» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Diversification is the process by which a smallholder increases the diversity (i.e. number) of its income generating activities (Ellis 2000). Often studied in association with adaptation and accumulation, it is a strategy used by smallho…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Viral diseases have been seriously impacting the sustainability and economic success of prawn aquaculture as they have been resulting in heavy mortalities (Carr et al, 1996). About 20 different prawn viruses have been reported, which hav…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY The Aquaculture Compendium is an encyclopedic, multimedia tool that brings together a wide range of different types of science based information to support sound decision making in aquaculture and aquatic resource management worldwide. I…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY In all countries actively involved in mud crab aquaculture development, the national government is taking a key role in aquaculture planning to underpin national aspirations and growth targets for their respective industries (Ji & Huang,…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY The world production of farm shrimp in 1996 was valued at over $10 billion. In Nigeria, the bulk of producers are also small farmers that operate on average on 15 ha of ponds. Penaeus monodon is the most important farmed shrimp species W…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Nigeria, the country of many rivers, is also rich in lakes, reservoirs and wetlands but many of them had been degraded due to a lot of factors (FGN, 1993). Sustainable fisheries production and development depends largely upon good aquati…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Population Genetics of aquatic species focuses on describing the genetic differences between populations of fish, between the individuals within the same population and between fish in aquaculture. For example, a brown trout from one par…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Global demand for mud crabs has risen over the past decade, led by expanding wealthier markets such as those in Asia, America and parts of Africa. This demand has largely been met by exploitation of wild stocks, causing many to go into d…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Inland capture fisheries in whole world including African rivers deliver food security and income for rural households and also serve as a valuable source of protein and important micro nutrients. Nevertheless, inland fisheries are becom…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Aquaculture of tilapias provides a classic example of a success story of a species group outside its natural range of distribution. The group currently contributes about 3.8 percent to the cultured fish and shellfish production of about …Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Reservoirs are rarely and or never created for fishery purposes. However, the secondary use of the impounded waters for fisheries is becoming an increasingly important activity, particularly in Nigeria, the region that is purported t…Continue Reading »
» Abstract The study examines the management and policy frameworks for illegal, unreported and unregulated fishing in Nigerian waters, how maintaininga legal and regulated fishing system in Nigeria is a pre requisite for the growth and development of the Nigerian economy, to examine theprevalence of…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Fresh fish rapidly deteriorates unless some way can be found to preserve it. Drying is a method of food preservation that works by removing water from the food, which inhibits the growth of microorganisms. Open air drying using sun a…Continue Reading »
» ABSTRACT This study was centered on exploring options for improving livelihoods and resource management in Nigeria coastal communities. The main objective of this study is to examine ways of improving resource management and livelihood. The study employed the descriptive and explanatory design; qu…Continue Reading »
» CHAPTER ONE INTRODUCTION 1.1 BACKGROUND OF STUDY Leachate is any liquid that in passing through matter, extracts solutes, suspended solids or any other component of material through which it has passed, introducing environmentally harmful substances (Wikipedia, 2010). Leachates n…Continue Reading »
» ABSTRACT This study was intended to assess the economic and welfare values of fish in the lower Niger River. This study was guided by the following objectives; to examine the economic and welfare values of fish in the lower Niger River. To examine the effect of artisanal fishery production on the …Continue Reading »
» ABSTRACT Alternative plant protein sources are generally cheaper compared to animal protein sources and may be the solution to reduce the high dependence of farmers on fish meal due to the limited world supplies and increasing price of fishmeal. This study focuses on growth performance of Nile Tilap…Continue Reading »
» ABSTRACT Over the years the importance of plastics for different purposes especially packaging has been emphasized but its adverse effect on the aquatic environment and human health makes it less desirable. Aquatic animals feed on plastic marine debris and sometimes get a sense of satie…Continue Reading »
» ABSTRACTThe concentrations of four heavy metals (cadmium, chromium, nickel and vanadium) in the African river prawn (Macrobrachium vollenhovenii) sampled in three months (April, May and June) at three locations along the Ethiope River bank in Delta State, were investigated by means of an atomic abso…Continue Reading »
» ABSTRACTA study of the physico chemical parameters and heavy metals contamination in water and sediments of Ogbe Ijoh waterside of Warri river, Delta state, Nigeria was carried out between February and July 2013. All samples were taken from three different points along the river. The physico chemica…Continue Reading »
» ABSTRACTThe study of water quality using macro invertebrates as bio indicators of pollution in the Ikpoba river Benin City, Edo State was carried out for a period of 3months (march may) in 2013. Water and macro invertebrate samples were collected from three stations (Okhoro), Reservoir and the Bridg…Continue Reading »
» ABSTRACT The presence of heavy metals in food remains an issue of public health concern. The study was therefore designed to determine the heavy metal concentrations in water and fish (Clarias gariepinus and Tilapia guineensis). The study made use of Agodi lake in Ibadan. A laboratory based study wa…Continue Reading »
» ABSTRACTThis study examined the total replacement of fishmeal (FM) with poultry hatchery waste meal (PHWM) in practical diets for African catfish (Clarias gariepinus). Five iso nitrogenous diets containing levels Diet1, 0% (control); Diet 2, 25%; Diet 3, 50%; Diet 4, 75% and Diet 5, 100% of PHWM as …Continue Reading »
» ABSTRACTSediment samples from Ikpoba River in Benin City, Edo State were sampled and analysed for heavy metals (Fe, Cu, Zn, Mn, Cd and Pb) using atomic absorption spectrophotometer solar 969 unicam series. Some physio chemcal properties of the sediment were also determined. The concentration ranges …Continue Reading »
» ABSTRACT Aquaculture continues to grow rapidly every day, and then became bigger and bigger industry every year. So understanding the basic part behind aquatic production facilities is of increasing importance for all those working in this industry. Aquaculture requires knowledge and skills of th…Continue Reading »
