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Two genetically improved tilapia strains (GIFT and Akosombo) have been created with Oreochromis niloticus (Nile tilapia), which is native to Africa. In particular, GIFT has been shown to be significantly superior to local African tilapia strains in terms of gr…

The complete genetic code was made public at an international conference in Vancouver on 10 June. Fully sequencing the Atlantic salmon genome is a landmark achievement and provides a wellspring of new opportunities for scientists and the aquaculture industry w…

This study by Ahmed Mohamed Nasr-Allah et al was carried out in order to understand the technical and economic characteristics of different Egyptian Nile tilapia (Oreochromis niloticus) hatchery systems. Hatchery operators at fifty tilapia hatcheries in four g…

Many farmers have been unable to successfully breed African Catfish. Several attempts made have given unfruitful results. In this guide, Lanre Ogunsina lists his own simple 19 proven steps to efficiently breed the African Catfish.

Naturally occurring coinfections of pathogens have been reported in salmonids, but their consequences on disease resistance are unclear. Jos A. Gallardo et al, Pontificia Universidad Catlica de Valparaso, Chile, hypothesized that coinfection of Caligus rogercr…

This study by Ahmed Mohamed Nasr-Allah et al, WorldFish, Egypt, was carried out in order to understand the technical and economic characteristics of different Egyptian Nile tilapia (Oreochromis niloticus) hatchery systems.

The objectives of this study by Yngvar Olsen et al, Norwegian University of Science and Technology, Norway, were to examine if early cod larvae could incorporate long-chain highly unsaturated fatty acids like docosahexaenoic acid (22:6 n-3, DHA) from dietary p…

This article from the FAO Globefish Highlights report will provide an overview of production, consumption and consumer trends as well as trade in the Middle East, concluding with summary findings on opportunities and challenges in the region. The Middle Easter…

The enhancement of salmon populations has long been used to increase the abundance of salmon returning to spawn and/or to be captured in fisheries.

During spawning season, a largemouth bass male attentively guards its nest. Recent research at the University of Illinois found that catch-and-release angling could give bass predators the perfect opportunity to consume the young. In fact, the time spent away …

This FAO technical paper, edited by Mohammad R. Hasan, Aquaculture Officer, FAO, provides a comprehensive review of on-farm feeding and feed management practices in aquaculture.

Harmful algal blooms (HABs) have become serious marine environmental disasters, and are spreading all around the world, threatening marine organisms and human health, and limiting economic development in fisheries, aquaculture, and tourism, writes Tianling Zhe…

This study by Mark Cyrus et al, University of Cape Town, South Africa, investigated growth and gonad production of Tripneustes gratilla fed four protein-rich artificial diets supplemented with varying amounts of the macroalga Ulva over a 12-week period.

White spot syndrome, caused by the white spot syndrome virus (WSSV), is the most serious viral disease in penaeid shrimps causing 100 per cent mortality post infection. In the last two decades outbreaks of this virus in commercial shrimp aquaculture farms have…

Soundarapandian. P and Varadharajan. D, Annamalai University, India, evaluate the relative reproductive potential of male morphotypes of M. idellaidella by examining their mating strategy is close quarter in an aquarium.

Ovarian maturity of white sturgeon farmed in California (Sterling Caviar, LLC) (N=400) and Idaho (Fish Breeders and Blind Canyon Aqua Ranch) (N=143) was determined by correlating blood plasma spectral features with oocyte polarization index, an index of germin…

Tilapia species constitute a major and important item in Egyptian fish farming. It displays many favourable attributes as culture species, on the basis of its general hardness, resistance to diseases, high yield potential and ability to grow on a wide range of…

Marshall C. Richmond et al, Pacific Northwest National Laboratory, US, introduce a method for hydro turbine biological performance assessment (BioPA) to bridge the gap between field and laboratory studies on fish injury and turbine engineering design. Using th…

This study by Albin Grns, Erik Sandblom, Anders Kiessling and Michael Axelsson, University of Gothenburg, Sweden, assessed the effects of an opioid drug, buprenorphine (0.05 mg/kg IM), on resting ventilation and heart rates during 7 days of postsurgical recove…

Fish depend on dietary fatty acids (FA) to support their physiological condition and health. Exploring the FA distribution in common carp (Cyprinus carpio), one of the world's most consumed freshwater fish, is important to understand how and where FA of differ…

This study by A. M. Abdelhamid et al, Al-Mansourah University, Egypt, aimed to investigate the effect of dietary graded levels of three pre-and probiotics on the immunity and haematology of all-males mono-sex Nile tilapia fish.

