نتایج جستجو برای: tuna fish
تعداد نتایج: 106741 فیلتر نتایج به سال:
OBJECTIVES Our aim was to investigate the relation between fish consumption and incidence of congestive heart failure (CHF). BACKGROUND The incidence and health burden of CHF are rising, particularly in older persons. Although n-3 fatty acids have effects that could favorably influence risk of CHF, the relation between fish intake and CHF incidence is unknown. METHODS Among 4,738 adults age...
some heavy metals are dangerous to health and there is rising concern about the quality of foodstuffs in some parts of the world. fish, particularly tuna fish, can concentrate huge quantities of several metals from water and they even play a significant role in human nourishment. objectives: in this study, the concentrations of mercury and four trace metals in five brands of canned tuna samples...
restaurants. Japan consumes about 80 per cent of Pacific and Atlantic bluefin tuna. The country has been accused of stifling efforts to enhance protection of the tuna stocks. In negotiations last year, a bid by Monaco, backed by several other European countries, to introduce a ban on commercial fishing of Atlantic bluefin tuna failed because of perceived support from several smaller nations for...
Research surveys attempting to use acoustic devices (i.e. echo sounders and sonar) to avoid bycatch and STFO are significantly hindered by the lack of any way to accurately verify what is actually under their vessel and being recorded on their instruments. Purse seine fishermen have a distinct advantage as they can refine catch estimates with every successful set and no doubt become quite profi...
Tag release and recapture data of bigeye (Thunnus obesus) and yellowfin tuna (T. albacares) from the Hawaii Tuna Tagging Project (HTTP) were analyzed with a bulk transfer model incorporating size-specific attri tion to infer population dynamics and transfer rates between various fishery components. For both species, the transfer rate estimates from the offshore handline fishery areas to the lo...
Research surveys attempting to use acoustic devices (i.e. echo sounders and sonar) to avoid bycatch and STFO are significantly hindered by the lack of any way to accurately verify what is actually under their vessel and being recorded on their instruments. Purse seine fishermen have a distinct advantage as they can refine catch estimates with every successful set and no doubt become quite profi...
We adapted a visual census method, mainly used in demersal and reef fish studies, to characterize fish communities associated to drifting fish aggregating devices (FADs) in the Western Indian Ocean. Drifting FAD associated fishes from both equatorial (Seychelles) and tropical waters (Reunion Island) were examined by divers. A total of 32 species (belonging to 16 families) were observed associat...
The views and opinions expressed or implied in this article are those of the author (or authors) and do not necessarily reflect the position of the National Marine Fisheries Service, NOAA. Abstract—Most of the drifting fish aggregating devices (DFADs) used in industrial tropical tuna purseseine fisheries are equipped with satellite linked echosounder buoys, which provide fishing crews with remo...
Species belonging to the genus Thunnus are pelagic predator fishes, commonly known as tuna. The species within this genus are of commercial value, and six of them are considered the most valued in world trade (D.M., MIPAAF, 31 Gennaio 2008). Thunnus species originate from a variety of geographic areas, and for this reason the different species can be characterized by the presence of different b...
Stable nitrogen and carbon isotopes were used to investigate trophic ecology in tropical marine bird and fish communities from Reunion Island, western Indian Ocean. Firstly, isotope signatures in the liver of Barau's petrels Pterodroma baraui, Audubon's shearwaters Puffinus lherminieri bailloni, and white-tailed tropicbirds Phaethon lepturus were used to compare their trophic levels and determi...
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