Archive for the “Fisheries” Category

Shrimp is the most important commodity, by value, in the international seafood trade. The shrimp industry has grown exponentially in the last decades, and growth is expected to continue for years to come.

A new and better technology to culture shrimps is being used by many enterprising shrimp farmers nowadays. Green water technology is a technique that cultures shrimps in water that is abundant in phytoplankton i.e. Chlorella, turning the water green hence, its name.
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The culture of giant freshwater prawn, Macrobrachium rosenbergii, had been suffering setbacks due to insufficient supply of quality post-larvae. As early as early 80’s, the municipality of Calumpit In Bulacan pioneered a hatchery but failed to produce post-larvae. Calumpit, is known for the giant freshwater prawn popularly known as “ulang”. In fact, the species is proudly engraved in the municipality’s emblem.

Recently, the giant freshwater prawn which thrives in the rivers of Pampanga and Bulacan was identified by the National Fisheries Research and Development Institute as Macrobrachium rosenbergii rosenbergii. It grows comparably to the Thailand strain, Macrobrachium rosenbergii dacqueti. Read the rest of this entry »

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Mlilkfish (Chanos chanos) or “bangus” as they are called locally comprise the bulk of aquaculture fish production in the Philippines. They are hardy and fast growing, and can be raised in fresh and brackish water ponds and pens. Being one of the cheapest sources of protein, milkfish are acceptable to all socioeconomic strata In the country.

Biological Characteristics

Milkfish are:

  • Filter feeders. They have no teeth but have fine gill rakers that concentrate microplankton.
  • Benthic feeders. They nibble or browse on adhering or even floating lab-lab, periphyton, or lumut
  • Daytime feeders. They feed less at night. Read the rest of this entry »

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Kappaphycus is a red seaweed commonly called ‘guzo’ or ‘tambalang.’ There are three common strains which are appropriate for farming. These are brown, green and red strains. Kappaphycus is naturally found below 0 tide line on sandy-rocky to corally substrate in the tropical intertidal and subtidal waters. Farming of this seaweed started in southern Mindanao in the mid ’60s, and has expanded to other parts of the Philippines and to other countries like Indonesia, Fiji, Micronesia, Vietnam, China, and South Africa.

Kappaphycus forms 80% of the Philippine seaweed export and is one of the three marine-based export winners of the country. Read the rest of this entry »

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Pangasius is commonly called as river or silver stripped catfish, Siamese shark, sutchi catfish, or swai catfish. This fish species live in freshwater and endemic to the Mekong basin. It is a riverine catfish belonging to the members of the family Pangasidae. It exhibits fast growth when cultured given a good environment.

Growing pangasius is far more easy than growing tilapia and bangus. This freshwater fish can be cultured in fishponds, concrete fish tanks, fish cages and fish pens. For earthen ponds, experts recommend around 1,600 sq. m or at least 400 sq.m. Suitable depth is about 1.5 to two meters. Read the rest of this entry »

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