Capacity for developing and managing genetically improved strains of tilapia in Africa including broodstock management and quarantine

Human and institutional capacities for developing and managing genetically improved tilapia in Africa are discussed. Discussions are related particularly to the status of hatcheries, rearing facilities, research and extension services, training in genetic enhancement, and fish transfer in major aquaculture countries in Africa. The leading aquaculture producing countries are Egypt and Nigeria along with nine other countries with some intermediate levels of fi sh production. The availability of quality fry and fingerlings constitutes a major constraint.

Capacity for conservation of African aquatic biodiversity

Human and institutional capacities for developing and managing genetically improved tilapia in Africa are discussed. Discussions are related particularly to the status of hatcheries, rearing facilities, research and extension services, training in genetic enhancement, and fish transfer in major aquaculture countries in Africa. The leading aquaculture producing countries are Egypt and Nigeria along with nine other countries with some intermediate levels of fish production. The availability of quality fry and fingerlings constitutes a major constraint.

Bangus fry resource assessment in the Philippines.

The report is the result of an investigative study on the scarcity of milkfish fry in the Philippines, a collaborative effort of BFAR, SEAFDEC, PCAMRD and ICLARM. The study aimed to monitor fry production in selected sites in the Philippines for a period of one year; assess the current demand for milkfish fry; and provide on-the-job training on data collection and recommend a system for continuous collection of data on fry production.

Livelihood strategies of tiger shrimp post larvae collectors in backkhali river estuary, cox’s bazar of Bangladesh

This study aim was to understand the livelihoods of tiger shrimp (Penaeus monodon, Fabricius, 1798) post larvae collectors in the Backkhali river estuary areas under Cox’s Bazar district in Bangladesh during November 2010 to April 2011 where shrimp fry are caught. There are about 130-140 families and about 1000 people are living in the adjacent area. Most of the fry collectors have no land or house. They build house on Government (khas) land near the coast, the housing is mainly with earthen/bamboo or polythen.

Simple method for backyard production of snakehead (Channa striata Bloch) fry.

The snakehead (Channa striata ) is a common freshwater fish species in Malaysia. Details are given of a simple technique for breeding this species, suitable for small-scale farmers practising backyard aquaculture. Two techniques were used to induce spawning - the first used water level manipulation to simulate rain and the second used injected with human chorionic gonadotropic hormone. The former, more natural, spawning technique was found to provide a viable alternative for the small-scale farmer, being much simpler than hormone injection.

An overview of goby-fry fisheries

A number of diadromous gobies, notably Sicydium spp. and Sicyopterus spp., support fisheries based on return migrations of postlarvae (fry) to rivers. Most species are tropical, although close relatives occur in Japan. The life history of this group has often been incorrectly described as catadromous (spawning in the sea or estuary), whereas anadromous (spawning in rivers) would be more accurate.

Health management in marine fish and shrimp hatcheries with special reference to immunostimulants (an overview)

Egyptian Government expresses efforts to provide aquaculture industry with high quality fish and to prevent diseases outbreak. The production of larvae and fry is still unpredictable for some species, owing to the lack of control of the microbiota in the rearing systems. Using conventional approaches such as the use of disinfectants and antimicrobial drugs, have had limited success in the prevention or cure of aquatic disease. Also, use of antibiotics does not constitute a sustainable solution, and may result in microflora imbalance for the larvae.

Effect of pond supplemented with chicken manure on bacterial build up and its antimicrobial resistance, besides the quality and shelf-life of cultured Nile tilapia (Oreochromis niloticus)

Twelve thousand fries of Nile Tilapia (<i>Oreochromas niloticus</i>) were stocked in 6 ponds, three ponds were supplemented with chicken-manure and others with artificial diet. The Aeromonas. and <i>Pseudomonas spps.</i> were isolated from all ponds while the <i>Salmonella</i> and <i>Enterococcus spps.</i> were isolated from the manure supplemented ponds. As a General observation, the antimicrobial resistance of the isolated bacteria was high with oxytetracyclin, low with ciprofloxacin.

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