Comparison of species composition of phytoplankton and heterotrophic bacteria number between normal shrimp culturing ponds and disease-occurred ponds
GUO Zhi-xun1, ZHANG Han-hua1, FENG Juan1, WANG Rui-xuan1, LIU Dong-hui2, LI Zhuo-jia1
1. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; 2. Guangdong Haida Group Co.Ltd, Guangzhou 511400, China
The species composition of phytoplankton and heterotrophic bacteria number in the normal shrimp culturing ponds were compared to those in the disease-occurred ponds by trawling method and spread plate method.The results showed that 40 species of phytoplankton in 31 genera were observed,which belonged to Bacillariophyta,Chlorophyta,Cyanophyta,Pyrrophyta,Euglenophyta, Cryptophyta and Xanthophyta;however,only Scenedesmus dimorphus(Turp.) Kutz.and Oscillatoria sp.were observed in the four studied ponds.There were more phytoplankton classes and species in the normal shrimp culturing ponds than the diseased-occurred ponds.The abundances of Cyanophyta species were 6.16% and 9.77% respectively in the two normal shrimp culturing ponds and lower than those in the two disease-occurred ponds(18.85% and 43.38%),while the diversity and evenness indexes of phytoplankton in the two normal shrimp culturing ponds were higher.The similarities of phytoplankton community between different ponds were not related to the occurrence of diseases.The total number of heterotrophic bacteria in the disease-occurred ponds was higher than that in the normal shrimp culturing ponds.
郭志勋1*, 张汉华1, 冯娟1, 王瑞旋1, 刘栋辉2, 李卓佳1. 正常与发病对虾养殖池塘浮游藻种类组成和异养细菌数量比较[J]. , 2011, 30(4): 369-374.
GUO Zhi-xun1, ZHANG Han-hua1, FENG Juan1, WANG Rui-xuan1, LIU Dong-hui2, LI Zhuo-jia1. Comparison of species composition of phytoplankton and heterotrophic bacteria number between normal shrimp culturing ponds and disease-occurred ponds. , 2011, 30(4): 369-374.
