An overview of the current scientific knowledge available on climate change implications for fisheries and aquaculture is provided through three technical papers that were presented and discussed during the Expert Workshop on Climate Change Implications for Fisheries and Aquaculture (Rome, 7–9 April 2008). A summary of the workshop outcomes as well as key messages on impacts of climate change o...

In this report we present a comparative study realized on different aquaculture water samples collected from several fish farms in Tunisia. For each water sample, significant physiochemical parameters such as conductivity, pH, NH4 + , Na + , Ca 2+ , F and NO3 were determined using a potentiometric multi-sensor system named "electronic tongue". Experimental analysis data were standardized and su...

Alterations to the structure of the fisheries industry have become necessary in Japan due to low levels of capture fisheries production, an aging population, environmental concerns, and increased worldwide demand for marine food products. In accordance with these developments, the Fisheries Agency, Ministry of Agriculture, Forestry, and Fisheries, established the new Basic Plan for Fisheries in...

Antimicrobials used in salmon aquaculture pass into the marine environment. This could have negative impacts on marine environmental biodiversity, and on terrestrial animal and human health as a result of selection for bacteria containing antimicrobial resistance genes. We therefore measured the numbers of culturable bacteria and antimicrobial-resistant bacteria in marine sediments in the Calbu...

The demand for fish for food, recreation, and ornamental aquariums is steadily increasing. Natural fish populations have declined during the last several decades because of environmental degradation and over-fishing. This has resulted in an increased effort in the development of techniques for hatchery production of fish. Traditional aquaculture species such as trout, catfish, common carp, gold...

A bioflocculant-producing bacterium, Bacillus megaterium SP1, was isolated from biofloc in pond water and identified by using both 16S rDNA sequencing analysis and a Biolog GEN III MicroStation System. The optimal carbon and nitrogen sources for Bacillus megaterium SP1 were 20 g L-1 of glucose and 0.5 g L-1 of beef extract at 30°C and pH 7. The bioflocculant produced by strain SP1 under optimal...

Aquaculture is equated with the reduction of poverty in discourse advanced by intergovernmental agencies such as FAO. This discourse demands support for the promotion small-scale aquaculture through project-based interventions. There is a lack of convincing empirical evidence to support the efficacy of development interventions of this type however. Meanwhile, huge increases in cultured freshwa...

1. Current State of Aquaculture and Environment 2. Aquaculture Water Constituents 3. Waste Water Discharge Guidelines for Aquaculture 4. Introduction to Recirculating Aquaculture Systems (RAS) 5. Recirculating Aquaculture System Applications 6. Primary Clarification – Suspended Solids removal 7. Bacterial Processes 7.1 Nitrification 7.1.1 Nitrition 7.1.2 Nitration 7.2 Denitrification 8. Filtrat...

Consumer demand for affordable fish drives the ever-growing global aquaculture industry. The intensification and expansion of culture conditions in the production of several finfish species has been coupled with an increase in bacterial fish disease and the need for treatment with antimicrobials. Understanding the molecular mechanisms of antimicrobial resistance prevalent in aquaculture environ...

One of the most common techniques for producing mono-sex populations is steroid-induced sex inversion. This involves the administration of synthetic androgens (to produce male populations) or estrogens (to produce female populations). Several methods of steroid administration are possible, including injection, microencapsulation, feeding of steroid, and immersion of fry in steroid solutions. Th...