Community structure of zooplankton in an industrial ecoaquaculture system in a blunt-snout bream Megalobrama amblycephala culture pond
MENG Shun-long1，2， LI Dan-dan1， QIU Li-ping1， HU Geng-dong1， FAN Li-min1，SONG Chao1， WU Wei1，2， ZHENG Yao1， CHEN Jia-zhang1，2， XU Pao1，2
1.Scientific Observing and Experimental Station of Fishery Resources and Environment in the Lower Reaches of the Changjiang River，Ministry of Agriculture； Key Open Laboratory of Ecological Environment and Resources of Inland Fisheries， Chinese Academy of Fishery Sciences； Freshwater Fisheries Research Center， Chinese Academy of Fishery Sciences， Wuxi 214081， China； 2.Wuxi Fishery College， Nanjing Agricultural University， Wuxi 214081，China
Abstract: The zooplankton community structure was studied in the 6 test partitions in a pond industrial eco-aquaculture system in a blunt-snout bream Megalobrama amblycephala culture pond at stocking density of 300 ind./m2(high)and 200 ind./m2(low)by Shannon-Wiener diversity index and Pielou uniformity index in order to evaluate change pattern of zooplankton community structure in pond industrial eco-aquaculture system and to explain the ecological mechanism.The results showed that 25 species of zooplankton and 1 class of nauplius were found in the 6 test partitions， including 14 species of rotifer，predominated in species， accounting for 56%of total zooplankton species； 8 species of cladoceran， taken second place in species， accounting for 32%； and 3 species of copepod，accounting for 12%.The spatial distribution sequence of zooplankton species number， biodiversity indexes，and uniformity indexes was expressed as inlet area，purification area，recirculation area，back area＞ low stocking density area＞high stocking density area＞outlet area， and the order of biomasses of rotifer， cladoceran and copepod was described as inlet area， purification area， recirculation area， back area ＞outlet area ＞ low stocking density area＞high stocking density area.There was higher proportion of cladoceran and copepod in aquaculture area than that in other areas， while the proportion of rotifer was lower in aquaculture area than that in other areas， which was involved in zooplankton consumption by the fish，the consumption of larger zooplankton such as cladoceran and copepod being energetically feasible compared to small zooplankton including rotifer，resulting in miniaturization of zooplankton in aquaculture area.It was concluded that the water quality was in middle pollution level in outlet area，in light pollution level in aquaculture areas， and in clean level in other 4 areas based on biodiversity， indicating that the water quality were in good state except outlet area，and the pond industrial eco-aquaculture system functioned well.
张金勇, 高养春, Amir Shah Ruddin Md Sah, Aileen TAN Shau-Hwai, Norlaila Binti Mohd Zanuri, 李宏俊. 基于高通量测序和形态学鉴定的马来西亚马塘红树林区浮游动物多样性分析[J]. 大连海洋大学学报, 2021, 36(6): 910-919.
2018, Vol. 33 
