Temporal variation in biodeposit organic content and sinking velocity in long-line shellfish culture  

作　　者：任黎华 张继红 

机构地区：[1]Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences [2]East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences [3]Institute of Oceanology,Chinese Academy of Sciences [4]Function Laboratory for Marine Fisheries Science and Food Production Processes,Qingdao National Laboratory for Marine Science and Technology

出　　处：《Chinese Journal of Oceanology and Limnology》2016年第5期985-991,共7页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Key Technology Research and Development Program of China(No.2011BAD13B06);the National Natural Science Foundation of China(No.41276172);the Special Scientific Research Funds For Central Non-Profit Institute,CAFS(No.2014A01YY01)

摘　　要：We measured the organic content and sinking velocities of biodeposits from two scallop species(Chlamys farreri,Patinopecten yessoensis) and abalone(Haliotis discus hannai) that were cultured on suspended long-lines.Measurements were conducted every two months from April 2010 to February 2011.The shellfish were divided into three size groups(small,middle,and big sizes).At each sample point,we assessedbiodeposit organic content,average sinking velocity,the frequency distribution of sinkingvelocities,and the correlation between organic content and sinking velocity.The organic content of biodeposits varied significantly among months(P<0.05) and the pattern of change varied among species.Sinking velocities varied significantly,ranging from <0.5 cm/s to >1.9 cm/s.The sinking velocities of biodeposits from C.farreri and P.yessoensis were 0.5-1.5 cm/s and from H.discus hannai were <0.7 cm/s.The organic content was significantly negatively correlated to the sinking velocity of biodeposits in C.farreri(P<0.001) and P.yessoensis(P<0.05).We measured the organic content and sinking velocities ofbiodeposits from two scallop species （Chlamys farreri, Patinopecten yessoensis） and abalone （Haliotis discus hannai） that were cultured on suspended long-lines. Measurements were conducted every two months from April 2010 to February 2011. The shellfish were divided into three size groups （small, middle, and big sizes）. At each sample point, we assessed biodeposit organic content, average sinking velocity, the frequency distribution of sinking velocities, and the correlation between organic content and sinking velocity. The organic content of biodeposits varied significantly among months （P〈0.05） and the pattern of change varied among species. Sinking velocities varied significantly, ranging from 〈0.5 cm/s to 〉1.9 cm/s. The sinking velocities of biodeposits from C. farreri and P. yessoensis were 0.5-1.5 cm/s and from H. discus hannai were 〈0.7 cm/s. The organic content was significantly negatively correlated to the sinking velocity ofbiodeposits in C.farreri （P〈0.001） and P. yessoensis （P〈0.05）.

关 键 词：biodeposit organic content SHELLFISH sinking velocity 

分 类 号：S917.4[农业科学—水产科学]