
Olanike K. AdeyemoUniversity of Ibadan · Fish and Wildlife Unit, Department of Veterinary Public Health and Preventive Medicine
Olanike K. Adeyemo
DVM, MVPH, PhD
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126
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Introduction
Additional affiliations
August 2013 - July 2015
January 2011 - July 2013
January 2011 - December 2011
Publications
Publications (126)
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...
Outbreaks of African Swine Fever (ASF) have severe economic implications for Nigeria and result in significant loss of livelihoods. The non-availability of vaccines makes biosecurity the reliable key to reducing ASF outbreaks. This study evaluated preparedness for ASF outbreaks at the farm level among 247 pig farmers randomly selected from Abia, Ak...
Science generates solutions for the benefit of the society: creating new knowledge, improving education, and increasing the quality of lives. It is therefore important that African scientists focuses on generating inputs for policy and institutional innovations as well as technology-based innovations to catalyse, support, and accelerate systems and...
The war in Ukraine, with other attendant consequences, has resulted in a massive decline in the supply of major staple foods leading to a rise in food prices globally. As the world focuses on the global food crises precipitated by the Ukrainian war; it is important to contextualize food and nutrition insecurity in the light of domestic challenges....
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....
Haemogregarines are a group of intracellular blood parasites reported in reptiles, other vertebrate taxa including mammals and fish, and haematophagous invertebrates. Information on prevalence, biodiversity, and host-specificity of haemogregarines of tortoises in Nigeria are scarce. A total of 120 African hinge-back tortoises (Kinixys belliana, n=7...
Live bird markets (LBM) remain a critical link from farm to fork in the poultry value chain, which oftentimes promotes indiscriminate antimicrobial use (AMU) and resistance (AMR). In this study, we assessed biosecurity practices, AMU, and associated these with multidrug resistant (MDR) E. coli in LBMs in Abeokuta, Ogun State. A cross-sectional surv...
Fundamentals of Aquatic Veterinary Medicine provides systematic, highly practical guidance on the treatment of aquatic mammals, amphibians, fish, and invertebrates in veterinary practice.
Mapping to each of the nine core areas of the WAVMA Certified Aquatic Veterinarian (CertAqV) Program, this comprehensive clinical reference covers taxonomy, anat...
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...
The book provides well-researched findings and experiences on mentorship. It is a life-long resource material for mentors and mentees.
In September 2018, a group of 14 Heads of States and Governments from all regions of the world came together to create the High Level Panel (HLP) for a Sustainable Ocean Economy (SOE). The HLP is co-chaired by the Prime Minister of Norway and the President of Palau. Simply put, the HLP seeks to ensure a SOE worldwide. In February 2021, the #Virtual...
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...
The development of an antimicrobial stewardship plan (AMSP) for live bird sellers (LBS) requires an understanding of the current biosecurity status, antimicrobial use (AMU), and the practices involved in live bird selling (e.g., drivers, sellers, etc.) which is a direct source of poultry meat for human consumption. Seven Live Bird Markets (LBMs) wi...
The Okobaba area of the Lagos Lagoon, Nigeria, is characterised by sawmilling activities which are potential threats to resident aquatic organisms. This study was aimed at evaluating the effect of sawmilling activities on the environmental quality of the Lagos lagoon at Okobaba area, Lagos, Nigeria. Surface water, sediment, macrobenthic invertebrat...
The United Nations Sustainable Development Goals 14 is focused on the conservation and sustainable use of the oceans, seas and marine resources. Specifically, target 14.1 is aimed at preventing and significantly reducing marine pollution of all kinds in particular from land-based sources including marine debris and nutrient pollution. Aquatic ecosy...
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,...
This study was conducted to evaluate haematological and biochemical parameters of haemogregarine-infected (h-infected) and non-infected African hinge-back tortoises in Ibadan, Nigeria. Blood samples were collected from 120 tortoises, of which 70 were Kinixys belliana and 50 were K. homeana. Stained thin smears were examined for haemogregarines usin...
The United Nations Sustainable Development Goals 14 is focused on the conservation and sustainable use of the oceans, seas and marine resources. Specifically, target 14.1 is aimed at preventing and significantly reducing marine pollution of all kinds in particular from land-based sources including marine debris and nutrient pollution. Aquatic ecosy...
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...
Veterinary practices or activities expose professionals, including students, to hazards associated with animal contact. To describe workplace health and safety status, and risk factors associated with hazards among veterinary clinical students in South-western, Nigeria; a cross-sectional survey was conducted using a semi-structured questionnaire. D...