A series of experiments showed that fishmeal is not an essential ingredient in tilapia feeds and that plant protein-based diets can yield results similar to those obtained with diets containing 10 per cent fishmeal, write Nathan Gur and Guy Rubinstein, Israel …

Biologists could gain a deeper understanding about how species have evolved and even find ways to address antibiotic resistance using tools that were developed recently at Stockholm's KTH Royal Institute of Technology.

Torfinn Moldal et al, Norwegian Veterinary Institute, investigated the intestinal health in Atlantic salmon fed with different vegetable oils as partial substitutes of fish oil in the diet.

Fisheries and fish supply are undergoing a fundamental structural transition, as indicated by a ten country analysis. Aquaculture now provides around half the fish for direct human consumption and is set to grow further, but capture fisheries continue to make …

The black tiger shrimp is a marine crustacean of economic importance in the world market. To ensure sustainability of the shrimp industry, production capacity and disease outbreak prevention must be improved. This work by Wanilada Rungrassame et al, National C…

The objective of the present study was to determine the effects of dietary inclusion of different levels of pawpaw seeds powder (PSP) at different periods on the growth performance, survival rate, feed utilization and carcass composition of fry and fingerlings…

Anecdotal reports have indicated polyculture and biofloc systems can reduce outbreaks of diseases at shrimp farms. A laboratory study at the University of Arizona examined the effects of tilapia in controlling acute hepatopancreatic necrosis (AHPN) infection a…

This study by Tirawat Rairat, Niti Chuchirdl and Chalor Limsuwanl, Kasetsart University, Thailand, revealed the benefit of Sangrovit WS, a natural plant feed additive, in anti-inflamatory and antimicrobial activities in shrimp and its effectiveness in preventi…

This FAO document attempts to provide a balanced assessment and comparison of the social and economic performance of carrageenan seaweed farming in different countries. Various issues related to seaweedcarrageenan value chains are highlighted. The technical an…

The use of biofloc systems for shrimp culture requires monitoring of water quality parameters, particularly suspended solids levels, writes Carlos Gaona et al, Universidade Federal do Rio Grande. Taken from the Global Aquaculture Advocate, a Global Aquaculture…

Phytoplankton are the key food item in both aquaculture and mariculture. Both systems are utilizing phytoplankton as food for the animals being farmed. In aquaculture, phytoplankton must be obtained and developed artificially through various adapted procedures…

The rising atmospheric CO2 level is continuously driving the dissolution of more CO2 into the oceans, and some emission scenarios project that the surface waters may reach 1000 ?atm by the end of the century, write Fredrik Jutfelt and Maria Hedgrde, University…

For stock enhancement, the ideal end product is an individual that can survive in the wild until maturity. Conditioning fish for stock enhancement can increase survival and recapture rates, writes Michelle L. Walsh, University of New Hampshire. Taken from the …

Kassaye Balkew Workagegn, Hawassa University, Ethiopia, conducted this study to investigate the growth performance, feed utilization efficiency and survival rate of juvenile Oreochromis niloticus reared in aquaria at different water temperature.

In the Baltic Sea, two cod stocks evolve independently. Also the juveniles of two economically important flatfish species, flounder and plaice, live there within limited space. This is possibly due to the irregular distribution of water masses of different sal…

In part three of three, A.M. Abdelhamid, Mansoura University, Egypt, aims to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on the chemical composition and histology of all-males mono-sex Nile ti…

Ocean acidification has a variable impact on the growth and survival of marine invertebrates. Larval stages are thought to be particularly vulnerable to environmental stressors, and negative impacts of ocean acidification have been seen on fertilization as wel…

In part two of three, A.M. Abdelhamid, Mansoura University, Egypt, aims to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on feed utilization by Nile tilapia fish for 16 weeks.

Sub-Saharan Africa (SSA) aquaculture production needs to grow by 270 per cent to satiate fish demand. In order to meet this demand, many factors have to be considered. This paper, written by Lee Cocker and commissioned by NEPAD through the University of Stirli…