Applications of Microalgal Biotechnology for Disease Control in Aquaculture

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Abstract: Aquaculture industries, and in particular the farming of fish and crustaceans, are major contributors to the economy of many countries and an increasingly important component in global food supply. However, the severe impact of aquatic microbial diseases on production performance remains a challenge to these industries. This article considers the potential applications of microalgal technology in the control of such diseases. At the simplest level, microalgae offer health-promoting benefits as a nutritional supplement in feed meal because of their [...]


Ecuadorian shrimp farming: A success story

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Located between Colombia and Peru on the Pacific cost of the South American continent, Ecuador is a small Latin American country, with only 277,000 square kilometers of land and 2,200 km of coastline. Nevertheless, Ecuador is one of the world’s major players in farmed shrimp production, especially if we look at the shrimp production ratios relative to the land surface or to the length of coastline of the considered countries. Shrimp farming in Ecuador started in 1969 with the extensive [...]


Global shrimp survey goal 2016

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Asia production Shrimp production grew steadily in east Asia through 2011, averaging 6 percent annual growth from 2008 to 2011. The GOAL surveys indicate that production declined from 3.45 MMT to 3.25 MMT in 2012 (down 5.8 percent) and 3.21 MMT in 2013 (down 1.1 percent) due to the impact of EMS in China, Thailand, Vietnam and Malaysia (Fig. 2). Production increased substantially in 2014 to 3.49 MMT (up 8.5 percent) mostly due to the larger harvests reported in China, [...]


Aquaculture Europe 2016: Shrimp Disease Causes Millions in Losses Across Asia

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ASIA – Shrimp diseases such as white spot and AHPND have caused devastating losses for farmers across Asia in the last few years. Speaking at Aquaculture Europe 2016, 20-23 September, in Edinburgh Scotland, Dr Andy Shinn, Fish Vet Group, attempts to work out the true economic losses to farmers. Asia’s crustacean aquaculture is expected to exceed 5.08 million tons in 2016, an increase of 5.46 per cent. However, although there has been an increase in production, the level of growth [...]


Pond Bottom and Feed Management

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1. Pond bottom management Risk factors The study did not find any direct relationship between the condition of pond sediment and risk of disease outbreaks or production. However, in other studies the occurrence of black and toxic bottom sediments has been shown to adversely affect shrimp health and lead to disease outbreak or poor production. The study showed there is a relationship between ponds with higher stocking densities and feeding rates, and poor pond bottom conditions. Therefore, as farmers stock with higher [...]


Energy Use In Shrimp Farming – Study In Australia Keys On Aeration, Pumping Demands

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Summary: While intensive shrimp farms in Australia and elsewhere are sensitive to rising energy prices, global intensification and farming innovations have led to significant improvements in shrimp farm energy efficiency. Important among the changes was the global switch to zero-exchange production of white shrimp. Black tiger shrimp producers can adopt some features of the model for white shrimp, such as the use of genetically selected, high-health stocks, but it remains to be seen how far down the zero-exchange path [...]


Whitespot disease WSSV

: 1896

The MPEDA/NACA study clearly shows that WSD is not caused by any one factor. Rather a number of risk factors influence the occurrence of WSD in the farm. These risk factors occur throughout the shrimp cropping cycle and in general terms, fall into the following categories during the different stages of the crop cycle: • season of stocking; • pond preparation; • pond filling and water preparation; • seed quality and screening; • water management; • pond bottom management; • feed management; and • disease treatments. The risk factors at [...]