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: 212

IJFA Articles

July 2016

Ovulation induced in African catfish (Clarias gariepinus, Burchell 1822) by hormones produced in the primary culture of pituitary cells

This study examined the potential of catfish pituitary cells to proliferate in culture media and that of hormones produced in their primary culture to induce spawning in African catfish. The trypsinized pituitary cells were cultured in three culture media RPMI 1640, McCoy 5a and M2 media with addition of 10% fetal bovine serum. Female catfish (800±200 g) were induced using the culture medium that gave the...

Author(s): O. O. Oyeleye, S. I. Ola and O. G. Omitogun

June 2016

Occurrence of a Pterygoplichthys disjunctivus (Weber, 1991) population in Cauvery River System, Tamil Nadu, South India

This study reports the first occurrence of exotic loricariid catfish Pterygoplichthys disjunctivus, introduced for aquarium, in tributaries and fed pond of Cauvery River, Thiruvengadu, Tamil Nadu (South India). The morphological features of P. disjunctivus samples are given and compared with closely related species of the same genus. The observed invasive species is highly aggressive in nature and it was reported to...

Author(s): Moorthy Meena, Arumugam Sundaramanickam and Thipramalai Thankappan Ajith Kumar

May 2016

Investigation on Food Ecology of three Cichlid Species in the Mankessim Reservoir, Central Region of Ghana

The Mankessim Reservoir supports a thriving cichlid fishery that provides both financial gain and nutritional value to the people. Fish samples of Hemichromis fasciatus, Tilapia zillii and Sarotherodon melanotheron were obtained from artisanal fishermen by gill nets (10 m long and 1.5 m deep, 3, 6 and 12 mm mesh) and cast nets (25 mm mesh and 2.5 m radius) in the reservoir (5018''52.08'''N...

Author(s): Sandra Akugpoka Atindana, John Blay and Kobina Yankson

April 2016

Reproductive biology of Blackchin tilapia, Sarotherodon melanotheron (Pisces: Cichlidae) from Brimsu Reservoir, Cape Coast, Ghana

This study described some aspects of the reproductive biology of Blackchin tilapia (Sarotherodon melanotheron, Cichlidae) from Brimsu reservoir. A total of 457 specimens were sampled using a monofilament gill net of mesh size 25 mm from September, 2009 to September, 2010. Standard length for the species ranged between 7.5 and 17.6 cm, with both males and females having a unimodal modal length of 10.0 to 10.9 cm. The...

Author(s): Mireku, K. K., Blay, J. and Yankson, K.

March 2016

Bioassay using juvenile mysids for rapid assessment of seawater: A case study from Reef HQ Aquarium (Townsville, Australia)

Reef HQ Aquarium (Townsville, Australia) pumps its new exhibit seawater from a tidal inlet. This study presents the in-house calibration of a bioassay based on juvenile mysids to do a rapid assessment (presence or absence) of toxicity in the new seawater. Calibration tests were carried out for several substances: copper, sodium lauryl sulphate (SLS or SDS), ammonia, antifouling paint, bilge oil from a yacht, oil from a...

Author(s): THOMAS Severine, THYER Sascha, COOPER Ross, Emily Hope and Richard Laming

February 2016

Report of fish mass mortality from Lake Hashenge, Tigray, Northern Ethiopia and investigation of the possible causes of this event

This study was intended to report the disastrous mass mortality of Nile tilapia (Oreochromis niloticus) and common carp (Cyprinus carpio) in Lake Hashenge, Tigray occurred in June, 12 to 15th, 2014 and to investigate the possible causes of this phenomenon. The dissolved oxygen (DO) of the water of the lake was 2.20 mg/L in the north part and 2.09 mg/L in the south west part of the lake with an average of 2.15 mg/L. The...

Author(s): T. Teame, P. Natarajan, H. Zebib and G. Abay

February 2016

The joint action effects of the binary mixtures of some botanical piscicides on post juvenile Clarias gariepinus

Botanical piscicides over the years have been used singly in fishing efforts. This research investigated the joint action of binary mixtures of Carica papaya + Nicotiana tabacum, Anacardium occidentale + Senna occidentalis, and A. occidentale + Luffa cylindrica. Relative toxic units (RTU) estimations and synergistic ratio (SR) models were used in the joint action evaluation. The 96 h LC50 (95% confidence limit [CL])...

