Aquaculture & Fisheries Articles

Non Nutritive Feed Additives

Feed formulation is essentially applied nutrition. A number of terms and expressions are introduced that will be put to practical use as information is presented on the nature and qualities of various feedstuffs and the information presented on the nutrient requirements of fish. Precise understanding of these terms is essential to their correct application. One must recognize that some of these terms have a built-in error that cannot be escaped. Read the full story here.

Photoperiodism In Fishes

For most animals the seasonally changing pattern of day length provides the most accurate year-on-year index of time and many fish use the increasing and decreasing components of this light cycle to coordinate development. In order to use light in this way, however, firstly the light must be perceived, secondly, day length change must in some way be measured and lastly, this information must be transduced into a suitable 'message' for integration by the newoendocrine cascade which initiates and then modulates development. Photoperiod is the ability of organisms to and use the body length as an anticipatory cue to time seasonal events in their life histories. Read the full story here.

Biological water treatment in aquaculture by means of "Mutag BioChip™ RAS Process"

Aquaculture or fish farming means the artificial breeding and raising of aquatic creatures. They include fish as well as crustaceans and shellfish, which are raised and stocked under controlled conditions by using techniques and technologies offering an increased level of productivity which cannot be realized under natural conditions. Due to the increased demand for freshly caught fish and considering the imminent overfishing of the oceans, aquacultures attach growing importance while there are different types of aquaculture installations. Read the full story here.

Non Viral Gene Delivery Approaches In Fish

Gene delivery using nonviral approaches has been extensively studied as a basic tool for intracellular gene transfer and gene therapy. Since its development, gene therapy has held great promise in the field of medicine. The ability to introduce functional genes into mammalian cells containing otherwise defective copies offers many new possibilities for the treatment of commonly acquired and inherited fish diseases such as autoimmune disorders and monogenic diseases. The development of efficient gene therapy depends on an efficient transfer of therapeutic genes into a cell to replace or silence defective ones associated with fish disease. Read the full story here.

Seaweed Mariculture: Scope and Potential

Marine algae, commonly known as seaweeds are one of the major potential living as well renewable resources of the oceans. Seaweed resources available around the world include more than 1000 species, from which only a hundred species are being commercially used. Seaweeds are mainly utilized in phycocolloid industries, but many edible types of seaweed are rich in proteins, vitamins, minerals and trace metals. In the past few decades, the research in the marine areas has yielded vast knowledge on seaweed utilization. Read the full story here.

HOW TO SECURE YOUR PREPAYMENT

When you need to make an advance payment to a new supplier, it is always sensible to secure the return of the money in case the goods are not shipped. Read the full story here.

NOAA and University of New Hampshire Cooperative Institute for Mariculture and Fisheries developed OOA (Open Ocean Aquaculture) to demonstrate the feasibility of off-shore aquaculture and to further the establishment of a viable commercial aquaculture industry in New England and other regions of the United States. Their website contains several videos and photo galleries to demonstrate the different areas of study.

OOA Videos may be found here:

• Finfish Aquaculture: Summer flounder were chosen as the first species, and they were stocked into the offshore pens in both 1999 and 2000;
• Aquaculture: Shellfish culture demonstrates the technical and economic feasibility of culturing bivalve molluscs in exposed oceanic environments;
• Engineering: The engineering component of the Open Ocean Aquaculture project demonstrates the development of engineering tools for analysis, designing, computer modeling, physical model testing, and full scale evaluation of fish cages and their associated mooring systems.

The Open Ocean aquaculture project home may be found here: OOA Home.