D (Fish Histopathology and Ecotoxicology)||Department of Fisheries and Aquaculture||2015|
Physicochemical parameters, Heavy metal accumulation, Toxicity and Histopathological responses of fingerlings of Clarias gariepinus exposed to Textile Effluent from Odo Iya-alaro, Ikeja, Lagos, Nigeria
INTRODUCTION: Odo Iya-alaro River has been used as sink for waste discharges from various textile companies in Ikeja, Lagos giving rise to water pollution, fish kill, general degradation and pose possible human health challenges.
STATEMENT OF PROBLEM: There has been several reported cases of discharges of industrial wastes leading to changes in the physicochemical parameters and heavy metals in fishes.
AIM: The study is aimed at assessing the various physicochemical parameters of the textile effluents and water of Odo iya-alaro, determine the toxicity and assessing histopathological disorders caused in the fish gills and liver.
MATERIAL AND METHODS: Triplicate samples were collected once a week, analysed for physicochemical parameters, heavy metals and exposed to the fingerlings of Clarias gariepinus at various concentrations in the laboratory for toxicity test after 96 hours, LC50 96 hours values were determined using statistical package. Live fishes were taken to Lagos state University Teaching Hospital for Histopathological analyses of gills and liver. Heavy metals analysis WAS done using effluent samples using Perkin-Elmer flame atomic absorption spectrophotometer.
EXPECTED CONTRIBUTION TO KNOWLEDGE: The study intends to provide Database in relation to statistical analysis of water quality, heavy metal contents of the discharged effluents, heavy metal accumulated in fish tissues, Behavioural responses of the fishes, toxicity of the effluents, and histopathological changes in the fish gills and liver. The above expected results will be useful in providing significant possible solutions to the problems of effluents discharges and to reduce its devastating effects in the study area.
ADEBOYEJO OLAMIWAYE is a Senior Lecturer at the Department of Fisheries
ADEBOYEJO has a Ph.D in Fish Histopathology and Ecotoxicology from Department of Fisheries and Aquaculture