Author(s): Ekpendu E. A., Saliu J. K. and Otitoloju A. A.

January 2016

Fish assemblage structure in the Tropical Coastal Lagoon of Grand Lahou (Côte D’Ivoire, West Africa)

Fish assemblages and their relationship with hydrological variables were investigated in the coastal lagoon of Grand-Lahou (Côte-d’Ivoire) from November 2013 to October 2014. Samplings were carried out by means of artisanal fisheries, once a month, in three sites. A total of 8571 fish belonging to 47 fish species from 25 families were recorded. The most represented families were Cichlidae and Mugilidae with...

Author(s): COULIBALY Bakari, , TAH Léonard, JOANNY-TAPE Gnahoré Toussaint, KONE Tidiani, and Paul-Essetchi KOUAMELAN

December 2015

Effect of dietary protein levels on ammonia concentration and growth of Tilapia rendalli (Boulenger, 1896), raised in concrete tanks

Tilapia rendalli juveniles (±9.5 g) were cultured in concrete tanks to determine the effect of four dietary protein levels (30, 35, 40 and 45% crude protein (CP) in feed on ammonia concentration and growth performance of the fish, stocked at 15 fish per tank. Fish were monitored for a period of 90 days. Fish that were fed on 40% CP diet had significantly (P<0.05) higher weight gain, growth, and feed conversion...

Author(s): Rodgers Makwinja, Fanuel Kapute, Wales Singini and Hastings Zidana

December 2015

Application of geographic information system for inland fisheries management: A case study of Stratum VII (Yeji Sector), Volta Lake, Ghana

A geographic information system (GIS)-modeling of fish production in the Stratum VII of the Volta Lake was undertaken with the objective of investigating temporal changes and modeling fish production into the future. Parameters used included number of canoes, number of fishers, and water level. Stratum VII of the Volta Lake is currently one of the areas with the highest fishing activities, the largest fish market at...

Author(s): Dogbeda Mawulolo Yao Azumah , George Wiafe and Patrick Kwabena Ofori-Danson

October 2015

A comparative study of the profitability of brush parks in two states in Nigeria

Brush parks consist of branches of trees or shrubs stuck into muddy bottoms of lagoons, lakes or rivers at a depth of 1 to 1.5 m. The branches are placed in water to form aggregations, which are removed after a short lapse of time, together with any fish that may have sought shelter amongst them. Brush parks are found in several of the West African coastal lagoons such as Lagos and freshwater environments in Niger...

Author(s): Ahmed Gomna

September 2015

Mass production of rotifer (Branchionus calyciflorus) for aquaculture in south-eastern Nigeria

In this research, mass production of freshwater rotifer, Branchionus calyciflorus, for aquaculture in south-eastern Nigeria, using different food types (Chlorella sp., Spirulina sp and Baker’s yeast) was investigated. Rotifer stock culture was prepared using Nitrogen phosphorus Potassium, (NPK) + urea (50 : 2.5 g) and chicken droppings (25 g) with freshly grown alga. Different food concentrations (150, 300, 650...

Author(s): G. E. Odo, J. E. Agwu, F. O. Iyaji, J. C. Madu, N. I. Ossai and L. N. Allison

August 2015

A study of optimal utilization of wood resource through alternative use of wood waste in fish smoking

This study was conducted to determine and compare the suitability and efficiency of wood wastes (sawdust and wood shavings) as alternative energy sources to fuel wood in fish smoking with a view to enhancing optimal utilization of the wood resource. Fish samples collected were smoked with fuel wood, sawdust and wood shavings using Kainji portable smoking kiln. Proximate compositions of the samples were determined and...

Author(s): A. Ibrahim, S. O. Olayimika, J. O. Oyero, T. A. Yisa, S. U. Ibrahim and U. P. Yakubu

August 2015

Differentially expressed genes in the pituitary of the Amazonian fish Arapaima gigas

Arapaima gigas, known as pirarucu, is one of the largest tropical freshwater fish and an icon fish species of the Amazon. Many studies on reproduction of A. gigas have been developed but a significant gap persists. To analyze the gene expression profile of A. gigas from wild stocks, four cDNA libraries from pituitary of young and adults of males and females were developed. Among the differentially expressed genes, 97...

