ABSTRACT The impact of Nypa fruticans (Wurmb) and mangroves on the plankton and benthic communities of Andoni river was carried out between January and August, 2017. Four stations were chosen based on Nypa palm and native mangrove species’ presence and absence. Water quality parameters include; pH 6.99±0.16, Temperature 28.20±0.050C, D.O 4.71±0.18mg/L, Conductivity 19.52±0.20µm/s, Salinity 10.76±0.07ppt, TDS 13.45±0.27ppt. Mean values of the physico-chemical parameters (p
Abstract Studies of intraspecific hybridization and reciprocal cross between cultured and wild Clarias gariepinus and evaluation of their progenies was carried out, with aim of evaluating the progenies of the crosses hatchability, survival, growth etc. Pure strains of cultured and wild Clarias gariepinus broodstock were used. Incubation, hatching, and post hatching activities were monitored in 50 litres plastic bowls. Cultured Male Clarias gariepinus (CCG♂) x Wild Female Clarias gar...
A study was conducted on four fresh water fish species: Protopterus annectens, Labeo coubie, Auchenoglanis occidentalis and Mormyrus rume from lower river Benue, Makurdi to determine the proximate and macro elements composition of these fish species from lower river Benue Makurdi. A total of 600 fish samples were collected, 50 samples from each species for the period of three months. Fish samples were collected and transported to the University of Agriculture Makurdi, Department...
Abstract Water and fish samples were collected monthly from each of the four sampling Sites from August to September 2019 with the aid plastic bottles, hook and line and a gura trap from river Ngadda, Maiduguri, Borno state. A total of 16 fishes belonging to Clarias garipienus were sampled throughout the sampling periods. One fish from each station was dried before digestion and other was digested in its fresh form. The samples were transported to Soil Science Laboratory, Faculty of Agricul...
INTRODUCTION Seahorses (Hippocampus spp.) are among the many genera whose life histories might render them vulnerable to overfishing or other disruptions such as habitat damage. They are generally characterized by a sparse distribution, low mobility, small home ranges, low fecundity, lengthy parental care and mate fidelity (Foster and Vincent 2004). In addition, the male seahorse, rather than the female, becomes pregnant. Indeed, curiosity about this phenomenon explains why currently more is ...
Glyphosate (N-phosphonomethyl glycine) is a broad spectrum systemic herbicide used extensively in weed control. The present study was designed to evaluate the toxicity effect of glyphosate on 300 post juveniles (50g±0.96g; 22cm±0.02) of Clarias gariepinus (Burchell, 1822) after exposure to acute concentration levels of 31, 33, 35, 37 and 39 mg glyphosate/L of clean water. The experiment was completely randomized as each treatment were all replicated thrice. Glyphosate toxicity (96 hr LC50) ...
The genetic basis and expression patterns of key genes are important aspects of study to understand the colouration. This trait differs between wild and domesticated fish which is a matter of research. Botia dario is an indigenous fish, having ornamental and aesthetic value, which shows faded appearance in terms of colour in domesticated condition than wild. In the present study the carotenoid-fed B. dario were examined through incorporation of marigold petal meal in the diets at the rate of ...
Biotechnology research and development is moving at a very fast rate. In broad terms, Biotechnology can be defined as any technological application that uses biological systems, living organisms or derivatives thereof to make or modify products or processes for specific use. This range from the use of synthetic hormones in induced breeding hybridization, production of monosex, uniparental and polyploid Molecular biology, transgenic fish to gene banking. CHAPTER ONE 1.0 INTRODUCTION �...
Agricultural products were among the primary export commodities together with petroleum products during the pre-independence era which made the Nigerian economy fairly stable then, contributing about 95% of the total Gross Domestic Product (GDP). After independence, there has been a steady and consistent decline in the value of agricultural products such that as at year 2002, it was estimated to be 32% of the nation’s GDP (Gross Domestic Product) which shows that economic growth in Nigeria ...
ABSTRACT One Hundred And Eighty samples of True big-scale fish (Brycinus macrolepidotus Valenciennes, 1850) were collected bi-monthly from June November, 2017, from River Ogun, Nigeria. Total length and body weight of all samples measured and samples were grouped based on length into sizes: juveniles (10-14.9 cm), sub-adults (15.1-19.9 cm), and adults (20.2-26.3 cm). Significant differences (p
The phytoplanktons found in the Federal University of Technology Akure (FUTA) was studied from April to August 2017 which spanned for 5 months which took place in two sampling sites, the Fisheries and Aquaculture Technology Research Farm pond (FAT pond) was the first sampling station while Crop Science and Pest Management water body was the second sampling water body where samples were collected at different sampling depths ranging between 16-30cm. A hundred and fifty (150cl) of FUTA water sa...
The pilot study on fish composition and diversity of Apodu reservoir, Malete, Nigeria was carried outbetween January to May 2017 using cast and gill net. A total number of 3333 fish, comprising 8 familiesand 17 species were recorded. Brycinus nurse were most dominant for the period of study contributing29.31% and Auchenoglanis occidentalis, least abundant made up of 0.03% of total catch. Other familiesand there percentage contribution in the total catch were Mormyridae (34.14%); Cichlidae (15...
ABSTRACT The experiments were conducted on the influence of stocking density on growth and survival of post fry of the African mud catfish, Clarias gariepinus. Clariasg gariepinus post fry were stocked at the rate of 5, 10, 15, 20, and 25 post fry/ 30l litres of water. The post fry were fed twice daily with a commercial catfish feed( Skrettings) at 3% body weight. The survival, mean total length, mean body weight, condition factor, specific growth rate and performance index were found to be...
The in vivo activities of inulin and ascorbic acid were evaluated experimentally via using 450 Nile tilapia (Oreochromis niloticus) that were distributed into 3 equal groups (each of three replicates). Fish of the first group served as a control and received a balanced diet free from inulin and vitamin C. The second fed on balanced diet supplemented with inulin (5 g kg1), whereas, the third one received a balanced diet supplemented with vitamin C (500 mg kg1). The survival and growth perf...
The purpose of this study was to examine the effect of some immunostimulants and probiotics on the survival rate, final weight, and disease resistance of overwintered tilapia fry. There were five treatments: T1 (control) fed a balanced diet (35% protein) without additives. Treatments 2 to 5 were fed diets supplemented with 4% garlic, 4 g/kg Echinacea, 4 g/kg Organic Green or 4 g/kg Vet-Yeast, respectively. Growth and resistance to disease challenge with Aeromonas hydrophila and Pseudom...