Effects of stocking density and alga species on larval growth,survival and metamorphosis in bamboo clam Solen grandis
YAN Xi-wu,ZHAO Sheng-xu,ZHANG Peng,YANG Feng,CAO Chen,ZHANG Guo-fan
1.School of Life Science and Technology,Dalian Ocean University,Dalian 116023,China;2.Pulandian Fisheries Technique Extension Station,Dalian 116222,China;3.Yingkou Institute of Fisheries,Yingkou 115000,China;4.Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China
Abstract: The impact of stocking density and alga species on larval growth,survival and metamorphosis in bamboo clam Solen grandis was investigated at water temperature of 22.0-24.8 ℃,a salinity of 31-33,and pH 8.10-8.50.The larval growth rate and survival were found to decrease with increase in stocking density（5,10,20,40,and 80 ind./mL）,no postlarvae being observed at 40 ind./mL and 80 ind./mL.The metamorphic rate was reduced with stocking density rising（5,10,and 20 ind./mL）,with longer developmental period.The better larval growth,survival,metamorphosis and shorter development period were observed in the bamboo clam fed only Chlorella saccharophila（Q）,Pyramimonas sp.（T）,Nitzschia closterium（X）,Isochrysis zhanjianggenesis（J）,or yeast（H） in the early rearing period.In the later rearing period,however,the clam fed the mixture of J,T,and X had better larval growth,survival,metamorphosis and shorter development period.The higher bamboo clam juvenile yield was found when the juveniles were fed the mixture of the algae at stocking density of 10 ind./mL in a hatchery.
闫喜武, 赵生旭, 张澎, 杨凤, 曹琛, 张国范. 培育密度及饵料种类对大竹蛏幼虫生长、存活及变态的影响[J]. 大连海洋大学学报, 2010, 25(5): 386-390.
YAN Xi-wu, ZHAO Sheng-xu, ZHANG Peng, YANG Feng, CAO Chen, ZHANG Guo-fan. Effects of stocking density and alga species on larval growth,survival and metamorphosis in bamboo clam Solen grandis. Journal of Dalian Ocean University, 2010, 25(5): 386-390.
2010, Vol. 25 