Author(s): Marcos Prado-Lima, and Adalberto Luis Val

August 2015

Limitations in decision context for selection of amazonian armoured catfish acari-bodó (Pterygoplichthys pardalis) as candidate species for aquaculture

Domestication of native species is essential to development aquaculture. However, complete information on criteria used to categorize fish native species is little available and scarce. The objective of this work is to perform narrative review, critically evaluating the problem to selection of amazonian armoured catfish named acari-bodó (Pterygoplichthys pardalis) as candidate species for aquaculture, assigning...

Author(s): Fábio Tonissi Moroni, Antônio Cesar Ortega, Raquel Borges Moroni, Brice Mayag, Rogério Souza de Jesus and Edson Lessi

July 2015

Nutrient utilization and growth of Clarias gariepinus fed four different commercial feeds

Several studies had been conducted on the nutritional requirements of African catfish, Clarias gariepinus. Nevertheless, currently there is a gap about the gross composition of feed ingredients required for formulation of commercial feeds. The aims of this feeding trial were to investigate whether fish fed four different commercial feeds have a significant growth rate and nutrient utilization. A total of 120 fish...

Author(s): Ajiboye Adebola Oluyinka, Ajani Funmilola and Folarinwa Olorunleke Richards

July 2015

Selectivity studies on beach seine deployed in nearshore waters near Accra, Ghana

Beach seine is known to be biologically and ecologically destructive. Over the years there have been increased concerns from fishery managers and stakeholders in West Africa and beyond to reduce this destruction of fish resources by the gear. Total bans for periods in the year or the use of a bigger mesh size (25 mm) at the cod end have been investigated. A covered cod end experiment was conducted in the nearshore...

Author(s): Francis Kofi Ewusie Nunoo and Dogbeda Yao Mawulolo Azumah

June 2015

Ecological investigation of zooplankton abundance in the Bhoj wetland, Bhopal of central India: Impact of environmental variables

The influence of physicochemical properties of wetland, on its zooplankton composition and abundance were investigated for two years between February 2008 and January 2010. In both the years, total of 62 species of zooplankton were identified. At all the stations of the water body Rotifera recorded the highest percentage of 45% followed by cladocera (29%), Protozoa (13%), Copepoda and Ostracoda (8 and 4%) respectively....

Author(s): Najeeb Ahmad Bhat, Rajni Rainaand and Ashwani Wanganeo

June 2015

Influence of environmental variables on the relative abundance and habitat use of two sympatric notobranchiid fishes in a tropical stream

Effect of environmental variables on the population dynamics of two sympatric notobranchiid fishes, Epiplatys bifasciatus and E. spilargyreius in the seasonal Monai Stream of the Kainji Lake Basin in Nigeria were studied for 24 months. In all, 2,544 and 937 specimens of E. bifasciatus and E. spilargyreius were collected respectively. E. bifasciatus was more abundant of the two species throughout the study period. For...

Author(s): B. D. Olaosebikan, S. L. Lamai and O. Ibikunle

May 2015

Effect of dietary replacement of fishmeal with Chlorella vulgaris on growth performance, energy utilization and digestive enzymes in Macrobrachium rosenbergii postlarvae

The present study was conducted to assess the growth promoting ability of Chlorella vulgaris on Marobrachium rosenbergii postlarvae. The experimental diets were prepared by fishmeal replacement with C. vulgaris at different levels (25, 50, 75 and 100%). The prepared feeds were offered to the M. rosenbergii postlarvae during 90 days in triplicate. At the end of the feeding experiment, survival rate, weight gain, specific...

Author(s): Radhakrishnan S., Saravana Bhavan P., Seenivasan C. and Muralisankar T.

May 2015

Photosynthetic productivity and biomass of phytoplankton, in Lake Kuriftu, Ormia Region, Ethiopia

Photosynthetic productivity of phytoplankton and chemicals of the water column in Lake Kuriftu were studied from August 2005 to April 2006. The light-saturated rate of photosynthesis (Amax), which was positively and strongly correlated with phytoplankton biomass, ranged from 571 to 1136 mg O2 m-3 h-1. Biomass-specific rate of photosynthetic productivity at light saturation (Pmax) ranged from 18.78 to 33 mg O2 (mg Chl...

Author(s): Zelalem Dessalegn Fayiss

April 2015

Comparative studies of bacteria load in fish species of commercial importance at the Aquaculture Unit and Lagoon Front of the University of Lagos

Bacteria diseases are widespread and can be of particular importance in fish farming. Bacteria exist as micro flora in water until certain environmental conditions such as poor water quality occur, which could impose a stress on fish, thereby making them vulnerable to infection, most especially by pathogenic bacteria. This study was carried out to assess and compare the bacteria diversities and population in Clarias...

