Limestone springs support productive ecosystems and fisheries, yet aquaculture may modify or impair these ecosystems. We determined trout hatchery organic contribution to spring creek sediments and foodwebs with natural abundance stable isotope methods. Hatchery feed, waste, and trout were significantly enriched in delta(13)C relative to autotrophs and wild fish. Spring creek sediments were enr...

We report here the genome sequence of Vibrio campbellii LB102, isolated from the broodstock rearing system of a shrimp hatchery in India. Sequence analysis revealed the presence of effector toxins of the type III (YopT, sharing 39% identity with Yersinia pestis) and type VI (VgrG-3 and hemolysin coregulated protein of V. cholerae) secretion systems.

the study of changes the amount of protein, lipid, carbohydrates, fiber, ash and moisture of farmed litopenaeus vannamei at different stages of growth was performed. samples at the stages of post larvae 12, shrimp with 1, 2 and 3 months age, grow-out and market shrimp at the end of the period were provided from hatchery and breeding centers in khuzestan province. chemical composition w measured...

Research in probiotics for aquaculture is at an early stage of development and much work is still needed. The principal bacterial groups tested as probionts in the culture of shrimp, crab, oyster and fish have been Vibrio, Pseudomonas, Bacillus, and several lactobacilli. The available information is inconclusive, since few experiments with sufficiently robust design have been conducted to permi...

A study was conducted on culture practices of shrimp at farmers’ level in Bagerhat District. Investigation was based on a sample of 123 shrimp farmers from the seven Thanas (Fakirhat, Mollahat, Sadar, Rampal, Mongla, Chitalmari and Kachua) of the District, 73.17% farmers produced shrimp with white fishes. Farmers (54.47%) started to culture during 2000-2004 in this area. The culture period was ...

A culture system for the commercial production of the seaweed Gracilaria parÕispora using shrimp-farm effluents for fertilization and floating cage-culture for grow-out has been developed on Molokai, HI. This two-phase system produces high-quality products for direct human consumpŽ . tion. The mean relative growth rates RGRs of effluent-enriched thalli in the cage system ranged y1 Ž y1. from 8....

Abstract This study used a random selection of 150 extensive shrimp farms in three areas Bangladesh (Paikgacha, Dacope, and Chokoria) questionnaires to examine the quality, hygiene, sanitation practices that farmers satisfy national international concerns. The majority (95.67%) all sites did not quality hatchery-bred post larvae (PL) felt hatchery chemicals or antibiotics producing PL supplied ...

Five size groups of hatchery reared cod (2–109 g) and three size groups of wild cod (447–2213 g) were reared at a range of constant temperatures. All groups were fed to satiation, the hatchery fish on dry feed and the wild fish on capelin and shrimp. The optimal temperature for growth decreased linearly with fish weight on a log scale from 17 C for 2 g fish to 7 C for 2000 g fish. Similarly, th...

Effluent water from shrimp ponds typically contains elevated concentrations of dissolved nutrients and suspended particulates compared to influent water. Attempts to improve effluent water quality using filter feeding bivalves and macroalgae to reduce nutrients have previously been hampered by the high concentration of clay particles typically found in untreated pond effluent. These particles i...

Nitrite accumulation in shrimp ponds can pose serious adverse effects to shrimp production and the environment. This study aims to develop an effective process for the enrichment of ready-to-use nitrite-oxidizing bacteria (NOB) inocula that would be appropriate for nitrite removal in brackish shrimp ponds. To achieve this objective, the effects of nitrite concentrations on NOB communities and n...