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May 5, 2014

 

Vietnam

More on Lobster Farming

 

Vietnam’s lobster farms use either fixed cages or submerged metal cages to culture their animals.  Pond culture has been investigated, but declared unworkable.

 

Fixed Cages on the Shoreline

• The framework is made of salt-resistant wood.

• Wooden stakes 4-5m length are embedded every 2 meters to create a rectangular shape.

• Each cage normally has a cover.

• The cage may be floating.

 

Submerged Cages

• The framework is made of iron rods with a diameter of 15-16mm.

• The bottom shape is rectangular or square with an area normally between 1-16 square meters.

• The height is 1.0-1.5 meters.

• The cage has a cover and a feeding pipe.

• Submerged cages are commonly used to nurse lobster seed, and for growout in some areas.

 

Juvenile Mortality

• Mortality from puerulus to juvenile is about 40–60%.

• If lobster losses during the nursery stage could be reduced to only 10%, Vietnam’s total annual lobster production could be doubled without any more seed lobsters having to be caught.

 

Species Selection

Panulirus ornatus is the major species cultured in Vietnam.

• There is a trend to diversify to both P. ornatus and P. homarus.

• Disease problems are greater with P. ornatus.

P. homarus is more robust and able to withstand environmental challenges.

P. ornatus has a longer growout period than P. homarus.

• A strong and growing market exists for both species.

P. homarus is the dominant species farmed in Indonesia.

 

Hatchery Developments

• Hatchery technology for P. ornatus reached proof-of-concept stage in 2006 in Australia.

• Production of pueruli and juveniles has been repeated in subsequent years at the research level.

• Second (F2) and third (F3) generation larvae have been produced.

• These significant steps towards the commercialization of tropical spiny lobster hatchery
technology suggest mass production of seed may soon occur.

• Commercial lobster seed production would enable significant expansion.

 

Information: Dr. Clive Jones, The Australia Centre for International Agricultural Research, GPO Box 1571, Canberra ACT 2601, Australia (phone 07-4057-3782, fax 07-4057-3813, email clive.jones@daff.qld.gov.au, webpage http://aciar.gov.au).

 

Source: Spiny Lobster Aquaculture in Vietnam: Status, Constraints and Opportunities.  Dr. Clive Jones (James Cook University) and Dr. Le Anh Tuan (Nha Trang University),  No Date.  Viewed on the Internet on May 4, 2014.

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