Features

Salmon raised in a reduced photoperiod environment of 18 hours light are more likely to show undesirable early maturation than those raised under 24 hour light, write Christopher Good and colleagues from the Conservation Fund's Freshwater Institute and USDA-AR…

The objectives of the Aquaculture for Food Security, Poverty Alleviation and Nutrition (AFSPAN) project were to strengthen the knowledge base and develop new and more rigorous methodologies of quantifying the contribution of aquaculture to combat hunger and po…

Scientists at MIT and Harvard University have identified two optical structures within a limpet's shell that give its blue-striped appearance.

A new study has shown that the dottyback, a small predatory reef fish, can change the colour of its body to imitate a variety of other reef fish species, allowing the dottyback to sneak up undetected and eat their young.

Triploid Atlantic salmon are not more susceptible to sea louse infection than diploid fish, according to a study by Benedikt Frenzl et al, University of Stirling, UK.

Salmon recovery and the potential detrimental effects of dams on fish have been attracting national attention due to the environmental and economic implications. In recent years acoustic telemetry has been the primary method for studying salmon passage, but no…

The manner and routes of dispersal vary with the species and the ecological conditions. Many fish form shoals to avoid predation. Shoaling with familiar conspecifics affords the fish an even greater advantage by increasing the benefit for relatives. This promo…

Fish Vet Group's PondDtox contains unique bacteria (Paracoccus pantotrophus), which are highly effective in anaerobic conversion of toxic Hydrogen Sulphideinto non-toxic sulfate in benthic environments.

The importance of aquaculture in Asia goes beyond its relatively high contribution to the worldwide aquaculture output. Fish products feature prominently in local diets of Southeast Asia. Around 31 million people are employed in aquaculture in Asia, writes Rui…

The level of success we get in catfish farming is usually tied to the level of management practices we decide to put in place in conjuction with the level of efficiency we achieve from our culture systems, writes Lanre Ogunsina, Fish Unlimited. Part 2 and 3 co…

Tilapia has drawn much attention lately and been recognized by FAO as the most potent culture fish species in supplying human protein source of the Century.

Each year the shrimp industry suffers losses of more than US$1 billion dueto early mortality syndrome or acute hepatopancreatic necrosis (EMS/AHPND), anemerging disease caused by the bacterium Vibrio parahaemolyticus. Pedro Encarnaao, PhD and Jutta Zwielehner,…

Atlantic halibut (Hippoglossus hippoglossus) is a marine, cold-water flat fish that is farmed in Canada, Iceland, the UK and Norway. The development of halibut aquaculture began in the 1980's but it is only in recent years that many of the challenges in farmin…

Eel farming is a growing industry across the globe and is becoming more lucrative each year.

Fishing takes place in the high seas and Exclusive Economic Zones (EEZs) of maritime countries. Closing the former to fishing has recently been proposed in the literature and is currently an issue of debate in various international fora, write U. Rashid Sumail…

Feed represents the largest production cost in tilapia (Oreochromis niloticus). As a result of ever increasing raw material prices, nutritionists are under continuous pressure to reduce formulation cost and search for cheaper, alternative ingredients, write Gi…

As many documents now point towards the creation of Chorkor smoking kilns for smoking fish, Adrian Piers, Agriculture, Fisheries and Aquaculture Consulting, East African Community and SADC Region, shares his views on other fish smoker designs which have been w…

The Asia-Pacific Association of Agricultural Research Institutions (APAARI) has published this Success Story on Rainbow Trout, Oncorhynchus mykiss, which has successfully been experimented and promoted for commercial production by the Nepal Agricultural Resear…

In a collaborative research project between the University of Stirling and Rothamsted Research, scientists have developed genetically modified (GM) plants that can produce up to 20 per cent of eicosapentaenoic acid (EPA), one of the two omega-3 LC PUFA conferr…

Penaeid shrimp production is under continuous threat by bacterial and particularly viral infections which have caused disastrous collapses of the industry in all major shrimp producing countries. This article reports on recent progress in the development of fe…

Opening up a crab to find it empty of meat is disappointing, not to mention a waste of a good crab. Queensland Boating and Fisheries Patrol district manager Rob McDonald said there are methods people can use to assess whether their prized crab is full or empty…

The level of success we get in catfish farming is usually tied to the level of management practices we decide to put in place in conjuction with the level of efficiency we achieve from our culture systems, writes Lanre Ogunsina, Fish Unlimited in Part 1.

