水生生物学报2018，Vol.42Issue(2)：400-405,6.DOI:10.7541/2018.051
高密度鳙池塘分区养殖浮游动物群落结构及水环境特征
ZOOPLANKTON COMMUNITY COMPOSITION AND ENVIRONMENTAL CHARACTERISTIC IN BLOCK PARTITION POND WITH HIGH DENSITY OF BIGHEAD CARP(ARISTICHTHYS NOBILIS)
摘要
Abstract
The study investigated the zooplankton community composition and environmental factors in polyculture pond with high density of bighead carp(Aristichthys nobilis),yellow catfish(Pelteobagrus fulvidraco)and silver carp (Hypophthalmichthys molitrix.)The ponds were treated with 1/4 block(group A),1/2 block(group B)and no block (group C) meshes to investigate whether the blocking regulate the survival pressure of zooplankton population. The re-sults showed that TSS decreased significantly (P<0.05) in groups A and B, while nutrients as TN and TP significantly increased (P<0.05) in these two groups. The species of protozoa and rotifers in all groups were relatively high, account-ing for 30.4%-36.6% and 51.6%-57.0%, respectively, while species of cladocera and copepods were relatively lower. There was no significant difference in species composition of each group, and species diversity (H') in groups A and B were significantly higher at two sampling times (July 9thand July 23rd) than that in group C. In addition, the domi-nant populations in all groups were protozoa and rotifers, but rotifers tended to decrease in later time point. Moreover, the dominant species Moina macrocopa disappeared in group C overtime,while it still presented in group A and B. There were no significant difference in the biomass of rotifers and protozoa in each group during the experiment, while the total biomass of cladocera and copepods was significantly higher in group B than those in groups A and C, indicat-ing that blocking culture could reduce the survival pressure of large zooplankton population and slow down the decline of biomass. These results would provide a positive guide in maintaining ecological balance and increase nature food of bighead carp in the high diversity culture pond.关键词
浮游动物/鳙/拦网分区池塘/生物量Key words
Zooplankton/Aristichthys nobilis/Blocking partition pond/Biomass分类
生物科学引用本文复制引用
李学梅,朱永久,龚进玲,王旭歌,杨德国..高密度鳙池塘分区养殖浮游动物群落结构及水环境特征[J].水生生物学报,2018,42(2):400-405,6.基金项目
国家自然科学基金(31502142) （31502142）
现代农业产业技术体系专项资金(CARS-46)资助[Supported by the National Natural Science Foundation of China(31502142)and China Agriculture Research System(CARS-46)] （CARS-46）
