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Can Natural Strategies Effectively Combat EMS?
Each year the shrimp industry suffers losses of more than US$1 billion due to early mortality syndrome or acute hepatopancreatic necrosis (EMS/AHPND), an emerging disease caused by the bacterium Vibrio parahaemolyticus. Pedro Encarnaçao, PhD and Jutta...
The Impact of Costal Acidification to the Aquaculture Industry
The aquaculture industry is undergoing a significant change, and one that presents a tough challenge to overcome. In Canada, fisheries along the west coast have been losing millions of pounds worth of stock and revenue due to the rising acidity of the...
How to Achieve Good Water Quality Management in Aquaculture
Water quality is the most important factor affecting fish health and performance in aquaculture production systems. Good water quality refers to what the fish wants and not what the farmer thinks the fish wants. This means that farmers must understand...
Water Quality Parameter Analysis for the Feasibility of Shrimp Culture
Muhammad Kasnir et al, Indonesia Moeslim University, Indonesia, carried out physicochemical studies to asses water resource in Mangara Bombang District, South Sulawesi in relation to their potential for shrimp aquaculture use....
Effects of Nitrite Exposure on Rabbitfish
Nitrite is toxic to fishes and is often encountered in recirculation aquaculture systems. Accordingly, the nitrite tolerance of potential aquaculture candidates needs to be assessed before the fish can be farmed in land-based recirculation systems. In...
Chronic Exposure to High Nitrate Concentration Reduces Growth and Affects Health of Juvenile Nile Tilapia in RAS
Due to nitrate accumulation during nitrification and low water-exchange rates in recirculating aquaculture systems (RAS), nitrate levels can build up. Hendrik Monsees has therefore investigated the effect that exposose to high nitrate concentration has...
Effects of Temperature, Digestion on the Swimming Performance of Juvenile Chinese Bream
To test whether digestion affected swimming performance in an active forager and whether the possible effects varied with temperature, Jing Peng et al, Chongqing Normal University, investigated the critical swimming speed (Ucrit) and the resting and active...
Water Quality Monitoring and Management for Catfish Ponds
Any fish farmer that wants to record a high survival of fish and better growth in record time in their ponds must endeavour to pay good attention to pond water quality, writes Lanre Ogunsina....
Preliminary Trials on the Reproductive Performance, Growth and Survival of the Giant Tiger Prawn Under the Hypersaline Conditions of Abu Al Abyad Island, United Arab Emirates
Omer M. Yousif, Kumar K.M. Krishnankutty and Abdul Fatah Ali, Aquaculture and Marine Studies Center, Abu Al Abyad Island, Department of the President's Affairs, looked at the reproductive performance, growth and survival of wild and pond-reared giant...
Hypoxia and Acidification Have Additive and Synergistic Negative Effects on the Growth, Survival, and Metamorphosis of Early Life Stage Bivalves
Low oxygen zones in coastal and open ocean ecosystems have expanded in recent decades, a trend that will accelerate with climatic warming. Christopher J. Gobler et al, Stony Brook University, US, experimentally assessed the consequences of hypoxic and...
Atlantic Cod Actively Avoid CO2 and Predator Odour, Even After Long-term CO2 Exposure
The rising atmospheric CO2 level is continuously driving the dissolution of more CO2 into the oceans, and some emission scenarios project that the surface waters may reach 1000 ?atm by the end of the century, write Fredrik Jutfelt and Maria Hedgärde,...
Salt Stratification Determines the Fate of Fish Stocks in the Baltic Sea
In the Baltic Sea, two cod stocks evolve independently. Also the juveniles of two economically important flatfish species, flounder and plaice, live there within limited space. This is possibly due to the irregular distribution of water masses of different...
Elevated CO2 Affects Embryonic Development and Larval Phototaxis in a Temperate Marine Fish
As an effect of anthropogenic CO2 emissions, the chemistry of the world’s oceans is changing. Understanding how this will affect marine organisms and ecosystems are critical in predicting the impacts of this ongoing ocean acidi?cation, write Elisabet...
Evaluation of Growth Performance, Feed Utilization Efficiency and Survival Rate of Juvenile Nile Tilapia, Reared at Different Water Temperature
Kassaye Balkew Workagegn, Hawassa University, Ethiopia, conducted this study to investigate the growth performance, feed utilization efficiency and survival rate of juvenile Oreochromis niloticus reared in aquaria at different water temperature....
Early Exposure of Bay Scallops to High CO2 Causes a Decrease in Larval Shell Growth
Ocean acidification has a variable impact on the growth and survival of marine invertebrates. Larval stages are thought to be particularly vulnerable to environmental stressors, and negative impacts of ocean acidification have been seen on fertilization...
 
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