Selim Adewale Alarape

• DVM, Ph.D
• Lecturer at University of Ibadan

Introduction Geometric aquaculture growth has resulted in exponentially increasing use of agrochemicals as either parasiticides or herbicides in the aquaculture environment. This study determines some of the toxicological (haematological and biochemical) effects of glyphosate-based herbicides on non-target aquatic animals using Clarias gariepinus a...

Abstract Introduction: monkeypox, a rare viral disease, was discovered in 1958 in Denmark and sporadically affects humans in Central and West Africa rainforests with a mortality rate of 1-10%. This study in Ibadan, Nigeria, aimed to detect the virus in wild rodents near Human-Wildlife Hotspot interfaces. A molecular detection method was employed to...

Introduction: Glyphosate is a non-targeted organophosphate insecticide whose solubility and mobility in hydrophilic solvents enable its rapid leaching into the soil and subsequent contamination of ground and surface water and possible build-up in the aquatic food chain. Based on the public health importance of glyphosate in fish through consumption...

This toxicological study was carried out to determine possible adverse effects of Telfairia occidentalis and Ipomoea batatas leaves in Clarias gariepinus. Ninety-six Clarias gariepinus growers (431.25±6.13 g) randomly distributed into four feeding groups were fed with herbal leaf diet containing 20 g/kg of T. occidentalis (group A), 100 g/kg of I....

Background: One of the major challenges that has driven the spread of Coronavirus Disease 2019 (COVID-19) worldwide is the burden of enforcing the preventive measures required to contain the pandemic. Enforcement of COVID-19 precautionary behaviour should not be homogenous; every country needs to be creative to ensure that humane considerations gui...

Background: Glyphosate, a brand of agricultural herbicides which intensive use has led to widespread contamination of different ecosystems. This study was designed to determine both organotoxicity and genotoxicity of glyphosate on African Catfish (Clarias gariepinus) exposed to different concentrations for 96 hours. Methods: Questionnaires were adm...

Nigeria, like many other developing countries is actively promoting agricultural and food production to confront the challenge of providing adequate food supply. The Nigerian national food hygiene and safety policy was enacted to ensure the sale and consumption of wholesome food. However, our studies on Nigeria’s animal food safety status revealed...

Glyphosate, a brand of agricultural herbicides which intensive use has led to widespread contamination of different ecosystems. This study was designed to determine both organotoxicity and genotoxicity of glyphosate on African Catfish ( Clarias gariepinus ) exposed to different concentrations for 96 hours. Questionnaires were administered (physical...

Fish consumption is one of the major routes of human exposure to environmental contaminants. This study was conducted to assess alternative ways of reducing the bioavailability of mercury and arsenic in Clarias gariepinus and to evaluate ameliorating effects of cooking processes (boiling, frying, and roasting) on the bioavailability of these metals...

Background : The coronavirus disease (COVID-19) remains a global public health issue due to its high transmission and case fatality rate. There is apprehension on how to curb the spread and mitigate the socio-economic impacts of the pandemic, but timely and reliable daily confirmed cases' estimates are pertinent to the pandemic's containment. This...

Background COVID-19 is an emerging public health emergency of international concern. The trajectory of the global spread is worrisome, particularly in heavily populated countries such as Nigeria. The study objective was to assess and compare the pattern of COVID-19 spread in Nigeria and seven other countries during the first 120 days of the outbrea...

Biomonitoring offers an appealing tool for the assessment of pollution in aquatic ecosystem. Biological processes, species, or communities of bioindicators are used to assess the quality of the environment and how it changes over time. Bioindicators include algae, macrophytes, zooplanktons, insects, bivalves, molluscs, gastropods, fish, amphibians,...

Untreated abattoir effluent constitutes potential reservoir for transmission of pathogenic strains of multiple antibiotic-resistant bacteria by pollution of surface and ground water sources. This study was carried out to determine the antibiotic resistance and extended spectrum β-lactamase (ESBL) production profiles of Gram-negative bacteria isolat...

Background: COVID-19 is an emerging global public health crisis. The increase in the daily COVID-19 confirmed cases in Nigeria is worrisome vis-a-vis its large and dense population. This study aims at assessing the first 120 days of COVID-19 case confirmation in Nigeria. Methods: Data extracted from the World Bank’s website were used for the descri...

Background: COVID-19 is an emerging global public health crisis. The increase in the daily COVID-19 confirmed cases in Nigeria is worrisome vis-a-vis its large and dense population. This study aims at assessing the pattern of spread in the first 120 days of COVID-19 case confirmation in Nigeria, and its comparison with seven other countries. Method...

Background: COVID-19 is an emerging public health emergency of international concern. The trajectory of the global spread is worrisome, particular in heavily populated countries such as Nigeria. The study objective was to assess and compare the pattern of COVID-19 spread in Nigeria and seven other countries during the first 120 days of the outbreak...

Background: COVID-19 is an emerging global public health crisis. The increase in the daily COVID-19 confirmed cases in Nigeria is worrisome vis-a-vis its large and dense population. This study aims at assessing the pattern of spread in the first 120 days of COVID-19 case confirmation in Nigeria, and its comparison with seven other countries. Method...

The antibacterial effects of Neem leaf, the growth performance and sensory qualities of African catfish fed with Neem leaf inclusion were investigated in this study. Ninety (90) post-juvenile Clarias gariepinus (42.40± 2.50 g) were used. Experimental groups in triplicate were exposed bi-weekly to 3.5% and 7% LC50 of Neem leaves aqueous extract infu...

Motile aeromonad septicaemia (MAS) mostly caused by Aeromonas hydrophila is a disease of high economic impact in freshwater organism. This study examined the seroconversion and seroprotection of formalinised local isolates of Aeromonas hydrophila in the Clarias gariepinus administered via different routes. Highly virulent Aeromonas hydrophila was t...

Human activities involving urbanization, agricultural development, overuse of fertilizers, inadequate management of land use and waste disposal can affect the quality of water and making it unfit for both aquaculture and domestic purposes. Thus, overexploitation and its attendant pollution is dangerous and threatening to spoil freshwater and aquati...

The project was designed to study the physiological differences and histological changes in cultured and feral Clarias gariepinus. The quality of the culture water was also compared. Water samples and live specimens of Clarias gariepinus of both sexes were purchased weekly for five weeks from fishermen at Eleyele River (feral) and a commercial fish...

The project was designed to study the physiological differences and histological changes in cultured and feral Clarias gariepinus. The quality of the culture water was also compared. Water samples and live specimens of Clarias gariepinus of both sexes were purchased weekly for five weeks from fishermen at Eleyele River (feral) and a commercial fish...

Morphological abnormalities decrease the quality of cultured fish by affecting their aesthetic appeal, growth and survival. This study was designed to assess the different morphological abnormalities in African catfish raised from hatcheries on farms in Ibadan, Nigeria. Pre-tested structured questionnaires were administered to 58 consenting farmers...

Copper sulphate is a naturally-occurring inorganic salt used as herbicide and algaecide in irrigation and treatment of municipal water, also, as a molluscicide in destroying snails and slugs. Its toxicity to fish varies with the species and the physical and chemical characteristics of the water. When used at recommended doses, it may be poisonous t...

The reprotoxic effects of malachite green on Clarias gariepinus was investigated in this study. Male and female broodstock were exposed to malachite green preparation at 20 mg mL-1 stock solution dissolved in 20 L of well-aerated water for 45 min. After which fish were removed and placed in fresh water. Treatment was repeated every other day for th...