International Journal of
Fisheries and Aquaculture

  • Abbreviation: Int. J. Fish. Aquac.
  • Language: English
  • ISSN: 2006-9839
  • DOI: 10.5897/IJFA
  • Start Year: 2010
  • Published Articles: 234

IJFA Articles

Formulating efficient and affordable feeds for Clarias gariepinus (Burchell, 1822) based on locally available ingredients in Benin, West Africa

June 2024

An affordable feed for the growth of African catfish (Clarias gariepinus) juveniles was developed in Benin as an alternative to high-cost imported feed. Initially, locally available fish feed ingredients were inventoried. Subsequently, six feed formulas (Feeds 1 to 6) were developed using linear algebra software, and the feeds were pelleted using a locally built extruder. The protein content of the formulated feeds...

Author(s): Adékambi D. Adéyèmi, Adéchola P. P. Kayodé, Ifagbémi B. Chabi, Abdel-Fadel Alamou, Martinus J. R. Nout and Anita R. Linnemann

Proximate composition, mineral content, peroxides and rancidity in open sun and solar-tent dried small sardine fish in Malawi

October 2023

This study examined protein and fat content, mineral composition and peroxides of fresh and dried small sardines (Engraulicypris sardella), locally known as usipa in Malawi. This species of fish is endemic to Africa, neglected and consumed largely by low-income families. Samples were collected immediately after harvesting, drying, transportation and marketing for three days. Association of Official Analytical Chemists...

Author(s): Dorothy Banda, William Kasapila, Victoria Ndolo, James Banda, Martin Likongwe and Kingsley Kamtambe

Impact of school pond education programme conducted for adolescent students of Chitwan and Nawalparasi districts, Nepal

September 2023

Malnutrition consists of a deficiency, excess or imbalance of energy and other macro-and micro-nutrients that changes the body composition and function, resulting in poor clinical outcomes. This study aimed to analyze the effectiveness of behavioural-based nutrition education to increase fish consumption among school children using two types of pond in Province-3 and 4 of Nepal constructed in secondary level of four...

Author(s): Ishori S. Mahato, Dilip K. Jha, Narayan P. Pandit, Madhav K. Shrestha, James S. Diana and Hillary Egna  

Comparative study of growth rates, condition factors and natural mortality of Oreochromis niloticus fish from culture fisheries and capture fisheries at Lake Kariba, Zambia

August 2023

Oreochromis niloticus were sampled from culture fisheries (Yalelo, Fwanyanga and Choombwe) (n = 211) in April and May, 2020. Capture fisheries (Siavonga and Sinazongwe) (n = 198) were sampled between April and November, 2020. The research was aimed to study the population parameters (growth rates, condition factors and natural mortality) of O. niloticus at Lake Kariba. The results showed that fish at culture fisheries...

Author(s): Mauris Chinyama Makeche, Tamuka Nhiwatiwa, Lufeyo Chitondo, Malvern Kanyati, Cyprian Katongo, Chipasha Kaminsa, Mirriam Kaona, Joseph Ndebe, Malala Mulavu, Cynthia Sipho Khumalo, Edgar Simulundu, Katendi Changula, Simba Chitanga, Benjamin Mubemba, Walter Muleya and Geofrey Makwelele  

Study on the Green Mussel, Perna viridis (L.) distribution, artificial spat collection, and raft culture along the Karwar Coast, Eastern Arabian Sea

July 2023

Green mussel, Perna viridis is widely distributed along the Indian peninsula and considered as a nutritious delicacy. The growing demand for edible mussels prospered the farming practices along the Indian coast for which seeds termed “Spats” are derived from nature. In this study, naturally distributed green mussels’ beds were surveyed along the intertidal and estuarine regions across the Karwar coast....

