By Thai Ngoc Chien Depart. of Fish exploitation and resource management Research Institute for...

By Thai Ngoc ChienDepart. of Fish exploitation and resource managementResearch Institute for Aquaculture No.3E-mail: [email protected]

mailto:[email protected]

FUNCTIONS AND DUTIES

Survey aquatic environment, inland and coastal natural resources. Assess the impacts of aquaculture to the surrounding environments

Investigate and apply advanced techniques for aquaculture, exploitation, and conservation (e.g. stock enhancement)

Collect and conserve native and economically important introduced species, and generate valuable hybrids

Study production of brackish and marine micro algae and seaweed as food for aquatic animals

Study post-harvest, formulated feeds, and food processing from freshwater and marine products for domestic and export markets

INTRODUCTION

MINISTRY OF FISHERIES RESEARCH INSTITUTE FOR AQUACULTURE

No.3

33 Dang Tat, Nha Trang – Khanh Hoa Tel: (+84) 058 831138 Fax: (+84) 058 831846

INTRODUCTION

FUNCTIONS AND DUTIES

Test the quality of seed, and feasibility of using feed, and bio-products in aquaculture Develop appropriate fishing gear and apply modern fishing technologies with the aim of sustainable fisheries development Provide guidance on technical, economic and environmental aspects to managers and aquaculturists Transfer techniques to farmers via workshops and training courses Cooperate in national and international research and training. Educate post-graduate students and technical personnel


No.3


SUSTAINABLE AQUACULTURE DEVELOPMENT


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- To minimize the environment impacts from aquaculture, Folke and Kautsky (1992) suggested fish polyculture with water filters such as bivalve and seaweed.- Patrick (2000) proposed that in aquaculture we should combine different species who feed at different trophic levels; this will help to minimize the nutrient loads and maximize using water and food resources.- This principal is based on feeding behavior and living space.

SUSTAINABLE AQUACULTURE MODELS


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In 2004-2005, Research Institute for Aquaculture No.3 carried out a polyculture technology research project.

The project introduced 5 polyculture models as follows:1) Polyculture of grouper, green mussel and seaweed2) Polyculture of lobster, seabass, sandfish, green mussel

and seaweed3) Polyculture of lobster, sandfish, green mussel and

seaweed4) Polyculture of Babylon snail, sandfish, green mussel

and seaweed5) Polyculture of Babylon snail, lobster, seabass,

sandfish, green mussel and seaweed

PRINCIPLES…

Green mussel

Babylonia snail

Seaweed

Sea cucumber

Particulate Organic matter

Dissolved Nutrients (N, P)

Benthic Organic matter

Oxygen

- Improve income at the same time, so we do not waste time and labour cost.

- Maximize usage of water resources so we can grow other species without investment in building cages and ponds or reduce the investment cost.

- Different species can use the waste or discharges from each other as food, therefore we can decrease the food cost.

- We do not use chemicals or antibiotics, so it is very secure food for consumers.

- Reduce the waste loads and eutrophication within cultured area.

- Keep ecosystem balanced

What are the benefits of polyculture/integrated culture?


No.3


1. Fishing: high fishing pressure, destructive fishing2. Destruction of ecosystems and habitats: Mangroves

and wetland ecosystems have been converted into aquaculture ponds. Dam constructions for irrigation and building of shipping harbors.

3. Water pollution: Industrial, agricultural and domestic waste discharges reduced the biodiversity and spawning of animals.

4. Disease outbreak: Diseases may cause increasing problems in connection with more intensive production systems.

PROBLEMS


No.3


Polyculture of Babylonia snail, Sea Cucumber, Green Mussel and Seaweed

Polyculture of Grouper, Mussel and Seaweed

Polyculture of lobster, sandfish, green mussel and seaweed

Author:

MSc.NGUYEN CO THACH

MSc. DAO VAN TRI


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APPLIED TECHNOLOGIES

Penaeus monodon

SEED PRODUCTION AND

COMMERCIAL CULTURE

UPGRADING CULTURE

Author:

Dr. NGUYEN THI BICH THUY


No.3



Panulirus ornatus

SEED PRODUCTION

Author:

Dr. NGUYEN THI BICH THUY


No.3



Portunus pelagicus

SEED PRODUCTION AND

COMMERCIAL CULTUREAuthor:

MSc. NGUYEN CO THACH


No.3



Scylla serrata

SEED PRODUCTION AND

COMMERCIAL CULRURE

Author:

Dr. NGUYEN THI XUAN THU


No.3



Babylonia areolata

SEED PRODUCTION AND

COMMERCIAL CULTURE

Author:

Dr. NGUYEN THI XUAN THU


No.3



Chlamys nobilis

SEED PRODUCTION AND

COMMERCIAL CULTURE

Author:

Prof.Dr. NGUYEN CHNH


No.3



Pinctada maxima

SEED PRODUCTION AND

COMMERCIAL CULTURE

Author:

Prof. Dr. NGUYEN CHINH


No.3



Perna viridis

SEED PRODUCTION AND

COMMERCIAL CULTURE

Author:

MSc. LA XUAN THAO


No.3



Anadara granosa

SEED PRODUCTION AND

COMMERCIAL CULTURE

Author:

Dr. LE DUC MINH


No.3



Haliotis asinina

SEED PRODUCTION AND

COMMERCIAL CULTURE

Author:

Rayner Pitt

and Nguyen Dinh Quang Duy


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Holothuria scabra

INTRODUCTION

SOME NEEDS TO MOVE FORWARD SUSTAINABLE AQUACULTURE DEVELOPMENT


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- The results of polyculture research are realistic and easy to apply for the farmers. -Encourage the international co-operation to work on sustainable aquaculture development, such as, re-planning, solving pollutions.-Research on environmental carrying capacity of the bays where the aquaculture exist to give recommendations to the local managers for re-planning or recovering shrimp aquaculture industry. - Conserve biodiversity; build marine protected area (MPA).


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