Prorocentrum minimum bloom and its possible link to a massive fish kill in Bolinao, Pangasinan, Northern Philippines
Prorocentrum minimum bloom and its possible link to a massive fish kill in Bolinao, Pangasinan, Northern Philippines
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DOI：
10.1016/j.hal.2004.08.006
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发表时间：
2005-03-01
期刊：
影响因子：
6.6
通讯作者：
Takayama, H
中科院分区：
文献类型：
--
作者：
Azanza, RV;Fukuyo, Y;Takayama, H
2002年1月31日至2月4日，在菲律宾北部北方潘加西南的Bolinao首次记录到最大细胞密度为4.7 x 10（5）个细胞/L的原甲藻最小水华，该地区多年来一直在养鱼圈和网箱中密集和广泛地养殖遮鱼。鱼类死亡几乎与生物繁盛同时持续，在生物繁盛下降时达到高峰。网箱和围栏内缺氧是导致鱼类死亡的根本原因。由于鱼类死亡造成的损失估计为600万比索（相当于120，000美元），其中仅包括养殖鱼类死亡的价值。网箱和围栏内缺氧是导致鱼类死亡的根本原因，无法确定原甲藻的毒性。这些细胞的微小刺均匀分布在整个瓣表面。间纹宽，有许多垂直于瓣缘的脊。细胞轮廓比典型的P. minimum细胞更圆，与P. balticum相似。今后对该生物体进行研究的建议与监测和管理干预措施结合在一起，以减轻或可能防止今后类似事件的损害。(C)2004 Elsevier B. V.保留所有权利。
For the first time, a Prorocentrum minimum bloom at a maximum cell density of 4.7 x 10(5) cells/L was recorded on January 31 to February 4, 2002 at Bolinao, Pangasinan, Northern Philippines where intensive and extensive aquaculture of Chanos chanos (milkfish) in fish pens and cages has been practiced for years now. The fish kill, which lasted almost simultaneously with the bloom of the organism had its peak when the organisms bloom was declining. Lack of oxygen in the cages and pens was the fundamental cause of the fish kill. Losses due to the fish kill were estimated at six million pesos (equivalent to US$ 120,000), which includes only the worth of dead cultivated fish. Lack of oxygen in the cages and pens was the fundamental cause of the fish kill, and toxicity of the Prorocentrum could not be confirmed. The cells had minute spinules equally all over the surface of valves. Intercalary striae were wide with many ridges perpendicular to valve margin. Outline of cells was rounder than typical P. minimum cells and similar to P. balticum. Recommendations for future research on the organism are incorporated together with monitoring and management interventions in order to mitigate or possibly prevent damages in similar future events. (C) 2004 Elsevier B.V. All rights reserved.