Author(s): Shivakumar Haragi, Prashant K. C., Saavi N., Rajeshree P., Shreedevi H. and Sreekanth G.B  

Trophic relationship of fish species in Ogbese River, Ado-Ekiti, South-Western, Nigeria

July 2023

This study was conducted to determine the trophic relationship of Clarias gariepinus, Parachanna obscura, and Oreochromis niloticus collected from Ogbese River, Ado Ekiti, South-Western, Nigeria between June and September, 2017. The fish specimens were examined and their stomach contents analyzed. Numerical, frequency of occurrence and volumetric methods were employed in this study. The result of the analysis...

Author(s): Idowu Eunice Opeyemi, Oso James, Abayomi, Agunbiade Razaq Olusola and Efemieyah Joy Valentina

Process conditions for successful low-cost extrusion of floating fish feed granules for African catfish, Clarias gariepinus in West Africa

February 2023

The production of floating fish feed for the African catfish, Clarias gariepinus, in sub-Saharan African countries is challenged by a lack of affordable equipment and processing know-how. The present study aimed at defining the operating conditions for a locally built single-screw extruder. The effects of main ingredients and their particle size on the extrusion outcome were assessed. Moisture contents of 200 to 250 g...

Author(s): Adékambi Désiré Adéyèmi, Adéchola P. Polycarpe Kayodé, Ifagbémi Bienvenue Chabi, C. M. Bordas Amoussou, Fifamè Emeline L. Fassinou, M. J. Rob Nout and Anita R. Linnemann  

Assessing the impact of a budget cage technology on Nile Tilapia (Oreochromis niloticus) production in the Bontanga, Golinga and Libga reservoirs in Northern Ghana, Africa

September 2022

The potential of irrigation reservoirs in northern Ghana to support Nile Tilapia (Oreochromis niloticus) production in 1 m3 budget cages was assessed over six-months in three reservoirs (Bontanga, Golinga and Libga). Fingerlings with a mean weight of 17.0 ± 5.0 g were randomly stocked at 50, 100, 150, 200 and 250 fish per cage in duplicate and fed with a commercial tilapia feed (Raanan, 30% protein level) at 3 to...

Author(s): Fuseini Tia Iddrisu, Bosompem Ahunoabobirim Agya, Regina Esi. Edziyie, Benjamin Betey Campion, Daniel Nsoh Akongyuure and Daniel Adjei-Boateng  

Development of fish feeds for African catfish (Clarias gariepinus Burchell 1822) farming in Sierra Leone, West Africa

September 2022

This preliminary study was carried out to formulate high quality least-cost feed for the farming of African catfish (Clarias gariepinus Burchell 1822) in Sierra Leone. Locally sourced feed ingredients with vitamin premixes, lysine and methionine were used to formulate a 45% crude protein feeds for the African catfish. Proximate contents determined for the practical feed were compared with two imported commercially...

Author(s): Olapade O. J. and Saboleh P.  

Socio-economic characteristics of the fishing fleets operating in Benin, West Africa

May 2022

The fishery industry plays a paramount role in poverty alleviation, food security and job creation in Sub-Saharan Africa. Scientific attempts to characterize the sector are however limited. This study used primary and secondary data from 2014 to 2018 to characterize fishing fleets and the diversity of fish species landed in Benin. Primary data were collected via face-to-face interviews and focus group discussions with...

Author(s): Simon Ahouansou Montcho, Setondé Constant Gnansounou, Josiane Flora Chadare,  Kolawolé Valère Salako, Zacharie Sohou, Pierre Failler, Romain  Glèlè Kakaï and  Achille Ephrem Assogbadjo,  

Cost-benefit analysis for small-scale aquaculture production systems: A case of South West Region of Cameroon, Africa

November 2021

Food is necessary for good health as well as the social and political stability of the society. Fish food provides essential nourishment especially proteins of high biological values. It is highly nutritious, tasty and easily digestive. Enterprise budgeting and descriptive statistics were used to estimate the value of smallholder aquaculture systems on a census population using a semi-structured questionnaire in the...

Author(s): Majory O. Meliko, Siri B. Ngoh and Justin N. Okolle  

Cage fish culture in the lake victoria region: Adoption determinants, challenges and opportunities

July 2021

Fish cage farming was first introduced in Lake Victoria in 2005, however, its adoption and production has not met expectations. It is a promising venture that can help solve the problems of food insecurity, unemployment and alleviate poverty if, a conducive investment environment is put in place.  This study sought to explore the adoption determinants, challenges and opportunities of this technology within the Lake...

