Research Papers/Topics in Fisheries

Effects Of Broodstock Sex Pairing Ratios And Resting Periods Of The Nile Tilapia Oreochromis Niloticus (Linnaeus, 1758) On Fry Production

ABSTRACT The Nile tilapia, Oreochromis niloticus (Linnaeus, 1758) forms about 80% of farmed fish in Ghana. However, the unavailability of its seed all year round for culture is a major constraint. This study evaluated the effects of varying male to female broodstock pairing ratios of 1:1, 1:2 and 1:3 with resting intervals of 0, 3 and 7 days on fry production performance of the Akosombo strain of the Nile tilapia at the Ashaiman Aquaculture Demonstration Centre, Ghana. Nine (9) trea...

Impacts of Pollution on the Feeding, Bioturbation and Biomass of the Fiddler Crab, Uca annulipes (H. Milne Edwards) in Gazi and Mikindani Mangroves, Kenya.

ABSTRACTMarine pollution is one of the main anthropogenic factors identified globally to affect the estuarine and coastal ecosystems. One of the recipients of pollutants is the mangroves since they are intercepting between land and ocean. In recent years, the mangrove forests have been proposed for use as natural wastewater treatment wetlands. This is based on research findings conducted in countries like China. However, before promoting the use of natural mangrove as pollution buffers, the e...

Characterization And Control Of Pathogenic Parasites In Nile Tilapia (Oreochromis Niloticus Linnaeus 1758) In Fish-Farming Systems In Bungoma County, Kenya

ABSTRACTIn Kenya, fish farming has been expanding in recent years, with Government support through financial and input subsidies to small scale farmers. The sub sector generates a variety of benefits such as food and nutrition and develops trade. However, the sub sector faces the challenges of fish diseases, given that the fish production facilities support high-density living conditions that are favorable for spread of parasitic diseases. Besides, when fish that is infected is consumed by hu...

Effects Of Probiotics On Growth, Flesh Quality And Hematoimmunological Status Of Cultured Nile Tilapia (Oreochromis Niloticus) In Kirinyaga County, Kenya

ABSTRACTNile tilapia (Oreochromis niloticus) culture in Kenya is mainly conducted in low input ponds where supplementary feed is given alongside pond fertilization. Excess nutrients in the culture water in form of nitrogen (N) and phosphorus (P) may make the culture environment susceptible to invasion by disease-causing microorganisms. In the recent past, probiotics have received much attention as a new strategy in fish health management and have been documented to im...

Hydro-Biology And Fish Production Of The Black Volta Near The Bui Dam During The Pre- And Post-Impoundment Periods

ABSTRACT The hydro-biology of the Black Volta near the Bui dam were studied in relation to fish production as measured by catch per unit effort (CPUE) during the pre- and post-impoundment periods between February 2011 and December 2012. The primary objective was to assess the ecological impacts of the dam on the hydro-biological factors and fish production and provide data for monitoring the hydro-biology and fisheries of the Bui reservoir. Two sampling stations at Bui and Bamboi were s...

Nutritional Composition Of Wild And Hormone Sex Reversed Nile Tilapia(Oreochromis Niloticus)

ABSTRACT The study was conducted to evaluate the nutritional composition through analysis of wild and hormone treated Nile Tilapia, Oreochromis niloticus. The fifteen samples of each wild and sex reversed were measured. The mean weight of wild species samples were (225.9 ± 19.9 g), while sex reversed samples were (169.9±46.3 g) with, significant difference (𝑝 < 0.05). The result of chemical composition presented was as mean percentage to moisture, Fat, Crude protein and Ash all...

The Role of Fisheries' Marketing Extension on Development of Nile Fisheries' Production and Marketing Case study of Fishermen and Merchants in Almorda Market – Omdurman Locality – Khartoum St

AbstractThe purpose of the study was to study the role of fisheries' marketing extention on development of nile fisheries' production and marketing for fishermen and merchants in Almorda fish market in Omdurman Locality in Khartoum State. To achieve this purpose adescriptive analytical approach was used to collect the field data. And A systemic random sampling approach was used to select a sample size of 100 Respondents (50 fishermen and 50 merchant( in Almorda Fish Market in Khartoum ...