This study highlighted the effect of Carbendazim on the testicular micro and intermediate filaments adult male African catfish (Clarias gariepinus). Previous studies related to carbendazim toxicity in fish have been limited to mortality patterns and degree of sensitivity across species. Literature on actual pathology in fish is scanty. The fish wer...
Antimicrobial resistance (AMR) in humans has been linked to non-judicious antimicrobial use (AMU) in food animals. To develop antimicrobial stewardship plans (AMSPs) for pig farmers, there is the need to understand the current status of AMU and the driving factors in the industry. Data on AMU, farmers’ perceptions of associated drivers, and biosecu...
The African Catfish (Clarias gariepinus) are important source of protein for local consumers in developing countries in Africa and have also been reported to have enormous commercial potential. Several works have been done on plethora of general histological, biochemical and hormone changes which accompany puberty in African Catfish. Other studies...
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...
This study attempted to assess water quality status of aquatic habitats in BU identified communities in Ogun State and evaluated the heavy metal level in the rivers using fish as a bio-monitor. Water and fish samples were sourced from Eggua, Yewa and Whekan Topa rivers in Ogun State. Physico-chemical parameters and heavy metals were assessed using...
Background: Mycobacterium ulcerans disease referred to as Buruli ulcer (BU) is a health burden in West African sub-region. The mysterious nature of BU is ascribed to peculiarities surrounding its mode of transmission and pathology. Buruli ulcer is predominantly found in rural communities with difficulty in assessing the true prevalence because of p...
L’étude a porté sur la répartition des types de bactéries isolées à partir de fèces et de litières de volaille dans les élevages commerciaux de poules pondeuses des agglomérations de Remo et d’Egba, Etat d’Ogun, Nigeria. Au total, 29 espèces de fermenteurs du lactose et de non-fermenteurs du lactose ont été récoltées. Les bactéries isolées des fèce...
Introduction
Buruli ulcer (BU) is a highly ranked neglected tropical disease (NTD) of global health importance with increasing incidence in sub-Saharan Africa yet there is paucity of information on the epidemiology of BU in Nigeria. Incidentally, highly BU endemic Benin Republic shares proximity with Nigeria. This study was carried out to establish...
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...
High-throughput cell assays that detect and integrate the response of multiple chemicals acting via a common mode of action have the potential to enhance current environmental monitoring practices. Establishing the linkage between in vitro and in vivo responses is key to demonstrate that in vitro cell assays can be predictive of ecologically releva...
The extensive use and misuse of antimicrobials for treatment and prophylaxis in livestock production generally and aquaculture in particular is of great concern to environmental and public health. In Nigeria, regulation and monitoring of aquaculture and other livestock production activities at best is lax. Drug resistance pathogens have therefore b...
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...
Commercial poultry industry in Nigeria is estimated at 320 billion dollars. Despite the huge investments, there still arises concerns for poultry workers’ safety towards preventing risk to potential work-related hazards. This study assessed poultry workers health, hygiene and safety measures practised to guide against exposures to hazards. Descript...
Poultry production contributes largely to the Nigerian economy. However,
antibiotics misuse by poultry farmers has resulted in multidrug resistance and
impeded efficiency of antibiotic treatments in the industry. The study was carried
out to assess antibiotic usage in commercial poultry farms. A survey using
a structured farm-manager questionnaire...
Purpose:
This study aims to investigate the occupational hazards among the abattoir workers associated with noncompliance to the meat processing and waste disposal laws in Terengganu State, Malaysia. Occupational hazards are the major source of morbidity and mortality among the animal workers due to exposure to many hazardous situations in their d...
In this study, the morphometrical pattern of the testis and the histomorphology of the spermatogenesis of Nigerian C. gariepinus were studied using gross and histological techniques, with a view to providing support to further toxicological studies of this species. In this study, the developmental stages and therefore classification of the Nigerian...
Policy Brief for 2015 Global Sustainable Development Report. https://sustainabledevelopment.un.org/content/documents/5694Emerging_diseases_ADEYEMO.pdf
FINAL PROJECT REPORT ON 2008/2009 USDA/FOREIGN AGRICULTURAL SERVICE (FAS) GRANT
IFS RESEARCH GRANT AGREEMENT: A/4933-1
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...
In most tropical developing countries, one of the problems facing aquaculture industry is the pollution of ponds and rivers with pesticides. Chemicals such as diazinon, an organophosphate pesticide, originating from agricultural activity enter the aquatic environment through atmospheric deposition, surface run-off or leaching. Pollutants enter the...