Author(s): Mary Orinda, Erick Okuto and Martin Abwao

Occupational hazards, risk and injuries of fish processors in Tombo a coastal fish landing site, Sierra Leone, West Africa

June 2021

Fish and fish products bear potential hazards and risks of public health concern. A preliminary study of hazards, injuries and risks among fisherfolk in Tombo, Sierra Leone, West Africa was carried out on November 2018. Sixty subjects from among the organized fish processor groups were interviewed with semi-structured questionnaire. Results obtained from the study were analyzed with Microsoft Excel and presented in...

Author(s): Olapade Olufemi Julius, Kpundeh Mathew Didlyn, Quinn Patrick George and Nyuma Grace Janet Yawa  

Water hardness does not influence iodine-induced mortality of rainbow trout eyed eggs

June 2021

To evaluate the effects of water hardness on survival to hatch of eyed rainbow trout Oncorhynchus mykiss eggs during iodophor disinfection, hard (300 mg/L CaCl2) and soft water (20 mg/L CaCl2) solutions were used in combination with iodophor treatments of 0, 100, 200, 400, 800, and 1600 mg/L. Water hardness did not significantly influence egg survival-to-hatch. In addition, there was no significant interaction between...

Author(s): Alex J. Rosburg, Cameron Enright, Jill M. Voorhees and Michael E. Barnes  

Enhancing the fisheries sector of African Great lakes: Value chain analysis of the Tanganyika Sardine (Limnothrissa miodon, Boulenger 1906) from Lake Kivu, Rwanda

March 2021

Lake Kivu is experiencing unprecedented decline in production of Tanganyika Sardine (Limnothrissa miodon). This study sought to characterise the value chain of this fish species so as to chart its sustainable utilisation. The study performed in 2015 found two chains; an informal chain that takes 30% of the production and a formal chain that handles 70%. The average catch of sardine was 30 kg/day in the high production...

Author(s): A. Murera, M. Verschuur, and Donald R. Kugonza

Aspects of reproductive indices and enteroparasitic infestation of Clarias gariepinus (Burchell, 1822) in a tropical reservoir

January 2021

The study was carried out between September 2011 and August 2013, using 328 Clarias gariepinus in Oba reservoir, Oyo State, Nigeria. Standard methods were used to determine gonado-somatic index (GSI), fecundity values, and enteroparasitic infestation of the fish. Sex ratio was 1.3:1, male to female, and females on an average invested 20.54% of its body weight in egg production while male GSI was 6.05 ± 0.19%....

Author(s): Olumuyiwa Olasunmibo Ajala and Olatunde O. Fawole

Water activity, microbial and sensory evaluation of smoked fish (Mormyrus caschive and Oreochromis niloticus) stored at Ambient Temperature, Terekeka-South Sudan

December 2020

The effect of smoking kilns on water activity, microbial load and sensory attributes was evaluated to adopt suitable technology that maintains the quality of fish in South Sudan. A total of 300 fresh Mormyrus caschive and Oreochromis niloticus were purchased, 36 fresh samples were iced and the remaining 264 fish samples were divided into two batches for pit and chorkor smoking. The experiment was done twice in a...

Author(s): Borodi Charles Mondo, Peter Akoll and Margaret Masette  

Socio-economic and cultural values of two species of crabs (Cardisoma armatum Herklots and Callinectes amnicola Rochebrune) in Southern Benin, Africa: Management of post-harvest losses and exoskeletons

November 2020

Crabs play an important economic and bio-ecological role in most aquatic ecosystems and occupy an important place in the variety of trophic niches. Callinectes amnicola Rochebrune and Cardisoma armatum Herklots are two edible species widely exploited in Benin. The present work aims to i) evaluate the socio-economic and cultural importance of those two crab species, ii) analyze the dynamics of the value chain, and iii)...