Some Fisheries Biological Aspects For Two Fish Species In Khashm El. Girba Reservoir

AbstractThe data used in This study was collected from Khashum El Girba during the period (November 2016 to December 2017) to show the variation in the total landings for major fish species, to estimate the length - weight relationships O. niloticus and L. niloticus with the condition factor and to indicate the spawning seasons of O. niloticus and L. niloticus depending on the (b) values from the length - weight Relationships .The Total landings during study period show the highest lan...

Quality Attributes, Minerals and VitaminsContents Of FishPatties

ABSTRACTThis study was conducted to assess the effect of fish species and waterenvironment on chemical, physical, mineral, vitamin and organolepticproperties of fish patties Malpetrauselectriccus(A) andTetradonfahaka(B), which were usedin the study. Samples were collectedfrom three different water environments River Nile, White Nile and BlueNile.After collected the fresh fish patties were formulated as twogroups(A and B) .The chemical analysis showed that, the protein, moisture, ashc...

Induced Breeding Of The African Catfish (Clarias Gariepinus Burchell, 1822) Under Varying Brood Stock Ratios Using Ovaprim

ABSTRACT Modern methods of producing African catfish (Clarias gariepinus) fingerlings require that the male brooder is sacrificed to obtain milt for artificial fertilization of the eggs stripped from the female under hormonal induction. The objective of this research was to study the semi artificial technique of producing catfish larvae with different brood stock ratios using Ovaprim. The experiment was made up of three (3) treatment groups and each treatment had three (3) replicates ea...

Evaluation of Farm-Made and Commercial Fish Diets for Hapa Culture of Nile Tilapia (Oreochromis niloticus L.) in Ghana

ABSTRACTOne of the major constraints to aquaculture development and expansion in Ghana is affordable nutritionally balanced and cost effective fish diet. Although some fish farmers produce their own farm-made fish diets, these diets do not meet the nutritional requirements of the cultured fish as the farmers do not follow the appropriate feed formulation protocol. This study was carried out to generate information on the commercial fish diets and feed ingredients currently used by small-scale...

Growth Response of Pink Shrimp Penaeus notialis (Perez Far Fante) to Protein enhanced Diets

Artificial feeds of different protein levels (20%, 30% and 40%) were formulated and&nbsp;prepared using locally available Agro Industrial By-Products (AIBPs) such as wheat&nbsp;bran, soybean meal, groundnut cake, fish meal, premix and cassava starch. Prepared&nbsp;feeds were fed to three populations of Penaeus notialis Post Larval Shrimps (PLs) under&nbsp;semi-intensive pond conditions for a 24 week culture period.PLs were fed a daily ration administered six hourly at the rate of 10%, 8%, 6%,...

INVESTIGATING PATHOLOGICAL AGENTS ASSOCIATED WITH THE RUSTY-BROWN SPOTS ON FARMED NILE TILAPIA (Oreochromis niloticus Linnaeus, 1758) IN GHANA

The outbreak of disease in fish farming has become a worldwide problem. The aquaculture&nbsp;industry in Ghana has seen a major rise in the rate of fish mortality in recent times with&nbsp;significant economic losses. New and emerging diseases maybe associated with these&nbsp;mortalities including the rusty brown spot recorded on cultured Oreochromis niloticus&nbsp;(Nile tilapia). However, there is no much information on the pathological agents associated&nbsp;with the condition. The rusty br...

Studies On Abundance Of Jellyfish In Beach Seine Landings Along The Coast Of Greater Accra Region Of Ghana

ABSTRACTThe study was conducted in three landing villages along the coast of Greater Accra Region of Ghana, namely; Ada, La and Bortianor from November 2018 to April 2019. The purpose of the study was to assess the abundance of jellyfish in beach seine landings. Biological data was obtained primarily from local fishermen who deployed beach seine net. The jellyfish families that were encountered were four in number and a total of 2,676 individuals from 72 beach seine hauls. These were; Catosty...

A Comparative Study Of Reproductive And Early Life Growth Performance Of Three Stocks of The African Catfish, Clarias Gariepinus, (BURCHELL, 1822) In Ghana

ABSTRACT A comparative study was carried out into the reproductive and early life growth performance of three stocks of the African catfish, Clarias gariepinus (Burchell 1822) in Ghana under pond culture system at Aquaculture Research and Development Center (ARDEC) in Akosombo in the Eastern Region from January, 2009 to October, 2009. Broodstocks of C. gariepinus were collected from Kumah Farms in Kumasi (Ashanti Region), the Pacific Farms in Ashaiman (Greater Accra Region) and ARD...


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