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Transurethral needle ablation (also called TUNA or transurethral radiofrequency ablation) is a technique that uses low energy radio frequency delivered through two needles to ablate excess prostate tissue. A cystoscope / catheter deploys the needles toward the obstructing prostate tissue and is inserted into the urethra directly through the ...
In recent years ICCAT adopted a draconic recovery plan for Atlantic bluefin tuna in the eastern portion of their range, which led to the reduction of the total allowable catches from 27,500 in 2007 to 13,400 tons in 2014. Apart from reduced total allowable catches, the recovery plan also introduced strict monitoring, reporting, and control ...
The mean trophic level is calculated by assigning each fish or invertebrate species a number based on its trophic level.The trophic level is a measure of the position of an organism in a food web, starting at level 1 with primary producers, such as phytoplankton and seaweed, then moving through the primary consumers at level 2 that eat the primary producers to the secondary consumers at level ...
Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.
Bigeye tuna recovery efforts. Prior to the annual meeting of the International Commission for the Conservation of Atlantic Tunas (IATTC) in November 2010, the ISSF urged decision-makers to focus on bigeye tuna stocks rather than increasing the focus on bluefin tuna, another Atlantic species in decline.
Here's what you need to know before you make your next sandwich. It's a trusted, easy, go-to lunch. A few pieces of bread, some mayo, dijon, celery, and a simple can of tuna. Or so you thought. As ...
The Atlantic bluefin tuna (Thunnus thynnus) is a species of tuna in the family Scombridae. It is variously known as the northern bluefin tuna (mainly when including Pacific bluefin as a subspecies), giant bluefin tuna (for individuals exceeding 150 kg [330 lb]), and formerly as the tunny. Atlantic bluefins are native to both the western and ...
Tuna being processed with an Oroshi hocho tuna knife at the Tsukiji fishmarket. Fish is a highly perishable food which needs proper handling and preservation if it is to have a long shelf life and retain a desirable quality and nutritional value. [3] The central concern of fish processing is to prevent fish from deteriorating.