broodstock Articles
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The EMS Scare
Shrimp farming is not an easy business for all. Despite this the trend for global production remains on an upward slope. Recently there has been a lot of talk about EMS, or Early Mortality Syndrome, also known as AHPNS or Acute Hepatopancreatic Necrosis Syndrome. This syndrome is characterized by large losses of post-larval shrimp within the first 30 days of stocking. While there have always been ...
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AHPN inferences based on behavior of Vibrio bacteria
Summary: Vibrio parahaemolyticus, the pathogen associated with acute hepatopancreatic necrosis (AHPN), has both toxic and benign strains. It inhabits the stomachs of shrimp in a biofilm, which protects it from antibiotics and other treatments. As with V. cholera, V. parahaemolyticus tolerates a range of salinities, pH and temperatures. Both species readily piggyback on marine plankton and may be ...
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IRTA Broodstock management - Case Study
The study aimed to describe the reproductive behaviour of gilthead seabream (Sparus aurata) in captivity. Twenty-four mature gilthead seabream, divided in two tanks, were utilized for the present study. Reproductive behaviour was recorded using submersibles cameras. A total of 67 spawning events were analysed. The mean duration time that gilthead seabream spent spawning was 54 ± 4 min/day, ...
By IRTAmar
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Aquacultural biotechnology in Thailand: the case of the shrimp industry
For the past decade, Thailand has been the leading exporter of shrimp and shrimp products to the world market and the income generated contributes substantially to the Thai economy. There are more than one million people employed directly or indirectly by the industry. At present, there is forceful competition due to price differences among major shrimp growing countries and due to new ...
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Affects of White Spot Syndrome Virus (WSSV) in Shrimp Farming (Part 3)
White Spot Syndrome Virus (WSSV) is now and has for some time been the most serious threat facing the shrimp farming industry in Asia. It is an extremely virulent pathogen with a large number of host species. This disease is probably the major cause of direct losses of shrimp farming in Asia. Similarly, in Latin America, losses due to WSSV have been substantial. In addition, indirect losses in ...
By Vinnbio
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Enhanced resistance to BCWD in Troutlodge strains
Joint research of the United States Department of Agriculture (USDA) and Troutlodge has shown that Genomic Selection can double the prediction accuracy for Bacterial Cold Water Disease (BCWD). Application of Genomic Selection for BCWD resistance to three generations of Troutlodge broodstock resulted in a challenge survival increasing from 33.5% in 2015 to 78.3% in 2019. This is a staggering ...
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Investing in aquaculture: a road to riches or a path to poverty?
Aquaculture is growing at a greater rate globally than any other agribusiness sector. It is widely predicted that with 6 to 8% annual growth rate continuing well into the foreseeable future, aquaculture will offer good investment opportunities. However, just like any other endeavor, there are some very good reasons why what some see as a pot of gold at the end of the rainbow is empty and full of ...
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Affetcs of Yellow Head Virus (YHV)
Yellow Head Virus (YHV) Yellow Head Virus was the first major viral disease problem to affect Asian shrimp farms when it was diagnosed as causing extensive losses for shrimp farming. YHV and its close relatives GAV and LOVV are single stand RNA viruses, similar to TSV. The first records of this virus were from P. monodon ponds in Eastern Thailand, it had moved to Southern Thailand and was ...
By Vinnbio
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Affects of Viral Disease in Shrimp Farming
In Shrimp Disease control, they are Six viruses were known to affect Penaeid shrimp, but there are more than 20 viruses were identified as having affected wild stocks and commercial production. The OIE now lists seven viral diseases of shrimp in the Aquatic Animal Health Code, which are considered to be transmissible and of significant socio-economic and/or public health importance. These ...
By Vinnbio
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