Author(s): Toussaint Mikpon, Durand Dah-Nouvlessounon, Nadège Adoukè Agbodjato, Halfane Lehmane, Olaréwadjou Amogou, Christine N’Tcha, Wassiyath Mousse, Haziz Sina, Hyacinthe Ahissou, Adolphe Adjanohoun and Lamine Baba-Moussa  

Effect of stocking density on growth and survival of Nile tilapia (Oreochromis niloticus, Linnaeus 1758) under cage culture in Lake Albert, Uganda

August 2020

In Uganda fish is a great source of animal dietary protein, however, natural stocks continue to decline. Therefore, aquaculture provides a viable option to bridge the increasing fish supply-demand gap. Accordingly, a study was conducted from March to August 2016 to investigate the effect of stocking density on the growth performance, and survival of Nile tilapia (Oreochromis niloticus) in floating net-cages to...

Author(s): Ivan Abaho, Thaddeus Zaabwe, Andrew Izaara, Howard N. Kasigwa, Norman Mushabe, Steven Byenkya, Mujibu Nkambo, Sylvester D. Baguma, David L. N. Hafashimana and Jackson Efitre  

Use of different colours of vertically-suspended structure during the hatchery rearing of juvenile landlocked fall Chinook salmon (Oncorhynchus tshawytscha, Walbaum)

July 2020

This study investigated the effects of coloured structures on the growth of juvenile landlocked fall Chinook salmon (Oncorhynchus tshawytscha, Walbaum) during hatchery rearing. Structures consisted of an array of four aluminum angles painted one of four colours: Silver, red, black and green, which were vertically suspended in circular tanks. After 25 days, mean total lengths and weights of individual salmon reared in...

Author(s): Misty D. Jones, Jill M. Voorhees, Nathan Huysman, Eric Krebs and Michael E. Barnes  

Is aquaculture production by small-scale farmers profitable in Zambia?

February 2020

The current and anticipated demographic changes worldwide are expected to increase fish and other animal protein consumption. Capture fisheries alone cannot meet these requirements. Aquaculture offers a way out if it can further be developed. However, in most developing countries, aquaculture is still in its infancy and the evidence on the industry is quite thin. We assess the profitability of small-scale aquaculture...

Author(s): Thelma Namonje-Kapembwa and Paul Samboko  

Active surveillance of infection caused by Aphanomyces invadans in Malawi

January 2020

In Malawi, fish is regarded as a cheapest source of animal proteins and other macronutrients. Recent epizootic ulcerative syndrome (EUS) outbreaks reported in countries sharing Chobe-Zambezi river system like Zambia, Democratic Republic of Congo, Botswana, Namibia, Zimbabwe and Republic of South Africa, have posed a major threat to fish production. Malawi’s biggest and important Shire River connects to Zambezi...

Author(s): Barnett Kaphuka, Gilson R. Njunga, Gladson Kamwendo and Brino B. Chirwa  

Stress evaluation in dourado females (Salminus brasiliensis) submitted to two different methods of induced spawning

June 2019

The goals of this study were to evaluate dourado female egg viability submitted to stress condition caused by two different reproductive induction methods, extruded and semi-natural. Sixteen females randomly chosen were induced with pituitary extract and allocated in two groups; the first, in which oocytes were manually extruded and the second group, females were allowed to naturally spaw. Blood samples were collected...

Author(s): M. A. Zanoni, S. Carvalho, F. G. Costa and F. R. F. Seiva  

Microbiota of catfish (Clarias gariepinus) tissues harvested from vials polluted with soil from e-wastes dumpsite

June 2019

In this study the microbiota of Clarias gariepinus tissues harvested from e-waste-soil polluted vials were assessed. Soil samples contaminated with e-waste were analyzed using standard analytical protocol while the microbial study was obtained using standard conventional microbiological techniques. The results revealed that the soil was sandy-loamy and blackish in colour. High organic matter (17.60%) and organic carbon...

Author(s): Adegunloye D. V., and Sanusi A. I.  

