title: [Effects of large bio-manipulation fish pen on community structure of crustacean zooplankton in Meiliang Bay of Taihu Lake].
abstract: In 2005, a large bio-manipulation pen with the stock of silver carp and bighead carp was built to control the cyanobacterial bloom in Meiliang Bay of Taihu Lake. This paper investigated the seasonal variation of the community structure of crustacean zooplankton and the water quality within and outside the pen. There were no significant differences in the environmental parameters and phytoplankton biomass within and outside the pen. The species composition and seasonal dynamics of crustacean zooplankton within and outside the pen were similar, but the biomass of crustacean zooplankton was greatly suppressed by silver carp and bighead carp. The total crustacean zooplankton biomass and cladocerans biomass were significantly lower in the pen (P < 0.05). In general, silver carp and bighead carp exerted more pressure on cladoceran species than on copepod species. A distinct seasonal succession of crustacean zooplankton was observed in the Bay. Many crustacean species were only dominated in given seasons. Large-sized crustacean (mainly Daphnia sp. and Cyclops vicnus) dominated in winter and spring, while small-sized species (mainly Bosmina sp., Ceriodaphnia cornuta, and Limnoithona sinensis) dominated in summer and autumn. Canonical correspondence analysis showed that water transparency, temperature, and phytoplankton biomass were the most important factors affecting the seasonal succession of the crustacean.
authors.affiliation: Key Laboratory of Marine Bio-resource Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China. kzx@scsio.ac.cn
authors.forename: Zhi-Xin
authors.initials: ZX
authors.lastname: Ke
authors.forename: Ping
authors.initials: P
authors.lastname: Xie
authors.forename: Long-Gen
authors.initials: LG
authors.lastname: Guo
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
authors.forename: Qiong
authors.initials: Q
authors.lastname: Zhou
mesh_terms: D000818:Animals; D017756:Aquaculture; D002347:Carps / Q000254:growth & development* / Q000502:physiology; D002681:China; D003445:Crustacea / Q000254:growth & development; D000458:Cyanobacteria / Q000254:growth & development*; D017753:Ecosystem; D060106:Lakes; D010839:Phytoplankton / Q000254:growth & development; D011157:Population Dynamics; D014874:Water Pollutants, Chemical / Q000032:analysis*; D015048:Zooplankton / Q000254:growth & development*
chemical_list: D014874:Water Pollutants, Chemical