Author(s): Olugbojo, Joseph A. and Ayoola, Simeon O.

April 2015

Carcass yield and proximate composition of black caiman (Melanosuchus niger) meat

The Amazon region is recognized as source of fish for the food industry. The interest in new products made from exotic animal meat has increased. The present study was carried out to evaluate carcass and meat characteristics of Amazon caiman. Samples (n=184) of Melanosuchus niger were collected from a protected area in the Amazonas State (Brazil). The meat was analyzed for proximate composition: Moisture content 78.17%,...

Author(s): A. Kluczkovski Junior, A. M. Kluczkovski, F. T. Moroni, F. Markendorf and A. J. Inhamuns

April 2015

Benefits derived from National Fadama Development Project II by fish farmers in Lagos State, Nigeria

This study assessed the benefits derived by fish farmers from Fadama II project in Lagos State by interviewing 185 fish farmers who participated in Fadama II project from 9 Fadama Community Associations (FCAs) through a multistage sampling technique. Data collected with the aid of structured interview guide were analyzed with descriptive statistics and Chi-square. Majority of the fish farmers were male (71.89%),...

Author(s): Tiamiyu, S. A, Olaoye, O. J., Ashimolowo, O. R., Fakoya, E. O. and Ojebiyi, W. G.

March 2015

Food and feeding habits of Mugil cephalus (Linnaeus, 1758) in Elechi Creek, Niger Delta, Nigeria

The present study is aimed to provide information on the abundance of natural foods needed by Mugil cephalus in the Elechi Creek. The natural food of M. cephalus in the Elechi Creek was studied from stomach contents of the fish. The stomach contents were analyzed using two methods; the frequency of occurrence and numerical methods. Plant materials, diatoms, algae and dinoflagellates constituted its main food. Plant...

Author(s): Jamabo, N. A. and Maduako, N. C.

March 2015

Immunostimulatory and anti-oxidative properties of corn silk from Zea mays L. in Nile tilapia, Oreochromis niloticus

Corn silks are threads found in the maize plant (Zea mays) and traditionally used to treat urological infections and disorders. Corn silk is also known to possess nutrients and volatile compounds. However, this material is often disregarded and unused. This study therefore investigated the potential use of corn silk in aquaculture through its protective capacity in matured Nile tilapia (Oreochromis niloticus (L.) by...

Author(s): Elena S. Catap, Maria Rexie R. Jimenez, and  Ma. Patricia B. Tumbali

February 2015

Some aspects of reproductive biology on effect of heavy metal pollution on the histopathological structure of gonads in Labeo rohita (Hamilton-Buchanan) from Harike wetland, India

Water pollution caused by heavy metals affects breeding and development in fishes of Harike wetland. The effects of heavy metals on fishes are related to their uptake and accumulation by the organism, resulting in metal induced disturbances in the structures and functions of various tissues and organs. Early life stage of fish development, such as oocytes maturation is very sensitive to intoxication. Samples of the fish...

Author(s): Onkar Singh Brraich and Sulochana Jangu

February 2015

Morphometric and developmental characteristics of fish landed by artisanal bait fishers at the Mida Creek, Kenya

Although artisanal commercial and net fishers landings has received attention, the morphometrics of bait fisher landings is poorly documented. This is in spite of the importance of such data to infer fished stock growth and developmental status in order to reduce excessive removal of immature and highly fecund fish. This study compares fish species, size and weight, and derived fish condition, Gonadosomatic and Fishing...

Author(s): Kihia Charles Maina, Hendrick Yvone, Muthumbi Agnes, Okondo Julius, Nthiga Aniel and Njuguna Vincent

January 2015

Parasitic prevalence of fresh water shrimp (Atya gabonensis) in lower Benue River, Makurdi

The study investigated the parasitic prevalence of freshwater shrimps (Atya gabonensis) in the lower Benue River for a period of six months (March – August, 2012) during which a total of 1000 shrimps were sampled randomly from the landing sites of the River Benue and were analyzed at the parasitology laboratory of the verterinary teaching hospital, University of Agriculture, Makurdi. The gills of shrimps had the...

Author(s): Okayi R. G., Ayuba. V. O. and Akisani C.

