10 . the results of the study showed that predatory fish , such as shark , tuna and swordfish , had the highest concentration of mercury while seafood other than fish , particularly shellfish , was identified as the main dietary source of cadmium and inorganic arsenic 10 .是次研究结果显示,捕猎鱼类,如鲨鱼金枪鱼和剑鱼的含汞量最高。此外, "鱼类以外的海产"尤其是贝介类被视为是镉及无机砷的主要来源。
There is one important exception to this advice , which is that pregnant and nursing mothers , and young children are advised to limit their consumption of large fish such as swordfish and shark as a precautionary measure to minimise their consumption of mercury for more information on this visit 虽然如此,我们还是建议怀孕和脯乳的母亲除外,而且年幼的孩子应限制食用一些大鱼像是旗鱼和鲨鱼等,以将汞摄取减到最少来作为预警。
The schnute model work well in full explored stocks such as scenario 1 , 3 , 4 and 5 , especially in low biomass stocks such as scenario 3 , but not suitable to the under explored stocks such as scenario 2 . the w - h model generally performed well in all kind of scenarios especially in scenario 1 , 4 , and 5 . in the swordfish , xiphias gladius , fishery , estimation of w - h model and d - fox model produced msy about 14000 ton , very near the result of prager in 1996 四种剩余产量模型在充分捕捞且管理良好的渔业1中评估效果较好而在捕捞不足的渔业2中效果较差; schnute模型在充分捕捞的渔业如渔业1 、 3 、 4 、 5 、尤其是在低生物量的渔业3中评估效果较好,但不适合评估未充分捕捞的渔业,如渔业2 ; walters - hilborn模型( w - h模型)适用于各种渔业,尤其是渔业1 、 4 、 5 ;在过度捕捞渔业中如渔业3 、 4 ,模型对参数q的估计较其它参数接近真值;在北大西洋箭鱼( xiphiasgladius )渔业的评估中, w - h模型和d - fox模型对msy的估计约为14000吨,接近于prager ( 1996 )的结果。
And just because a region receives above - average deposition doesn ' t mean that it will have high levels of methyl mercury , the form that builds up in long - lived predatory fish such as trout , pike , tuna and swordfish . “ the areas with the most problems may not have the highest levels of deposition , ” explains mercury expert david krabbenhoft of the u . s 而且某一地区不会因为承受的汞沉降高于平均值,就表示该处也会有较高浓度的甲基汞,这种形式的汞会在寿命较长的掠食鱼类体内逐渐堆积,如鳟鱼、狗鱼、鲔鱼和旗鱼等。
large toothless marine food fish with a long swordlike upper jaw; not completely cold-blooded i.e. they are able to warm their brains and eyes: worldwide in warm waters but feed on cold ocean floor coming to surface at night 同义词:Xiphias gladius,