水产学报2024，Vol.48Issue(9)：136-148,13.DOI:10.11964/jfc.20220313405
凡纳滨对虾养殖池塘及外河道的浮游植物群落结构变化
Changes of phytoplankton community structure in Litopenaeus vannamei culture ponds and outer river
摘要
Abstract
This study aimed to elucidate the dynamics of phytoplankton community structure in Litopenaeus van-namei culture ponds,compare them with those in surrounding waters,and explore the correlation between phyto-plankton and environmental factors.Samples were collected from the aquaculture ponds and the adjacent river of a L.vannamei farm in Fengxian District,Shanghai.Multivariate analysis was employed to examine the relationships between phytoplankton and environmental parameters.The study identified 67 genera across 7 phyla in the ponds,with Chlorophyta predominating at 51％.The dominant genera included 28 genera from 5 phyla,with Chlorella being the most prevalent in Bacillariophyta(F=1.0).The overall average phytoplankton density was 1.09×107 ind/L,with Chlorophyta,Cyanophyta and Bacillariophyta contributing 47％,30％and 11％,respect-ively.Positive correlation were observed between the phytoplankton community structure and levels of total nitro-gen(TN),total phosphorus(TP)and chemical oxygen demand(COD).In the adjacent river,7 phyla and 56 gen-era were detected with Chlorophyta account for 46％,among which 6 phyla and 26 genera were dominant with Cryptococcus and Cryptomonas being the dominant genera.The average phytoplankton density was 1.18×105 ind/L,with Cryptophyta,Bacillariophyta and Chlorophyta comprising 46％,27％and 13％,respectively.The river's phytoplankton structure was primarily influenced by the abundance of colonies and rotifers.The pond's phytoplankton density was significantly higher and more complex than that of the river,with Microcystis blooms posing a risk to the healthy of L.vannamei during September and October.This necessitates close monitoring of TN,TP,and organic matter levels.The study thus highlights the differences in phytoplankton community struc-ture between shrimp culture system under artificial intervention and natural ecosystem.关键词
凡纳滨对虾/养殖池塘/环境因子/浮游植物/多元分析方法Key words
Litopenaeus vannamei/culture pond/environmental factors/phytoplankton/multidistance analysis method分类
农业科技引用本文复制引用
潘璠,江敏,吴昊,唐燕,习文双,叶军强,于忠利..凡纳滨对虾养殖池塘及外河道的浮游植物群落结构变化[J].水产学报,2024,48(9):136-148,13.基金项目
上海市产业技术体系建设项目[沪农科产字(2022)第5号] （2022）
上海市科技兴农项目[沪农科创字(2019)第3-5号] （2019）
广东省重点领域研发计划项目(2020B0202010009) Shanghai Industrial Technology System Construction Project[Agricultural Reserch System of Shanghai,China(2022)No.5] （2020B0202010009）
Shanghai Agriculture Applied Technology Development Program[Agricultural Reserch System of Shanghai,China(2019)No.3-5] （2019）
Guangdong Province key Areas of Research and Develop-ment Program(2020B0202010009) （2020B0202010009）
