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盘点孕育后代雄性动物:除草剂致雄青蛙产卵(5)

2010-03-12 08:12:26 中华网论坛

    5. 雄叶海龙

盘点孕育后代雄性动物:除草剂致雄青蛙产卵

雄叶海龙

    能孕育后代的雄叶海龙也是海马的近亲,和海马和尖嘴鱼一样同属海龙科。叶海龙是伪装大师,它全身由叶子似的附肢覆盖,就像一片漂浮在水中的藻类,并呈现绿、橙、金等体色。

    每年的8月和隔年的3月是叶海龙的繁殖季节。在交配期间,雌性的叶海龙会将一定数量(一般是150-250个)的叶海龙卵排放在雄叶海龙尾部的由两片皮褶成的育婴囊中,而雄叶海龙则要担负起孵化卵的重任。叶海龙卵一般需要在雄性个体的育婴囊中待上大约2个月的时间,才可以孵化成为幼体叶海龙。

    当分娩时,雄叶海龙将幼体叶海龙从尾部甩出。通常,雄叶海龙需要24到48小时来进行分娩。只有5%的小叶海龙能存活下来,小叶海龙刚一生下来就能独立生存。

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