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小知识
鲎(hòu),俗称马蹄蟹,是在古生代就出现的“活化石”,有4亿多年的历史。现存4种:中国鲎Tachypleus tridentatus、南方鲎Tachypleus gigas、圆尾蝎鲎Carcinoscorpius rotundicauda、美洲鲎Limulus polyphemus。繁殖季节,雌雄往往成对活动。雌鲎背着雄鲎在潮间带挖穴产卵。
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雌鲎背负雄鲎 / Breese Greg, U.S. Fish and Wildlife Service,
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圆尾蝎鲎Carcinoscorpius rotundicauda / Sönke Bonde, Public d
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