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.

Effect of garlic, Echinacea, organic green and vet-yeast on survival, weight gain and bacterial challenge of overwintered Nile Tilapia fry (Orechromis niloticus)

The purpose of this study was to examine the effect of some immunostimulants and probiotics on the survival rate, final weight, and disease resistance of overwintered tilapia fry. There were five treatments: T1 (control) fed a balanced diet (35% protein) without additives. Treatments 2 to 5 were fed diets supplemented with 4% garlic, 4 g/kg Echinacea, 4 g/kg Organic Green or 4 g/kg Vet-Yeast, respectively.

Commercial production and marketing of Nile tilapia (Oreochromis niloticus) fry in Chonburi and Chachoengsao provinces, Thailand.

Nile tilapia (Oreochromis niloticus) fry production and marketing in the provinces of Chonburi and Chachoengsao, Thailand are discussed, covering historical background, production methodology, transfer of technology to other region, and future trends.

Response to bi-directional selection for frequency of early maturing females in Nile tilapia (Oreochromis niloticus)

The present study was carried out to investigate a simple method for recording the occurrence of early maturing females in Nile tilapia at a fixed time after stocking and to estimate the response to bi-directional selection for this trait and a possible correlated response in growth performance.


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