摘要
渔排立体挂养贝类可以充分利用海域的养殖空间,摄食天然饵料减少养殖成本。为探究西施舌(Coelomactraantiquata)挂养实验海区的生物环境,于2011年7～10月对实验区不同水层(1m、2m和3m)进行浮游生物调查研究,同时测定各水层温度、盐度等数据。实验结果表明:实验海区8月份温度最高,为29.40±0.54℃,同时浮游植物生物量最大,丰度达162.2×104cell/m3,多样性指数达到3.45,均匀度为0.79,共鉴定浮游植物23种,其中硅藻门18种,甲藻门5种,中肋骨条藻(Skeletonema costatum)为优势种。浮游动物13种,其中原生动物4种,桡足类12种,枝角类1种,微刺哲水蚤(Canthocalanus pauper)为优势种。不同水深浮游生物丰度的关系是1m>2m>3m。4个月的盐度变化不大。海区生态环境较适合西施舌幼贝生长。
Shellfish are farmed in the fish raft, it can take full advantage of the aquatorium space. Ingesting natural bait re- duces the cost of aquaculture. To explore the biotic environment of experimental area, this paper reported plankton investiga- tion in the sea area of different depths （ 1 m,2m and 3m）. Meanwhile measured and calculated the temperature, salinity and pH in 2011,7 - 10 months. The results manifest that the highest average temperature was 29.40 ±0.54℃ in August, and the biomass of phytoplankton was the most abundant, the abundance was 162.2 × 104cell/m3. Diversity index was 3.45. Evenness was 0.79. Total 23 phytoplankton and 13 zooplankton species were identified during the investigation, including Bacillariophyta of 18 species, Pyrroptata of 5 species, Protozoon of 4 species, Copepoda of 12 species, Cladocerans of 1 spe- cies. The dominant species was Skeletonema costatam and Canthocalanus pauper. The relevance of plankton biomass was that lm〉 2m 〉 3m. Four months of salinity change was not obvious. The entironment was propitious to the growth of Coelomactra antiquata spat.
出处
《安徽农学通报》
2012年第23期47-50,共4页
Anhui Agricultural Science Bulletin
基金
福建省科技厅科技重大项目(2010N5007)
国家海洋局海洋公益行业科研专项资助(201205021)
关键词
西施舌
浮游生物
挂养
丰度
优势种
Coelomactra antiquata
Plankton
Cultivation
Abundance
Dominant species
