Friday, April 12, 2013

12/04/13: ISA spread through red blood cells according; optimum time to treat sea lice; cage culture in The Philippines

ISA spread through red blood cells according to new research. In her doctoral thesis, Maria Aamelfot studied the how the interaction between Atlantic salmon and the ISA virus leads to the development and spread of ISA in fish.
Aamelfot focused to finding out what type of cells are receptive to the virus and what type of cells  become infected by the virus. Her findings describe the ability of the virus to infect or damage certain cells, tissues or organs.

The Bureau of Fisheries and Aquatic Resources Region 2 (BFAR-2), The Philippines is proposing a new technique in fish cage operations based on the result of the harvest field day demo and research project at the Magat Reservoir.
Information Officer Max Prudencio said that the demo and research project, which showcased the viability of fish cages in the Magat Aquapark, aims is to revitalize the once-vibrant aquaculture industry in said area. 

A cooperative report between the salmon industry, environmental groups and academic institutions in British Columbia has identified the optimum time to treat for sea lice to protect wild fish migrating at the north end of Vancouver Island.
The paper, published this month in PLOS One, identifyied the optimum time to treat for sea lice to protect wild fish migrating at the north end of Vancouver Island.
Researchers developed a mathematical model for the population dynamics of parasitic sea lice (Lepeophtheirus salmonis) on domesticated populations of Atlantic salmon (Salmo salar) in the Broughton Archipelago region of British Columbia. The model was fit to a seven-year dataset of monthly sea louse counts on farms in the area to estimate population growth rates in relation to abiotic factors (temperature and salinity), local host density (measured as cohort surface area), and the use of a parasiticide, emamectin benzoate, on farms.
Atlantic salmon
Atlantic salmon (Photo credit: Wikipedia)
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