温度,光照和盐度对产麻痹性贝类毒素藻类生长及产毒的影响  

Effects of temperature,light intensity and salinity on growth and toxin production of paralytic shellfish poisoning toxins-producing dinoflagellates

作　　者：叶志林 曹洁茹[1] 吴霓[1] 江天久[1] YE Zhi-lin;CAO Jie-ru;WU Ni;JIANG Tian-jiu(Red tide and marine biology research center, Jinan University, Key Laboratory of water eutrophication and red tide prevention and control in Guangdong Province, Guangzhou 510632, China)

机构地区：[1]暨南大学赤潮与海洋生物学研究中心水体富营养化与赤潮防治广东省高校重点实验室,广东广州510632

出　　处：《海洋环境科学》2018年第3期321-325,348,共6页Marine Environmental Science

基　　金：国家自然科学基金(41276091);国家海洋公益专项(201305003-2);国家973项目(2010CB428702)

摘　　要：为探究温度、光照和盐度对产麻痹性贝类毒素(PSP)藻类生长及产毒的影响,本文选取了4株产麻痹性贝毒的藻种(塔玛亚历山大藻(Alexandrium tamarense)香港株(ATHK)、微小亚历山大藻(A.minimum)台湾株(AMSY)、链状亚历山大藻(A.catenella)南海株(ACSY)和链状裸甲藻(Gymnodinium catenatum)防城巷株(GCFC))在不同光照(60、120和200μmol/(m^2·s))、温度(16、22和28℃)和盐度(25、30和35)条件下生长及产毒的变化。结果显示,22℃最适宜4株藻的生长。低温可促进PSP的产生,除GCFC外,其余3株藻的单位细胞产毒量均随温度的升高而降低。ATHK和AMSY的生长与光照正相关。AMSY和GCFC的单位藻细胞产毒量与光照强度正相关,光照为120μmol/(m^2·s)时ATHK和ACSY产毒量最高,弱光均不利于4种藻产毒。盐度30条件下ATHK,AMSY和GCFC长势较好,高盐度(盐度35)促进ACSY的生长。ATHK的单位细胞产毒量均随盐度的升高而增加,AMSY和ACSY在高盐和低盐条件下产毒量均较大,GCFC则在盐度为30条件下产毒量最高。Experiments were carried out to investigate the effects of light intensity（ 60,120 and 200 μmol/（ m^2·s））,temperature（ 16,22 and 28℃） and salinity（ 25,30 and 35） on growth and paralytic shellfish poisoning（ PSP） toxins production by Alexandrium tamarense Hong Kong strain（ ATHK）,A. minimum Taiwan strain（ AMSY）,A. catenella Nanhai strain（ ACSY） and Gymnodinium catenatum Fangchenggang strain（ GCFC）. The results showed that 22℃ was the optimum growth temperature for all the four strains. Low temperature promoted PSP toxins production in all of the four strains. Except for GCFC,PSP toxins production in the other three strains were reduced with the temperature rising. The growth of ATHK and AMSY were positively correlated with light intensity. Toxin production in AMSY and GCFC were also positively correlated with light intensity. Toxicity of both ATHK and ACSY were also affected by light intensity,with maximum toxicity obtained at the light intensity of 120 μmol/（ m^2·s）. Lowlight intensity inhibited toxin production in all of the four strains. ATHK,AMSY and GCFC all grew well at the salinity of 30,while ACSY grew well at the salinity of 35. Toxin production in ATHK increased with the increasing salinity. Both higher and lower salinities promoted the toxins production in AMSY and ACSY. A high level of toxin was detected in GCFC at the salinity of 30.

关 键 词：麻痹性贝类毒素 光照 温度 盐度 

分 类 号：S944.349[农业科学—水产养殖] X17[农业科学—水产科学]