December 2014

Bacterial population in intensive tilapia (Oreochromis niloticus) culture pond sediment in Hai Duong province, Vietnam

Three intensive tilapia ponds were studied to determine the bacterial population during the culture period in Hai Duong province, Vietnam. Bacteria were identified to genus or species level. Total bacteria count in sediment ranged from 6.49 × 105 to 1.29 × 106 cfu g-1. In total, 11 bacterial genera and 13 species were identified from pond sediments, in which both gram-negative and gram-positive rod-shaped...

Author(s): Huong N. T. Thanh, Hien L. Thuy, Wenresti G. Gallardo and Hai N. Thanh,

November 2014

Morphometric relations, diet composition and ontogenetic dietary shift of Labeobarbus intermedius (Rüppell, 1836) in Lake Tana gulf of Gorgora, Ethiopia

Morphometric relations, feeding habits and dietary shifts of Labeobarbus intermedius in Lake Tana at gulf of Gorgora were studied during the dry season. A total of 250 fish ranging from 13.2 to 43.8 cm total length (TL) and 73.4 to 742.8 g total weight (TW) were randomly sampled from the lake. The data generated from both morphometric parameters were analyzed using SPSS (Version 20) and expressed using least square...

Author(s): Flipos Engdaw

October 2014

Genetic relationships between captive and wild subpopulations of Arapaima gigas (Schinz, in Cuvier, 1822)

Arapaima gigas, also known as pirarucu, is endemic to the Amazon basin. There is currently considerable effort being made to cultivate this species to reduce pressure on natural populations. We characterized the diversity and genetic structure of subpopulations of wild and captive A. gigas based on 19 microsatellite loci. Captive subpopulations of A. gigas exhibited less diversity than wild individuals. We also verified...

Author(s): Carlos Henrique dos Anjos dos Santos, Carolina Sousa de Sá Leitão, Maria de Nazaré Paula e Silva and Vera Maria Fonseca de Almeida e Val,

September 2014

Parasites of some fishes (Labeo rohita and Schizothorax niger) of Jammu and Kashmir in India

The present study has been carried out to find out the parasites of Schizothorax niger and Labeo rohita during different months of the year 2013 to 2014. Parasites belonging to two groups viz. ciliophoran (Chilodonella) and crustacean (Argulus) were recorded from 200 fishes of Rohu (L. rohita) and S. niger collected from different parts of Jammu and Kashmir. These two parasites belong to Ectoparasitic group and no other...

Author(s): Irfan-ur-Rauf Tak, Shoaib Ali Dar, M. Z. Chishti, Harpreet Kaur and Gowhar Hamid Dar

August 2014

Implementing a unified methodology for fisheries management (UMFM) in fresh water in Morocco

The ecosystem approach for fisheries management in fresh water is based on the application of appropriate methodologies and tools to promote sustainable production of goods and services with least possible environmental impact and the highest possible economic and social yield.  In this paper, we develop a unified methodology for fisheries management (UMFM) in fresh water in Morocco in order to better plan,...

Author(s): Laamiri Mohamed Badr, Oufrid Salwa and Yahyaoui Ahmed

July 2014

Analysis of resource use efficiency among small-scale fish farms in Cross River State, Nigeria

The study used the stochastic production frontier model to analyze the resource use efficiency among small scale fish farms in Cross River State, Nigeria. The mean efficiency of 0.89 was obtained indicating room for farm efficiency improvement by 11%. Quantity of feed, farm size (pond size), labour and capital had significant influence on fish production in the study area, with positive coefficients of feed quantity and...

Author(s): Kingsley Okoi Itam, Ekanem Abasiekong Etuk and Inibehe George Ukpong

July 2014

Dietary added bamboo charcoal can evoke Pangasianodon growth and can reduce ammonia from culture medium

Ninety-days feeding trial was conducted to determine the growth performances and reduction of ammonia by adding of dietary bamboo charcoal (BC) of pangasiid catfish, Pangasianodon hypophthalmus. Four levels of BC (0, 0.5, 1, and 2% treated as T0, T1, T2 and T3, respectively) were supplemented to the test diet composition. The growth performance and ammonia elimination were influenced by feed type. The mean value of...

