Breeding Tuna Outside The square.

A new tuna breeding project which is low capital investment, low risk, with high probability of success. Its outside the square and utilizes nature's natural attributes to maintain and develop sustainable aquaculture in pristine waters.
By: Patrick von Stieglitz
 
Aug. 6, 2010 - PRLog -- Sustainable aquaculture …………… maintaining pristine environments

August 5th 2010


Press Release…………………………Breeding Yellowfin Tuna

The BlueWin Tuna Company Pty Ltd is a small Australian Company with extensive hands on experience in tuna farming in Australia, The Mediterranean Sea and Baja California.

I have always believed in an at sea development program for breeding tuna and I have searched the world, seeking out what I consider a suitable location to begin a project like this.

Attached to this email is a one page power point that basically describes a location that I have chosen for development in the Republic of Palau in the North Western Pacific.

Step one is to move my small 36 research ship up to Palau later this year as a base.

Step two is to work with the local authorities to establish a tourist based, tuna park brood stock in this location utilizing milkfish from local aquaculture as a feed source.

It is my intention to utilize natures, natural attributes to assist with development
for example, the use of animals like Beche de Mer, clams and local seaweeds to help keep the location pristine and replace dissolved oxygen

I anticipate identifying and utilizing a local seaweed, and mangrove roots as a mechanism for the tuna eggs to attach to while developing to hatching stage.

My research on some of the issues indicate the following

Water quality variables (dissolved oxygen (DO), pH and total ammonia would be excellent in the area as it's  pristine waters.  Recording DO levels by setting  DO probes in the water throughout the year or by choosing periods in a year (Jan, March, June and Sep.) if season plays some roles in DO levels.  

There must be planktons (phyto- and zooplankton) available for initial feeding and for early life stage and assessment on life feeds available in the area should be carried out before deciding the final site for 'open tuna hatchery'.

Seaweeds release oxygen into the water, but at night they respire as such they may not be the best to rely on for oxygenation, based on daily fluctuations.

However they will certainly provide  substrata for all sorts of animals – and perhaps eggs. Research organizations in Australia  are currently researching probiotic effects that may positively influence fish growth and survival.

The first issue that requires testing, using a few different species of seaweeds that are found locally in Palau.
Different seaweeds have substantially different structure, and some will be better than others for holding/trapping particles. These assays would be relatively straight forward and would help  select species of seaweeds to culture. Focusing on those that are commercially cultivated (ie established protocols) makes the most sense (for Palau this would mean testing ~5 species).

A secondary consideration (and a significant one at that) is that the seaweeds will remove dissolved nutrients, in a similar way that beche de mer will remove solid particles. The problems with the beche de mer is that it will eat particles and then excrete dissolved nutrients. This will mean that you will have seaweed growth in your area. The best way to control  this is to have a controlled standing stock of desired seaweed rather than risk nuisance species compromising your operation.

I have explored the site by boat, by helicopter and swam on the entrance and if the tuna show an inclination to leave (which I doubt) I anticipate the use of a bubble curtain to keep the bay closed and maintain easy access.

The vision relating to my project is not capital intensive compared to other breeding projects around the world, a very important goal of mine.  After tuna reach a stage in their early life cycle they will sold out of country for grow out in either ocean cages which will utilize ocean currents like the Kuroshio Current to drift the cages towards Asia while the tuna grow out.

Alternatively they will be transported by either/or, boat/ship or plane to a local grow out facilities around the world.

Why Yellowfin?

At this point there is approx 20 breeding projects developing around the world for bluefin tuna in order to satisfy the sashimi consumptions needs of the world and replace depleting stock.

The grow out rate for Yellowfin is half that of Bluefin and no matter which way you want to look at the equation, costs will rule the future.
I have heard many stories of yellowfin tuna spawning in mangroves in the western pacific. This suggests that the fertilized eggs will attach themselves to mangrove roots and seaweed for the 10 or so days that it takes for the eggs to hatch.

If you find yourself interested in investing either technical knowledge or financial capability in this type of project please contact me at sashimipatrick@bigpond.com

Compared to all the rest of the world this particular site selection provides the opportunity for a low cost development program.

Breeding tuna is set to become the largest new food production industry of the 21st century.

# # #

The BlueWin Tuna Company Pty Ltd is a small Australian Company with extensive hands on experience in tuna farming in Australia, The Mediterranean Sea and Baja California.
Maine and tuna breeding research small ship operator. Working Outside the Square
End
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Industry:Agriculture, Business, Food
Location:Launceston - Tasmania - Australia
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