光亮裸甲藻的生长特征研究

Studies on the Growth Characters of a Marine Dinoflagellate,Gymnodinium splendens Lebour

在实验室条件下获得光亮裸甲藻的最大生长率Ｋ＿（ｍａｘ）为１．８４（第２天），指数生长时期的Ｋ值为０．９（第６天），第９天后，当细胞密度达３．６×１０￣３ｃｅｌｌｓ／ｍｌ时，Ｋ趋近于０。在Ｆ～Ｆ４培养液中，这种甲藻的细胞密度和生长率差别不大，Ｆ／８～Ｆ／６４培养液中的藻细胞密度和生长率在第４或第５天后明显下降，这显然与培养液中的营养盐馈乏有关。

The growth rate of Gymnodinium splendens was examined using a mono-clonal culture isolated from Savannah estuarine,georgia in March,1991.The maximumgrowth rate(K_(max))under the controlled conditions(20 C,illumination of 4 000～4500 luxand L:D/12:12)was 1.84 divisions/day in the second day and then the K values decreasedwith the increasing of the algae derfsities. During the log phase of growth in this cultures theK_(average) was 0.9,which indicated the high potential reproduction rate of the species.