This article, by Oleksandr A. Byelashov & Mark E. Griffin (Omega Protein Inc.), contributes to the ongoing debate regarding the sustainability of fishmeal and fish oil in aquaculture diets. It demonstrates why the Fish In, Fish Out metric, which is frequen…

Becoming self-sufficient in food production what better way is there for countries to sustainably feed their growing populations? But, scratch the surface of this potential solution, and it doesnt really stack up.

University of Georgia Tifton Campus student Amanda Miller is educating her community about sustainability through aquaponics one homegrown meal at a time.

The aquaculture industry is undergoing a significant change, and one that presents a tough challenge to overcome. In Canada, fisheries along the west coast have been losing millions of pounds worth of stock and revenue due to the rising acidity of the coastal …

Florfenicol (FLR) is a commonly used antibiotic for the treatment of bacterial diseases in white shrimp Litopenaeus vannamei. In this study, Xianyun Ren, Luqing Pan and Lin Wang, Ocean University of China, evaluated the tissue distribution and elimination, cha…

This FAO technical paper showcases current wisdom in aquaponics, focusing on small-scale production. The publication, written in a style designed to be digestible by a non-technical reader, is the product of practical experience with small-scale and commercial…

Not all species may suffer from climate change. A new analysis shows that Dolly Varden, a species of char common in southeast Alaska, adjust their migrations so they can keep feasting on a key food source - salmon eggs - even as shifts in climate altered the t…

This paper describes a study in which environmental manipulation of salmon swimming depth was tested in an attempt to reduce farm infection of Atlantic salmon, Salmo salar by the salmon louse, Lepeophtheirus salmonis, write B. Frenzl et al, University of Stirl…

With interest in culturing tilapia in marine habitats increasing, producers must obtain tilapia capable of growing well in seawater, writes Mohammad T. Ridha, Kuwait Institute for Scientific Research. Taken from the Global Aquaculture Advocate, a Global Aquacu…

At the Galician coast, mussels are cultured on vertical ropes attached to floating rafts, which are cleaned in situ with tars or waterproof paints. The present study, by F. San Juan et al, University of Vigo, Spain, analyses the composition and the toxic risk …

In a study by Rachel Cristina Prehl Alves et al, Universidade de So Paulo, the authors evaluated the stunning effectiveness of thermonarcosis, carbon dioxide narcosis and electronarcosis by assessing the electrical brain activity of tilapia. Although results v…

The aquaculture industry is increasingly reliant upon industrially compounded aquafeeds, and the availability of cost-effective feedstuffs is a serious constraint to continued growth within the aquaculture sector, write Jesse T. Trushenski and Alexis Bergman.

Synthetic microplastics (?5-mm fragments) are emerging environmental contaminants that have been found to accumulate within coastal marine sediments worldwide. The ecological impacts and fate of microplastic debris are only beginning to be revealed, with previ…

Problems with lice and losses can be heavily reduced by placing farmed fish in closed systems until the fish reach a weight of one kilo. This has been shown by research conducted by scientists at Uni Research in Bergen, Norway.

Scientists are keen to sort farmed salmon and provide them with exercise right from the early stages of their growth, in order to equip them to deal with the stress of transfer to the sea.

Achieving and maintaining good water quality through all stages of production plays a major role in overall fish health and performance.

A 50-day feeding trial was conducted to determine the effects of dietary bamboo charcoal (BC) on ammonia (NH3-N) excretion and growth performances of Pangasius hypophthalmus, write M Sadiqul Islam et al, Bangladesh Agricultural University.

This guide from Infonet-Biovision provides easy to follow information on hatchery management and tilapia fingerling production.