不同温度、盐度下浒苔(Entromorphra prolifera)群体增长和生殖的显微观测  

Microscopic Observation on Population Growth and Reproduction of Entromorphra prolifera Under Different Temperature and Salinity

作　　者：张晓红[1,2] 王宗灵[1,2] 李瑞香[1,2] 李艳[1,2] 王晓[1,2] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061 [2]海洋生态环境科学与工程国家海洋局重点实验室,山东青岛266061

出　　处：《海洋科学进展》2012年第2期276-283,共8页Advances in Marine Science

基　　金：国家重点基础研究发展计划--我国近海藻华灾害演变机制与生态安全(2010CB428703);国家科技支撑项目--浒苔绿潮藻暴发应急处置关键技术研究与应用(2008BAC49130);青岛近海浒苔绿潮形成的生物学与生态学机制(2008T30)

摘　　要：为研究温度、盐度对浒苔(Entromorphra prolifera)群体增长和生殖的影响,在实验室内设10个温度梯度、每个温度下又设4个盐度梯度,比较了不同培养条件下藻体的湿重、特定生长率(SGR)。浒苔生长对温度的变化较盐度的变化为敏感。在同一盐度下,浒苔SGR随温度的增加呈先升高后降低的趋势。随着盐度的降低,最适生长温度有升高的趋势。20℃、S为26时浒苔SGR最高,达37.80%。SGR高的实验组最先进入生殖生长期,随之,SGR骤降,藻体形态也发生的变化。通过对这一变化过程的观测研究加深对绿潮暴发及演化过程的理解。In order to study the effects of temperature and salinity on the growth and reproduction of Entromorphra prolifera, ten temperature levels（5-32 ℃） and four salinity levels （14-32） under each temperature level were set, and the algae wet weight and specific growth rate （SGR） under different culture conditions were studied. The growth of the algae was sensitive to the changes of temperature, other than to that of salinity. At the same salinity, the SGR had a trend of increase followed with a decrease. With the decrease of the salinity, the increase of the temperature was suitable for growth. E. prolifera had a highest SGR of 37.80% at 20 ℃ and salinity of 26. Those groups with high SGR entered reproductive phase first and followed with a sharp decrease of SGR and morphological changes of the algae. This observation will help us deeply understand the green algae bloom and evolvement process.

关 键 词：浒苔 特定生长率 营养生长 生殖生长 

分 类 号：Q142[生物学—生态学]