ABSTRACT Lateralization (eye preference) or handedness has been studied over the years in different species of vertebrates in 9ther to study how they perform multiple tasks simultaneously with respect to their survival, tenacity, responses, detection, etc. Mirror and dyadic test were used to test, determine, and compare the aggression and lateralization levels of Nile tilapia (Oreochromis niloticus) with its own mirror image, an opponent and potential natural predator. 120 apparently he...
ABSTRACT Pharmaceuticals and Personal Care Products (PPCPs) are cosmetics, drugs, or other consumer products used to cleanse, beautify, or treat humans or animals; including prescriptions and over the counter drugs, soaps, fragrances, solvents, non-ionic and anionic surfactants, bleaches, dyes, and sunscreen agents. They are termed Contaminants of Emerging Concerns and are Endocrine Disrupting Substances in both aquatic animals and humans. This study therefore seeks to analyze Caffeine in P...
ABSTRACT The study investigated the histo-hematological properties of African Catfish exposed to antifouling paint. Concentrations 0.75ml/L, 1.00ml/L, 1.25ml/L, 1.50ml/L and control which were fractions of a preliminary 96h LC50 and control were used in the static bioassay. Physicochemical parameters (Temperature, pH, DO) of the test media were measured across the concentrations and it was found that Temperature and pH remained the same during the 96hours exposure period while Dissolved Oxy...
ABSTRACT High cost of feed is a major constraint to fish farming in Nigeria. This study investigated the growth performance of African catfish (Clarias gariepinus) fed graded levels of plantain peels (PPM). PPM was used to replace maize at 0% (T1), 25%(T2), 50% (T3), 75% (T4) and 100% (T5) for 56 days level. Data collected were analyzed One-way ANOVA test. Results showed that control diet (0% PPM) recorded the highest average weight gain (7.34 ± 0.09) which was significantly different (p0.05...
ABSTRACT The effects of Moringa o/eifera seed meal (MSM) on the growth performance and haematological indices of Clarias gariepinus fingerlings were investigated for a period of eight (8) weeks. Five iso-nitrogenous (40% crude protein) diets were fonnulated under completely randomized experiment in which MSM replaced fish meal (FM) at 0% (Tl), 25% (T2), 50% (T3), 75% (T4) and 100% (TS) inclusion levels. Catfish fingerlings (8.35 ± 0.06 g) stocked at 10 fish per 20-litre tank in three repl...
ABSTRACT The evaluation of Kolanut pod husk (KPHM) as substitute for maize in the diet of African catfish (Clarias gariepinus) was investigated for period of eight (8) weeks. KPHM was substituted for maize at 0% (control (Tl)), 2S% (T2), SO%(T3), 7S% (T4) and I00% (TS) in the five different diets .C. gariepinus fingerlings (average Weight 3.02g to 3.07g) were randomly distributed into plastic tanks with 10 fish/tank in triplicate treatments and were fed twice daily at 8:00am and 4:00pm per ...
Abstract The study investigated the effects of dietary fermented and autoclaved castor seed meal on growth performance, hematology and carcass composition of Clarias gariepinus fingerlings. 150 Clarias gariepinus fingerlings were randomly distributed into 5 groups of ten fish per tank each to five treatments. The experimental design is a complete randomise design in which there were three replicates for each treatment. The experimental diets which were designated 0%, 5%, 10%, 15% and 20% resp...
ABSTRACT One of the major cases of pollution has resulted from man's need for improvement in lifestyle and technology i.e. improvement technologies such as motorized vehicles and vessels. Man's need to maintain and keep these technologies on the move has led them to introduce maintenance products such as brake oil, carburetor cleaner, STP Oil wash etc. Of these products is ABRO Motor Flush which serve as oil wash for motors. ABRO Motor Flush containing naphthalene is a combustible liquid wi...
ABSTRACT Ninety (90) hatchery bred fingerlings of Clarias gariepinus (mean weight: 0.96 ± 0.1g) were randomly placed in 15 plastic baths (25 litres each) at the Research laboratory and were exposed to different concentrations of oil products to determine their effects on the fish, to facilitate inferential deductions that will enhance effective aquatic environmental management. Three (3) replicate basins of 5 experimental treatments (crude oil, petrol oil, kerosene oil, engine oil and contro...
This study investigated the effects of yeast on the growth and body composition of Heterobranchus longifilis. Fingerlings of Heterobrachus longifilis (mean weight 31.89 ± 0.4 g) were stocked ten fish in 35L of water in 54L capacity aquaria and fed varying levels of yeast in floating diets for 56 days. Four treatments having 1.0 g, 2.0 g, 3.0 g and 4.0 g yeast/100 g respectively with a control diet, were investigated in triplicates. The diets had 42.56 %, 43.32 %, 43.69 %, 43.86 % and 43.98% ...
Abstract The toxicity of Palm Oil Mill Effluent (POME) was investigated with emphasis on histopathological effects of Nile Tilapia (Oreochromis niloticus) juvenile. Static bioassay was conducted to determine the LC50 of POME to Nile tilapia fingerlings. The fishes were exposed to 0, 5, 25, 50 mg/l of POME. Histopathological examinations were performed on the gills and liver of Nile tilapia fingerlings exposed to POME under standard laboratory condition. 120 live and apparently healthy O. nilo...
ABSTRACT The study utilized primary data collected from 80 respondents selected via multistage sampling procedure to analyzed the cost and return of aquaculture production in Ekiti State, Nigeria A predictive multiple regression model was estimated to determine the influence of cost of inputs on the farmer’s revenue. Profitability parameters such as Gross margin, Benefit-Cost Ratio (BCR), Return on Investment (ROI) and Percentage Profitability (PP) were used to estimate the profitability of...
Abstract The relationship between the morphology and fecundity of African River prawn (Macrobrachium vollenhovenii) in Asejire Reservoir, Nigeria was evaluated between March and August, 2014. A total of 209 M. vollenhovenii were collected during daytime from fishermen’s catch landed at Asejire Reservoir, Nigeria. Morphometric parameters and weight of each ovary were determined using graduated measuring board and OHAUS sensitive digital balance (Model CP4 13) to the nearest 0.1cm and 0.01 g ...
INTRODUCTION Aquaculture is one of the fastest growing food producing sectors in Agriculture and fish is among the most traded food commodities world-wide accounting for 17 per cent of global intake of animal protein (Food and Agricultural Organization, 2014). Fish is an aquatic and a source of high-quality animal protein that could be harvested from capture or culture fishery (Olele et al., 2008). Fisheries expert needs a medium where they can culture fish in a confined and controlled envi...
AQUATIC ECOLOGICAL SURVEY INTRODUCTION An aquatic ecological survey can be referred to as the backbone of Fisheries, and the process of planning can be referred to as a survey, according to a popular saying “he who fails to plan, plan to fail”. The aquatic ecological survey deals with proper planning in both capture and culture fisheries; planning (survey) in capture fisheries involve the use of a sophisticated instrument to check the aquatic resources of economi...