威海双岛湾人工鱼礁区刺参大面积死亡原因初探  

Investigation of massive death of sea cucumber in artificial reef zone of Shuangdao Bay,Weihai

作　　者：刘国山[1,2] 蔡星媛[1] 佟飞[1] 王亮[1] 张秀梅[1] 

机构地区：[1]中国海洋大学水产学院,青岛266003 [2]天津市水产研究所,天津300221

出　　处：《渔业信息与战略》2014年第2期122-129,共8页Fishery Information & Strategy

基　　金：农业行业专项(201003068);海洋公益项目(201305043)

摘　　要：2013年9月4日开始,威海双岛湾人工鱼礁区15 m以深水域,刺参出现大面积死亡。为了解致死原因,于9月6日开展了相关调查。结果表明,有害浮游生物与刺参死亡的相关性较小,缺氧水层的出现可能是刺参死亡的主要原因。在所调查的海区,缺氧水层的上界约为13 m^15.5 m,下界至海底。夏季的高温、多雨和少风导致温跃层和盐跃层出现,水体垂直循环受阻后在海底形成缺氧层。建议增殖生产中合理安排增殖放养密度,对海区增殖生物状况和底层溶解氧进行实时监测,开展预警、预报,合理安排采捕生产,以减少因底层缺氧造成的经济损失。Massive death of sea cucumber appeared from September 4th, 2013, in the artificial reef zone of Shuangdao Bay, Weihai, with a depth of more than 15 m. And surveys have been done on September 6th to determine the cause. Results showed that the relationship between poisonous plankton and massive death was negligible, while the hypoxia water or dead zones （dissolved oxygen ≤ 2.0 mg/L） at the bottom might explain. The upper limit of the hypoxia layer was ca. 13 m - 15 m, and the lower limit was the bottom. High temperature, massive rain and less windy weather, thermoeline and halocline might lead to hypoxia water. Reasonable density of sea cucumber should be considered in mariculture at different depths, and continuous monitoring of DO at bottom should be done in summer and early autumn. In order to reduce loss from hypoxia at the bottom, forecast and scientific arrangements should be considered.

关 键 词：刺参 溶解氧 沉积物耗氧量 温跃层 盐跃层 

分 类 号：S968.9[农业科学—水产养殖]