广东珠海双胞旋沟藻Cochlodinium geminatum赤潮事件分析  

The outbreak of Cochlodinium geminatum bloom in Zhuhai,Guangdong

作　　者：欧林坚[1] 张玉宇[2] 李扬[2] 王华接[3] 谢学东[3] 荣志明 吕颂辉[1,2] 齐雨藻[1,2] 

机构地区：[1]暨南大学赤潮与水环境研究中心,广东广州510632 [2]华南师范大学生命学院,广东广州510631 [3]广东省海洋与渔业环境监测中心,广东广州510220 [4]珠海市海洋与渔业环境监测中心,广东珠海519000

出　　处：《热带海洋学报》2010年第1期57-61,共5页Journal of Tropical Oceanography

基　　金：国家自然科学基金项目(40806058);广东省自然科学基金项目(7300662);中韩合作研究项目(PI-08-2);厦门大学近海海洋环境科学国家重点实验室项目(MEL0403)

摘　　要：多环旋沟藻Cochlodinium polykrikoides赤潮在全球频繁爆发。2006年10-11月间,在广东珠海海域爆发的双胞旋沟藻Cochlodinium geminatum赤潮则较为少见。双胞旋沟藻赤潮发生于富营养的近岸水体,赤潮发生区内水温变化范围23.41-27.54℃,盐度变化范围15.49-17.92。双胞旋沟藻的细胞密度随温度和盐度的升高而显著升高,最高细胞密度达1.6×106个.L-1。在赤潮发生后期,海区水温下降及群落中红色中缢虫Mesodinium rubrum数量的上升,可能是导致双胞旋沟藻赤潮衰亡的重要原因。Blooms of Cochlodinium polykrikoides occur frequently around the world. During October to November, 2006, an unusual bloom of Cochlodinium geminatum occurred in the coastal eutrophicated waters in Zhuhai, Guangdong. The water temperature and salinity in the bloom zone ranged between 23.41-27.54℃ and 15.49-17.92 psu, respectively. The density of C. geminatum increased significantly with water temperature and salinity and reached to the highest density of 1.6×10^6 ind·L^-1. During the latter period of bloom, the decrease of water temperature and the increase of density of Mesodinium rubrum might be responsible for the dissipation of the C. geminatum bloom.

关 键 词：双胞旋沟藻 多环旋沟藻 赤潮 珠海 近岸水体 

分 类 号：P735.53[天文地球—海洋生物学] P762.33[天文地球—海洋科学]