Bioeconomic analysis of Engraulicypris sardella (USIPA) in South east arm of Lake Malawi

May 2019

Usipa Engraulicypris sardella is the most abundant small pelagic species in Lake Malawi. It plays an important part in the lake communities’ economy and food security. However, much remains unknown on their stock status and bioeconomic importance. This study is carried out to estimate the maximum economic yield and maximum sustainable yield for Usipa fishery in the South-east arm of Lake Malawi. Structured...

Author(s): Innocent Gumulira, Graham Forrester and Najih Lazar  

The spatio-temporal dynamics of the fish assemblage of the man-made Lake Buyo (Cote d'Ivoire, West Africa)

March 2019

This study aims to characterize the spatio-temporal variation of the fish assemblages in relation to the environmental variables of Buyo Dam Lake. Sampling was performed from July 2017 to June 2018 using experimental fishing and commercial fishing. Spatio-temporal analysis indicated a significant variation (p <0.05) in pH, electrical conductivity, total dissolved solids, and water transparency. A total of 45 species...

Author(s): Binta Eric Pacôme GOLI BI, Tanoh Marius KAMELAN, Kouassi Brahiman KIEN, Siaka BERTE and Essetchi Paul KOUAMELAN  

Growth and feed utilization in Clarias gariepinus fingerlings fed on Acacia auriculiformis leaf supplemented diets

March 2019

Effect of ‘Earleaf’ plant (Acacia auriculiformis) as feed additive was examined on Clarias gariepinus fingerlings (4.2±0.5 g) over a period 56 days against farm-made feed which served as the control. A. auriculiformis leaves were collected, air-dried (under shade), powdered and added at varying inclusion levels (0, 0.5, 1.0, 1.5 and 2.0%) to basal diets containing 40% crude protein. Fish were randomly...

Author(s): AFE Oluwafunmilola Eunice and OMOSOWONE Olajumoke Olamiposi  

Socio-economic characteristics of small-scale catfish farming enterprise in Obio/Akpor Local Government Area, Rivers State, Nigeria

March 2019

The study of the socio-economic characteristics of any group is a requirement to a successful implementation of effective government assisted programme. The study examined the socio-economic characteristics, production processes and production constraints of small-scale catfish fishing enterprises in Obio/Akpor Local Government Area in Rivers State, Nigeria. Simple randomized sampling technique was used to select 60...

Author(s): AMACHREE Dokuboba, JAMABO Nene and JOSEPH Dorah E.  

Identification of possible causes of fish death in Lake ‘’Lake Kabo’’

February 2019

Any adverse change in the environmental conditions affects the life of aquatic organisms in water. Fish death was suddenly observed in Lake Kabo. To investigate its cause and look for solution, a research team started to consider the Lake. The present study was conducted to identify the reason for the fish deaths that accidentally occur in the lake. To achieve the objective samples were collected from four different...

Author(s): Sefawdin Berta Bedassa  

Effects of feeding rates and feeding frequencies on growth performance, uniformity of the batch and survival rate of Amazon ornamental fish larvae

February 2019

The aim of this study is to evaluate the effect of different feeding rates and frequencies on angelfish (Pterophyllum scalare) and severum (Heros severus) larvae. For this purpose, two similar experiments were conducted in parallel. For each experiment, a total of 360 larvae were distributed in 36-1 L aquariums. The experiments were done using a factorial 3x3 completely randomized design, with four replicates. The...

Author(s): Daniel Abreu Vasconcelos Campelo, Matheus Henrique Correa Marques, Odinilson Pereira Marim, Lorena Batista de Moura, Bruno José Corecha Fernandes Eiras, Marcos Ferreira Brabo and Galileu Crovatto Veras  

The abundance, distribution and diversity of benthic invertebrates of Lake Malombe

February 2019

The benthic zone of Lake Malombe was sampled for invertebrates, fungi and bacteria using an Ekman Grab measuring 15.2 cm by 15.2 cm. Thirty-six stations were surveyed for macro-invertebrates which were identified to the lowest taxa and enumerated to estimate abundance for the lake. Snails were the most dominant macro fauna, belonging to four genera Melanoides, Bellamya, Bulinus and Lanistes with the mean densities of...

