泥蚶幼虫滤水率和摄食率的研究  

STUDY ON THE FILTRATION AND INGESTION RATE OF BLOODY CLAM LARVAE TEGILLARCA GRANOSA

作　　者：方建光[1] nsqd.sd.cn 孙慧玲[1] 匡世焕[1] 梁兴明[1] 牛锡端[1] 刘志鸿[1] 李锋[1] 

机构地区：[1]中国水产科学研究院黄海水产研究所

出　　处：《海洋与湖沼》1999年第2期167-171,共5页Oceanologia Et Limnologia Sinica

基　　金：国家攀登计划B资助!PD B-6-3-2

摘　　要：于1996年8月在胶南市棋子湾海珍品育苗场采集已孵化5天、壳长达到154μm的泥蚶面盘幼虫，利用CoulterCounter颗粒计数器测量泥蛐幼虫培育水体中饵料颗粒物质浓度的变化，对泥蚶幼虫的滤水率、摄食率进行了测定，并得出泥蚶幼虫滤水率、摄食率与生殖发育之间的关系。结果表明，泥蚶幼虫的壳长与其滤水率和摄食率均呈正相关，即幼虫壳长越长，其滤水率和摄食率越高。在相同环境条件下，幼虫的培育密度与其滤水率呈负相关。泥蚶幼虫的摄食率在投喂饵料后2h左右达到最大值，然后逐渐下降。In order to idenotify the optimal feeding ration and to reveal the relationship between the size and ingestion rate, the filimtion rate of veliger and metamorphic spat Tegillarca granosa was measured at the Mariculture Ecological Laboratory (MEL), Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qngdao, China, from August 16 to 30, 1996. The 5-day old veligers with a shell length of 145μm were collected from the hatehery located in Qizi Bay, Jiaonan County, 100km to the south of Qingdao, reared in the laboratory in three aquariums with densities of 3,7,9 ind/ml, respectively, and kept in the laboratory in filtered seawater at 26 28℃, with a salinity of 28. Isochrysis galbana is the only food for the larvae and spat during the experiment period. Fitration rate was estimated by measuring the reduction of particles in the aquarium with 10L volume of filtered seawater using the formula FR , where t is the time in min; C0 and Ct are the prticle concentration at time 0 and time t, respectively, and V is the volume of aquarium (μl). The ingeshon rate was calculated using the formula: FD = Ct x FK where Ct is the particle concenthehon at the sapling time and FR is the filtration rate of larvae (μl/min). The filtration rates of lareae were measured with the densities of 3,7 and 9 larvae/ml, respectively. During the period of experiment the larvae were fed with Isochrysis galbana in the concentration of 15 000cell / ml, added twice a day, the first added at 9: 00 am, immediately before sampling and the second added at 6:00 pm after finishing the sampling of the day. In order to supply enough oxygen and keep the lareas well distributed in the water, but not to shr the faces of larvae or sedimenop material in the bottom of aqtaltnn, very faint aeration was supplied during thes experiment. The concentration of particles were measured with an electric particle counter (Coulter Counter, Model A, with a 100μm tube orifice diameter).The results show that firshy, the filtration at of larvae incre

关 键 词：泥蚶幼虫 滤水率 摄食率 幼虫密度 

分 类 号：S968.324[农业科学—水产养殖] Q959.215.2[农业科学—水产科学]