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作 者:林朗聪[1] 王朝晖[1] 梁菊芳[1] 江晓亮[1]
机构地区:[1]暨南大学生命科学技术学院,水体富营养化与赤潮防治广东普通高校重点实验室,广东广州510632
出 处:《海洋环境科学》2013年第1期20-22,62,共4页Marine Environmental Science
基 金:国家自然科学基金项目(41076093)
摘 要:在实验室条件下,研究了温度和盐度对条纹环沟藻(Gyrodinium instriatum)生长的影响。在28个温度(15~30℃)和盐度(0~35)组合中,条纹环沟藻在20℃和盐度25下生长最好。适宜生长温度为20~25℃,盐度为20~25。在适宜的盐度下,藻细胞对高/低温度的忍耐能力增强,同样适宜温度也可促进藻细胞对高/低盐度的抵抗能力。条纹环沟藻不能在无盐环境生长,但在适温下(20~25℃),能在盐度为10的条件下生长。研究结果说明条纹环沟藻是一种广盐生物,能适应较低的盐度,这也是其赤潮多在低盐的河口海域发生的重要原因。The effects of temperature and salinity on the growth of the red tide dinoflagellate G yrodinium instriatum were examined un- der the laboratory conditions. Exposed in 28 different combinations of temperature ( 15 -30 ℃ ) and salinity ( 0 - 35 ), G. instriatum was exhibited the maximum growth at a combination of 20 ℃ and a salinity of 25. The optimum growth was observed at temperatures ranging from 20to25 ℃ and at salinities from 20 to 25. The resistance to low and high temperatures was increased under optimum sa- linity and vice versa. The organism could not grow at the salinity of 0 at all temperatures,but grew at the salinity of 10 at temperatures between 20 and 25 ℃ It is noteworthy that G. instriatum is an euryhaline organism and can live under low salinity. It might be the im- portant reason why its blooms generally occurred in the estuaries with low salinity.
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