Author(s): Rawnak Jahan, M. Abdul Quaiyum, Nusrat Jahan, T. Akhter and M. Sadiqul Islam

June 2014

Multiple infections of Helminths in the alimentary system of Clarias gariepinus (Burchell, 1822) in a tropical reservoir

The study was carried out in Erinle Reservoir accessed through Oore (Latitude 7° 58' 12" North; Longitude 4º 33' 36" East), in Osun State, Nigeria, between August 2011 and November 2013. A total of 103 live fishes purchased from local fishermen were examined. In the laboratory, morphometric parameters  were measured, the sexes determined and the fish species Clarias gariepinus were...

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

June 2014

Developmental changes in intestinal brush border enzyme activity in wild, juvenile Nile perch Lates niloticus (Linnaeus, 1758)

The Nile perch, Lates niloticus is a carnivorous fish and a potential candidate for aquaculture. The relationship between fish size (total length) and the activity of three brush border enzymes: leucine aminopeptidase (LAP), γ-glutamyl transferase (γ-GT) and maltase was evaluated in six size groups (1 to 5, 6 to 10, 11 to 15, 16 to 20, 21 to 25 and 26 to 30 cm) of wild juvenile Nile perch. Enzymatic activity...

Author(s): Kato C. D., Nyatia E., Matovu E., Uni Z., Kedar O., Hakim Y., Levavi-Sivan B. and Rutaisire J.

May 2014

Effects of carbohydrate sources on the growth and body compositions of African catfish (Clarias gariepinus)

Feeding trial was conducted to examine the protein sparing effects of carbohydrate in Clarias gariepinus, an attempt to reduce the feed cost. C. gariepinus fingerlings mean weights of 8.32 ±0.04 g were randomly allotted into a group of 15 fishes per tank in triplicate of 10 treatments. They were fed on nine experimental diets and a commercial catfish reference diet (CRD). The formulated diets have three levels of...

Author(s): Orire A. M. and Sadiku S. O. E.

April 2014

Developing production technique of bloodworm (Chironomidae larvae) in floodplain waters for fish feed

Chironomid larvae or bloodworm is a natural food that has the nutrients suitable for freshwater fish needs. Bloodworm utilization as fish feed in aquaculture is still limited, due to limited production. Huge floodplain waters are potential to be used as a place of bloodworm production. This study aimed to develop a technique producing bloodworm in floodplain waters which included searching suitable characteristics of...

Author(s): Bambang Sulistiyarto, Ivone Christiana  and Yulintine

April 2014

Diet composition, ontogenetic dietary shifts and morphometric relationships of the Nile barb Barbus bynni (Forsskål, 1775) (Pisces: Cyprinidae) in Lake Abaya, Ethiopia

Food and feeding habits of Barbus bynni (Forsskål, 1775) were studied in Lake Abaya, Ethiopia, from January to February, 2010 (dry season) and May to June, 2010 (wet season). From a total of 292 fish samples, 251 (86.0%) contained food in their guts. Macrophytes, insects and detritus were the dominant food items both during the dry and wet seasons. Macrophytes and detritus occurred in 78.1 and 73.3% of the guts,...

Author(s): Elias Dadebo, Seble Bancha, Abinet Wolde-Senbet and Yosef Teklegiorgis

March 2014

Proximate composition and quality aspects of iced wild and pond-raised African catfish (Clarias gariepinus)

Proximate composition and shelf-life studies of wild and pond-raised catfish (Clarias gariepinus) were determined using chemical, microbiological and sensory analyses. Proximate composition of both wild and pond-raised catfish showed differences in the lipid and protein levels. The pond-raised fish had higher lipid (6.30%) and protein (20.00%) than the wild fish lipid (4.48%) and protein (18.05%). Whole ungutted wild...

Author(s): O. Adeosun, O. Olukunle and G. R. Akande

February 2014

Distribution, diversity and taxonomy of marine angelfishes (Pomacanthidae) of Tamilnadu, Southeast coast of India

In the present investigation, a total of 5 species belonging to three genera such as Pomacanthus, Centropyge and Apolemichthys were reported from the 10 selected stations of Tamilnadu, south east coast of India. The diversity studies revealed that the species diversity, richness and evenness were comparatively higher at Rameshwaram and Kanniyakumari due to the rocky shore and coral reef ecosystem. Species composition...