Author(s): Kingsley Kamtambe, James Banda, Barnett Kaphuka and Orton V. Msiska  

Age, growth and mortality rates of round sardinella, Sardinella aurita (Valenciennes, 1810) from the Senegalese coasts (West Africa)

February 2019

Sardinella aurita is the main species exploited by small-scale fisheries in Senegal and represents an important source of low cost protein in the Senegalese market. The objective of this study was to determine the age, growth and mortality parameters of S. aurita obtained from the Senegalese coastal waters. Age, growth parameters and mortality rates of this species were estimated using FiSAT II (FAO–ICLARM Stock...

Author(s): Alassane Sarr, Ismaïla Ndiaye, Waly Ndiaye, Alioune Faye and Malick Diouf  

Value chain analysis of small-scale fisheries in the High Dam Lake in Egypt

February 2019

Although, High Dam Lake small-scale fisheries is an important source of fish for residents of Aswan in Upper Egypt, there is limited information available about the performance of small-scale fisheries value chain. Structured questionnaires with fishers, traders, and processors were used to collect input and output data at each node of the chain. Focus group discussions meeting with stakeholder collected qualitative...

Author(s): Ahmed M. Nasr-Allah, Olfat A. Habib, Malcolm W. Dickson and Harrison Charo-Karisa  

Assessment of the fishery, challenges and opportunities of Denbi reservoir in Bench Maji Zone, South Western part of Ethiopia

January 2019

The study was conducted to assess the fishery, challenges and opportunities in Denbi reservoir, Ethiopia. Interview, focus group discussion and personal observations were used to generate data. Response was solicited from households within the catchment area of the reservoir, key informants, elders, workers of the reservoir and fishery cooperative members. The data was analyzed by combining quantitative, qualitative...

Author(s): Askale G/Michael and Tegegn Fantahun  

Assessment of stomach contents of Oreochromis niloticus from the Lagos Lagoon, Nigeria

January 2019

Fish sustainability in an aquatic environment involves continuous and judicious management towards optimum production of resources, for rational utilization and availability for future generation. Stomach composition of Oreochromis niloticus collected from a tropical brackish water environment was investigated to assess food availability towards optimum fish productivity for rational public utilization. Oreochromis...

Author(s): Abidemi-Iromini, A. O.  

Is the culture of exotic fish species the answer to low fish productivity? A case study on the use of Oreochromis niloticus in Zambia

November 2018

The study was conducted in the Copperbelt and North-Western Provinces of Zambia which represented the urban and rural strata respectively. A total of two hundred and forty farmers were randomly sampled from the farmer registers kept by the Department of Fisheries (DOF) in the Ministry of Fisheries and Livestock (MFL), Zambia. The main objective of the survey was to determine the productivity of the exotic fish species...

Author(s): Alexander Shula Kefi and John Mwango  

Otolith morphometry and fish length relation of Amblypharyngodon mola (Ham.) from Middle Ganga region (India)

October 2018

The aim of this study was to determine a correlation between the length, width and weight of otoliths and the length and weight of fish samples of Amblypharyngodon mola (Hamilton,1822), a Rasborine fish caught from Middle Ganga region. Total length (TL) measurements were made with a 1mm precision fish length measuring scale. Image J software was used for measuring otolith length and width. This study shows strong...

Author(s): Neetu Nimesh and Seema Jain  

Performance of Nile tilapia (Oreochromis niloticus) fed with diets containing caffeine

September 2018

The objective of this study was to investigate the possible effects of caffeine on the performance of juveniles of Nile tilapia. One hundred and forty four (144) juveniles of Nile Tilapia with mass, total length and initial mean height of 2.94 ± 0.16 g, 5.19 ± 0.14 cm and 1.49 ± 0.04 cm, respectively, were used. The fishes were housed in 24 plastic boxes in a closed water recirculation system, where...