This study was carried out to isolate, characterise and identify bacteria from diseased Clarias gariepinus and
also assess the occurrence of resistance to antimicrobial in isolated bacteria. Samples of diseased African Catfish were collected for a period of six weeks from consenting farms in Ibadan and Ikorodu in Nigeria and examined for clinical s...
Exposure of fish embryos to relatively low concentrations of oil has been implicated in sub-lethal toxicity. However, the effect of oil and dispersants should be more thoroughly evaluated to better understand and anticipate the ecological impacts. Oil (1ppm) and Corexit dispersants (9500 and 9527-0.1ppm) were weathered singly and in combination in...
Veterinary drug residues are considered public health hazards. Tetracycline is widely used in the culture of fish as an antibacterial agent against various fish diseases such as vibriosis, furunculosis, etc., however, improper usage have raised concern over its effect on the environment and consumer health. The incidence of residues in animal produ...
Most fish farmers in developing countries like Nigeria are ignorant of the devastating impact of diseases to aquaculture. This study was carried out to assess fish farmers' knowledge and perception of symptoms of disease among Clarias gariepinus fish farming communities in Ibadan and Ikorodu. Questionnaires were administered to 50 consenting fish f...
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...
An efficient clearance and degradation system maybe needed during microbial invasion which otherwise would lead to severe inflammation and eventually death of fish. Non specific defense mechanism plays an important role at all stages of infection. Significant differences exist between the immune system of fish and mammals including the absence of b...
Clarias gariepinus (Burchell, 1822) of mean weight 320±11.2 g and total length 60.0±1.0 cm were exposed to nitrite (0.2 mg/l NO 2) for 48 h at 27 and 35°C in order to investigate the effects of nitrite poisoning at these water temperatures. The effects of nitrite exposure on fish was assessed on selected haematological and biochemical indicators of...
In Nigeria, the analytical grade formalin is indiscriminately used in the treatment of parasitic infestation in all fish species whereas paracide F (formalin plus methanol) has been approved for use in the USA, only on the eggs of salmonids and esocids. This study was carried out to determine the effect of therapeutic dose of formalin on spawning s...
Aquaculture will play an increasing role in food security in Nigeria. Small-scale integrated fishing-farming systems will provide alternative and/or additional employment opportunities for growing rural populations in remote areas. Closer to the urban centers, in peri-urban areas, micro or small-scale enterprises will mushroom, driven by the increa...
Despite the popularity of the African catfish and its great
market potentials, the production is still basically at
subsistence level due majorly to inadequate supply of seed
for stocking. This has been linked to the absence of reliable
production techniques for the mass production and rearing
of the species under practical farming conditions. The...
Research has demonstrated a positive link between the presence of lead in freshwater, sediments or food organisms and the onset of sub-lethal effects characterized by neurological defects, kidney dysfunction, endocrine disruption, reproductive/developmental defects, behavioural abnormalities and anemia in demersal aquatic fauna. Considering the sig...
Fish have been valued as excellent indicators of water quality because they integrate all the stresses placed on the aquatic ecosystem. This study was conducted to investigate the level of copper in selected Freshwater (Awba Dam, Asejire and Eleyele rivers), Marine waters (Lekki Lagoon and Victoria Island Ocean) and fishes that live in these ecosys...
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...
The status of heavy metal pollutants of the Alaro River within the Oluyole Industrial area in Ibadan Southwestern Nigeria was determined. The concentration and bioconcentration of the lead, arsenic, chromium and cadmium were determined in water and snail using Atomic Absorption Spectrophotometer. The level of heavy metals in water detected in Papa...
The Niger Delta is unique in Nigeria because it is the home of Nigeria's oil industry, with its attendant environmental hazards such as water, land and air pollution. Polycyclic aromatic hy-drocarbons (PAHs) are among the most toxic and persistent components of crude oil. The im-pact of PAHs in the environment will be determined by the types and qu...
The rate of clearance of colloidal carbon from the blood of African Catfish (Clarias gariepinus) over a period of 90 minutes following intravenous injection of 0.5ml of colloidal carbon was investigated. Six catfish of average weight 230-250g were injected with 0.5ml colloidal carbon. The clearance of injected colloidal carbon from the blood was co...
Radiography is a practical screening tool to detect subtle skeletal abnormalities in the adult catfish. Systematic identification of skeletal abnormalities in vertebrates provides an insight into the pathogenesis of skeletal disorders. In the present study; we conducted a mutagenesis screen for skeletal dysplasias in adult catfish, using photograph...