Author(s): Mayavan Veeramuthu Rajeswari and Thangavel Balasubramanian

February 2014

The comparison of total cholesterol and cholesterol types of cultured rainbow (Oncorhynchus mykiss, Walbaum, 1972) and brook trouts (Salvelinus fontinalis, Mitchill, 1815) cultivated under the same water conditions

The aim of this study was to compare serum total cholesterol and cholesterol types of cultured rainbow trout (CRT) (Oncorhynchus mykiss) and cultured brook trout (CBT) (Salvelinus fontinalis) cultivated under the same water conditions. Fishes used in the research were randomly captured from pools and five pieces (five replication) were used for each group. The average weight of fish is 80 g for CRT and is 120 g for CBT....

Author(s): Tayfun Karataş, E. Mahmut Kocaman and Muhammed Atamanalp  

January 2014

Effect of different dosages of zinc on the growth and biomass in five marine microalgae

Marine environment often restrain toxic heavy metals that may enter into the food web via uptake by microalgae and eventually cause severe poisoning problems at higher tropic levels. The effects of Zinc cations upon growth of five native microalgal species, Chlorella marina, Isochrysis galbana, Tetraselmis sp., Nannochloropsis sp., and Dunaliella salina were evaluated. Growth inhibition of the microalgal cells were...

Author(s): Dinesh Kumar S., P. Santhanam, S. Ananth, A. Shenbaga Devi, R. Nandakumar, B. Balaji Prasath,  S. Jeyanthi, T. Jayalakshmi and P. Ananthi

January 2014

Sperm Quality and reproductive performance of male Clarias Gariepinus induced with synthetic hormones (Ovatide and Ovaprim)

Food, especially food protein source is highly essential for healthy living, therefore, this study was aimed at boosting fish seed production and it compared the effectiveness of two different synthetic hormones: Ovaprim and Ovatide on sperm quality and reproductive performance of male Clarias gariepinus and the resulting effects on percentage fertilization, hatchability, and survival. The study was made up of three...

Author(s): Oguntuase Bukola Gbemisola and Adebayo O. T.

November 2013

Wealth based fisheries management of chambo (Oreochromis spp.) fish stock of Lake Malombe in Malawi

A study to establish bioeconomic options for economic exploitation of Chambo (Oreochromis spp.) fisheries of Lake Malombe was conducted between 2010 to 2012. Three models, logistic regression, Univariate Autoregressive Integrated Moving Average and Gordon Schaefer bioeconomic models were used in the analysis. Primary qualitative and quantitative data from fishers and consumers were collected using a pretested semi...

Author(s): W. Singini, E. Kaunda, V. Kasulo and W. Jere

November 2013

Effect of varying stocking density of bottom feeder fish Cirrhinus mrigala and Cyprinus carpio on growth performance and fish yield in polyculture system

The present project was planned to study gradual replacement of Cirrhinus mrigala with Cyprinus carpio and its impact on pond ecosystem. A total of 900 fishes belonging to six species viz. Catla catla, Labeo rohita, Cirrhinus mrigala, Ctenopharyngodon idella, Hypophythylmichthys molitrix and Cyprinus carpio were stocked in four earthen ponds. The dimensions of each pond were 220 × 198 × 7 feet length,...

Author(s): Muhammad Ahmad, Sumaira Abbas, Arshad Javid, Muhammad Ashraf, Khalid Javed Iqbal, Hamda Azmat, Tariq Khan, Sajid Mahmood and Rizwan Haider

November 2013

Food and fish feeding habits in Anwai stream ichthyofauna, Niger-Delta

The food and feeding habits of some fish fauna in Anwai stream were investigated. Fish samples (160 individual fish in 19 species) were collected using combination of traps, gill nets of various mesh sizes and baited hooks and lines in the three zones (upper, middle and lower reaches) of the stream. Stomach content analysis was carried out using frequency of occurrence, numerical analysis and volumetric analysis. It was...

Author(s): Onyeche V. E. O., Onyeche L. E., Akankali J. A., Enodiana I. O. and Ebenuwa P.

November 2013

Contribution of small water bodies and small-holder aquaculture towards poverty alleviation and enhancing household food security in Zambia

A study was conducted between January and May 2011, through administration of questionnaires and personal interviews in 6 of the 10 provinces of Zambia (namely: Lusaka, Eastern, Central, North Western, Copperbelt, and Southern) in order to assess the contribution of small water bodies (SWBs) and small-holder aquaculture towards poverty alleviation and enhancing household food security. Using simple random sampling...

Author(s): Confred G. Musuka and Felix F. Musonda

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