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巴西龟疯狂围剿观赏鱼

2017-09-04 15:30:58   中国青年网

河中的死鱼

河中的死鱼

“别再往北小河公园放巴西龟了行吗?!4只巴西龟咬烂一条大鱼后走了。”昨天,目睹了放生一幕的市民细数了自己看到的危害。尽管放生者发微博称,“内心安宁喜悦,祈愿众生安康幸福……”这种说法却遭到网友们的怒怼:放生是好事,但要守规矩。

同一件事两种声音

昨天下午,记者来到了望京北小河公园,公园的湖面上,有星星点点翻了肚的小鲫鱼,这些鱼的遗骸多是残缺的。西岸附近的水面上,突然泛起了一串水波纹,一条没了脑袋的死鱼游得正欢,银白色的身子在水里若隐若现,待它终于不动了,两只碗口大的巴西龟从鱼尾下探出头来,见无头的死鱼再无什么“油水”,才分别游走。

在望京论坛上,也有网友晒出了类似的照片,并表达了愤慨之情。这位网友说,昨天很多人都看到了4只巴西龟在水里撕扯一条大鱼的场面。最近一段时间,在北小河公园水系放生巴西龟的人很多,这些巴西龟在水里没有天敌,简直肆意妄为,很多鱼都被咬死了,希望大家不要再胡乱放生,同时也希望公园方面能加强管理。

放巴西龟的人不少

“今天还有两位大姐来放生‘王八’呢,都来不及阻止,黑塑料袋一松口,扑通几声,人家就放完了。”北小河公园的保安如是说,他们说的“王八”指的就是巴西龟。

记者向北小河公园管理处的工作人员了解情况,工作人员坦言,近年来到北小河公园放生的人确有不少,而且放龟的明显比放鱼的还多,现在水里的巴西龟可能有几十只,有时候爬上岸,还会被游人带走。北小河公园的水体由井水、中水混合,起初园方只在水里放了一批观赏鱼,后来的小鱼都是自己繁殖出来的。

“公园有要求,保安看见放生的肯定要管,但偷偷放生的情况,也很无奈。”工作人员一番话后,记者询问之后是否会有相关的办法,处理已经放生在水系内的巴西龟时,工作人员并未明确表态。

放生得立规矩

近年来,包括巴西龟及其他物种的野蛮放生行为,媒体进行过太多报道。记者注意到,目前本市很多公园内,尚未把放生作为明确禁止项目。

专家解释,巴西龟的可怕之处并不在于攻击性,而是作为外来物种,在没有天敌的情况下,它有着适应能力、繁殖能力极强的特性。在水中过度繁殖的巴西龟,会很快破坏水系的生态平衡,耗尽水中养分,间接导致其他水生鱼类、植物死亡,这样的情况比直接攻击更严重。

同样是在望京地区,今年6月记者曾报道过望和公园香风湖环境提升后的一次“放生”活动,将什么样的鱼投放入湖中有利于维持水系生态平衡,投放多少能够同时达到观赏和环保效果,这些细节要经过反复的论证和精确测算,才能得出科学的结果。本报记者 景一鸣 文并摄 J168

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