Author(s): Bárbara de Cássia Ribeiro Vieira, Pedro Pierro Mendonça, Bruno Borges Deminicis, Paula Del Caro Selvatici and Renata Gomes da Silveira Deminicis  

Anaesthetic effects and haematological responses of heterobranchus bidorsalis juveniles exposed to clove oil

September 2018

This study aims to investigate the use of clove oil as an anaesthetic agent for Heterobranchus bidorsalis juveniles and assess the effects on the test fish, using some hematological parameters. Different concentrations of clove oil (0.8 to 1.2 ppm) were used in static water to determine the induction time and recovery time of the test organisms. Behavioral changes of the test fish were observed, the time the fish became...

Author(s): Olufayo M. O. and Ojo O. M.  

Seasonality in the photosynthetic productivity and biomass of phytoplankton in Lake Tinishu Abaya (Rift Valley, Ethiopia): The basis for fish production

August 2018

The present study was undertaken to investigate the photosynthetic productivity and biomass of phytoplankton for Lake Tinishu Abaya to observe the potentiality of the lake water for fish production. The study was carried out from January to December 2016. For the analysis of various physicochemical parameters, water samples collection was taken from two predefined sampling stations (open-water and nearshore). Biomass of...

Author(s): Yirga Enawgaw and Brook Lemma  

Observations on the biology of Nile tilapia, Oreochromis niloticus L., in Tekeze Reservoir, Northern Ethiopia

July 2018

The study was done to examine some aspects of the reproductive biology of Nile tilapia (Oreochromis niloticus) in Tekeze Reservoir a newly man made hydropower reservoir. A total number of 1826 specimens of Nile Tilapia (O. niloticus) were collected from the reservoir from July 2015 to June 2016. Size at first maturity, sex ratio, gonado-somatic index (GSI), breeding season and fecundity were studied. The overall...

Author(s): Tsegay Teame, Haftom Zebib and Tesfay Meresa  

Substitution of the fish meal by the earthworm and maggot meal in the feed of Nile tilapia Oreochromis niloticus reared in freshwater

June 2018

The present experiment was conducted to evaluate the efficacy of dietary protein from maggot meal and earthworm meal to replace fish meal protein in Oreochromis niloticus juvenile feed. The fish used for this experiment come from the experience of the larval phase during which fish were fed with the formulated diets [fish diet (FD), maggot diet (MD) and earthworm diet (ED)] content 40% crude protein and the commercial...

Author(s): Medard GBAI, N’golo OUATTARA, Yacouba BAMBA, Mamadou OUATTARA, Allassane OUATTARA and Kouakou YAO  

Physical, chemical parameters and plankton in a tropical earthen pond catfish farm in Badagry, Nigeria

June 2018

The physico-chemical parameters and plankton abundance of four artificial fish ponds in Omageyu Farms, Ijotun, Badagry, Nigeria was studied and analysed using standard methods monthly from June to December 2015. Water temperature, pH and dissolved oxygen ranged from 27.80 to 32.00°C, 6.90 to 7.40 and 6.80 to 10.00 mg/l, respectively in the four ponds. Water temperature, pH, and dissolved oxygen in Pond A were...

Author(s): Martins Agenuma Anetekhai, Edwin Oritseweyinmi Clarke, Oluwayemisi Adebisi Osodein and Morenikeji Tolulope Dairo

Zooplankton communities as an indicator of ecosystem productivity in Lake Tinishu Abaya, Rift Valley, Ethiopia

May 2018

The ultimate objective of this study was, to explore community structure and biomass of zooplankton in relation to key environmental drivers to bear out the productivity of Lake Tinishu Abaya. Zooplankton samples collection was carried out for a year from January to December 2016 from two sampling sites (open and shore) using 30 µm mesh size net within the euphotic depth. Biomass of zooplankton was anticipated...

