真鲷饵料生物褶皱臂尾轮虫和眼点拟微绿藻的大量培养  

MASS CULTURE OF Nannochloropsis oculata AND THE ROTIFER Branchionus plicatilis AS LIVING DIETS FOR RED SEA BREAM

作　　者：刘新富[1] 雷霁霖[1] 刘忠强[1] 柳学周[1] 

机构地区：[1]中国水产科学研究院黄海水产研究所,青岛266071

出　　处：《海洋科学》2000年第5期47-51,共5页Marine Sciences

基　　金：国家八五攻关课题资助项目!85-14 -02 -07号

摘　　要：于1992～1994年 ,在中国水科院黄海水产研究所小麦岛试验基地(青岛)进行的“中日合作真鲷增殖放流项目”执行期间 ,对真鲷饵料生物———眼点拟微绿藻 (Nannochloropsisoculata)和L型褶皱臂尾轮虫 (Branchionus plicatilis)进行了大量培养。眼点拟微绿藻的平均接种密度为1211.3×104个/ml,经5～6d的室内或室外露天培养即可达到平均为2341.0×104 个/ml的收获密度 ;采用眼点拟微绿藻和新鲜面包酵母作为混合饵料 ;褶皱臂尾轮虫 (L型 )培养3～4d即可由接种时平均密度148.0个/ml,增长至平均216.8个/ml的采收密度。眼点拟微绿藻和轮虫的日间增殖密度分别是12.8 %和26.6 %。每生产108个褶皱臂尾轮虫需要消耗0.73m3眼点拟微绿藻 (密度为2000×104/ml)和790.8g 鲜面包酵母。采用此法 ,作者连续3a成功地为每年百万尾以上真鲷苗种提供了足够的生物饵料。总结3a苗种培育和生物饵料培养之间的关系 ,作者认为 ,大规模稳定生产海水鱼类苗种时,育苗与饵料生物培养 (褶皱臂尾轮虫和眼点拟微绿藻 )水体的合理比例应为1∶1～1.5∶3。This paper reported the result of mass culture of Nannochloropsis oculata and the rotifer Branchionus plicatilis (L type) as living diets for red sea bream larva with batch culture method during 1992 to 1994 in Xiao Maidao Station of Yellow Sea Fishery Research Institute in Qingdao, P.R. China. The batch culture results of N. oculata and the rotifer as living diets for over one million red sea bream seedlings are reported: The mean inoculation density of N. oculata is 1.211×107 cells/ml and the mean harvesting density 2.341×107 cells/ml can be reached after an indoor or out door cultivation period of 5 to 6 days. An mean inoculum of 148.0 inds./ml rotifers yielded mean harvesting density of 216.8 inds./ml after 3 to 4 days cultivation with N. oculata and bread yeast as mixed diet. The mean daily reproduction rates of the N. oculata and the rotifers were 12.8% and 26.6% respectively. To produce 1.0×108 individuals of rotifers needs to consume 0.73 m3(2.0×107 cells/ml) of N. oculata and 790.8 g wet weight of bread yeast. Employing this culture method, we have successfully supplied enough N. oculata and rotifers for the reproduction of over one million red sea bream seedlinds in consecutively three years from 1992 to 1994. In order to synchronize the stable production of the living diets and the red sea bream seedlings, the rational rate of culture volumes of red sea bream seedlings, rotifers and the N. oculata is should be 1∶1.0 1.5∶3. S A NEW SPECIES OF MESODESMATIDAE FROM SOUTH CHINA SEA$$$$ XU Feng-shan, LI Xiao-hong (Institute of Oceanology, The Chinese Academy of Sciences, Qingdao, 266071) Abstract Recently, we found a new species belonging to Genus Mouterosatus, Family Mesodesmatidae, Bivalvia; it was collected from the South China Sea, on 14 December, 1959. The new species has a shell that is rather small, thin, fragile, compressed, equivalve and inequilateral; umbo low, situated at the posterior 2/5 of dorsal margin; without lunule and escutcheon; anterior margin round and poster

关 键 词：铒料生物 褶皱臂尾轮虫 眼点拟微绿球藻 真鲷 

分 类 号：S963.21[农业科学—水产养殖] S965.231[农业科学—水产科学]