EVALUATION OF MICROCYSTIS AS FOOD FOR ZOOPLANKTON IN A EUTROPHIC LAKE
EVALUATION OF MICROCYSTIS AS FOOD FOR ZOOPLANKTON IN A EUTROPHIC LAKE
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DOI：
10.1007/bf00005559
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发表时间：
1987-01-30
期刊：
影响因子：
2.6
通讯作者：
YASUNO, M
中科院分区：
文献类型：
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作者：
HANAZATO, T;YASUNO, M
在霞浦湖进行了4个实验，以评估微囊藻作为浮游动物的食物，并获得了以下结果。(1)用实验室培养的微囊藻饲养微型裸腹藻，其生长量很小，不能繁殖。当小球藻与微囊藻混合作为食物时，动物没有良好的生长和繁殖。(2)当微囊藻单独或与小球藻混合投喂时，微型裸腹蚤对微囊藻的同化作用远低于小球藻。(3)从日本霞浦湖采集的微囊藻不能被微型裸腹蚤利用，即使将菌落破碎成可食用的大小。不过，当它被分解时，它变成了可利用的食物。(4)在微囊藻大量繁殖的霞浦湖未过滤水体中，未发现微囊藻种群增长的抑制剂。分解的微囊藻似乎是利用浮游动物作为一个重要的食物来源在霞浦湖。
Four experiments were conducted to evaluate Microcystis as food for zooplankton in Lake Kasumigaura, and the following results were obtained. (1) Moina micrura (Cladocera) showed little growth and no reproduction when the animal was reared with Microcystis cultured in the laboratory. The animal did not grow nor reproduce well when Chlorella was mixed with Microcystis as food. (2) Moina micrura assimilated Microcystis much less than Chlorella when the animal fed on single species of Microcystis or a mixture with Chlorella. (3) Microcystis collected from Lake Kasumigaura [Japan] could not be utilized by Moina micrura even though the colonies were broken up into edible sizes. However, the alga turned into utilizable food when it was decomposed. (4) No inhibitors of Moina micrura population growth could be found in the non-filtered water of Lake Kasumigaura where Microcystis was blooming heavily. Decomposed Microcystis seemed to be utilized by zooplankton as an important food source in Lake Kasumigaura.