Author(s): Yirga Enawgaw and Brook Lemma  

Mortality, recruitment pattern and exploitation rates of two Schilbe Oken, 1817 populations: Schilbe mandibularis and Schilbe intermedius from the Aghien Lagoon; estuarine system of West Africa

April 2018

In Côte d’Ivoire, the Aghien Lagoon is under heavy fishing pressure. Mortality, recruitment pattern and exploitation rate of Schilbe mandibularis and Schilbe intermedius were investigated in this lagoon. Fish samples of both sexes (N = 575) were collected monthly between June 2014 and May 2015 from artisanal and experimental captures. Natural mortality was higher in S. intermedius (M = 0.89 years-1) than in...

Author(s): Sonan Romuald Assi, Koffi Félix Konan, N&#;guessan Gustave Aliko, Koffi Charles Boussou, Kotchi Yves Bony, Aka Jean-Paul Agnissan and Germain Gourène  

Stochastic modelling of Lake Malawi Engraulicypris sardella (Gunther, 1868) catch fluctuation

April 2018

Lake Malawi continues experiencing serious depletion of most valuable fish species. Presently, commercial and artisanal fishery are forced to target less valuable fish species. Evidently, economic importance of Engraulicypris sardella in Malawi cannot be negated as it currently contributes over 70% of the total annual landings. However, such highest contribution could be a sign of harvesting pressure. Therefore, as the...

Author(s): Rodgers Makwinja, Wales Singini , Emmanuel Kaunda, Fanuel Kapute and Mwamad M’balaka,  

Effect of gamma irradiation on the microbiological quality and shelf life of Engraulis encrasicolus in Ghana

March 2018

The effect of irradiation on microbial load and shelf-life of anchovies (Engraulis encrasicolus) was assessed in this study. Irradiation doses used in the study were 2.5, 5.0, 7.5 and 10 kGy. The assessment was carried out at 3 weeks intervals for the period of 9 weeks. Samples were analyzed for microbial load (total viable count, total coliform count and Staphylococcus aureus). Smoked samples were more contaminated as...

Author(s): Stella Agyemang Duah, Geoffrey Emi-Reynolds, Patrick Kumah and Daniel Agyarko Larbi  

Consumers’ preference and perception of smoke-dried white shrimp (Nematopalaemon hastatus) in coastal areas of Ondo State, Nigeria

March 2018

The study assessed consumers’ preference and perception of smoke-dried white shrimps in Igbokoda, a coastal area of Ondo State, Nigeria. The community was purposively chosen because the town is a major cluster for natives from coastal communities in Ilaje and Ese-Odo LGAs of Ondo State, Nigeria. Forty shrimp consumers (20 males and 20 females) were randomly selected for this study. They assessed the sensory...

Author(s): Bayode Paul Omobepade, Olabode Thomas Adebayo and Taiwo Timothy Amos  

Morphometric relationships of African big barb, Labeobarbus intermedius (Rüppell, 1836) in Lake Koka, Ethiopia

February 2018

Morphometric relationships of African big barb, Labeobarbus intermedius (Rüppell, 1836) (Pisces: Cyprinidae) in Lake Koka, Ethiopia was studied based on the total number of 266 adult fish samples collected in April-May and July-August 2011. Fish ranging from 23.3 to 49.0 cm in total length (35±4.1 cm) and from 95.4 to 1200 g in total weight (434.4±206.5 g) were randomly sampled. Of these, 55.6%...

Author(s): Agumassie Tesfahun , Elias Dadebo and Mathewos Temesgen

Effects of Lead Nitrate on catalase production levels in post juvenile Clarias gariepinus (Burchell, 1822)

January 2018

The effects of Lead Nitrate on catalase (CAT) production levels in post juvenile Clarias gariepinus were investigated. A total of 250 samples of the fish were acclimatized for two week. Six samples of the fish were exposed to the sub-lethal concentrations of 00, 28, 43 and 57 mg/L with replicate in each case for 28 days. Two samples of the fish were randomly selected from the treatments and control for the bioassay of...

Author(s): Okoye C. Loveline, Patrick Ozovehe Samuel, Arimoro, F. O., Ayanwale, A. V., Auta, Y. I. and Muhammed, A. Z.

Page 1 of 5, showing 50 records out of 234 total, starting on record 1, ending on 50