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美国渔业生物学家指出,某些鱼类可借助其头骨内天然的磁性物体对其导航.美刊《海洋渔业》今年年初报道,科学工作者发现,在鲣鱼、黄鳍金枪鱼和金枪鱼的额骨之中或其上有磁性物体存在.这种具有足够强度的磁性物体,可使这些鱼类具有一种对磁性图象(magnetic map)十分敏锐的感觉.通过对黄鳍金枪鱼进行的实验,取得了这一磁性反应的证明.报道引述了美国国家海洋渔业局檀香山
US fisheries biologists point out that some fish can navigate with their natural magnetic objects in their skulls, and the U.S. publication Marine Fisheries reported earlier this year that scientists found that in the case of anchovy, yellowfin tuna and tuna The existence of magnetic objects in or on the bone, which are magnetic objects of sufficient strength, gives these fish a sense of keenness on the magnetic map.Through experiments on yellowfin tuna, The proof of this magnetic response was obtained.The report quoted the US National Marine Fisheries Directorate Honolulu