摘要
文蛤的人工催产、浮游幼虫培育和稚贝水泥池培养试验结果表明：（1）用阴干与流水结合的方法刺激亲贝能获得理想俏产效果。（2）在水温28．0～29．1℃，比重1．0160—1．0187，pH值8．2－8．4条件下，用亚心形扁藻作文蛤D幼的开口饵料和壳顶幼虫饵料，生长快（日增长高达24．5μm）、成活率高（72．3％）、浮游期短（仅5－6天）。（3）文蛤眼点功出水泥池无砂底附苗试验获得成功，且单位面积附苗量高达433．3万颗／m2。（4）室内水泥池铺砂培养文蛤稚贝，前期生长快，但当壳长达300μm后，稚贝分泌一种粘液，生长和成活受到影响。建议定期翻池洗苗，当壳长达500μm后尽早将苗移至池塘内砂滩培养。
Artificial inducing parents to spawn for Asiatic hard clam (Meretrix meretrix Linnaeus) and rearing larvae and culturing spats in cement ponds have been tested.The results are as follows:I Inducing parents to spawn by drying and running water was very efficient for Asiatic hard clam.II Under water temperature 28 .0-29. 1℃, water density 1.0160-1. 0187 and pH 8.2-8.4, the growth was rapid (the maximum daily increasing being 24.5μm), the surviyal rate was high (the highest being 73.2%) and the larvae stage was short (only 5-6 days) while Plalymonar subcodiformis was fed as beginning food of Dveligers and food of umbo veligers of Meretrix meretrix Linnaeus.III Adherence to celnent bottom without sand has succeeded for eyepot veligers of Aleretrix meretrix Linnaeus, the adhesive rate being 4.33×106 pcs/m2.IV Growth was rapid in the first stage. When the spats attained a shell length of 300μm, they began to produce a kind of adhesive matter, thereafter the growth slowed and the survival rate was affected. It is suggested that spats be often washed and moved to culturc in outside ponds with sand as soon as the spats attain a shell length of 500μm.
出处
《海洋湖沼通报》
CSCD
北大核心
1998年第3期57-63,共7页
Transactions of Oceanology and Limnology
关键词
文蛤
工厂化
人工育苗
人工催产
幼虫培育
Asiatic hard clam (Meretrix meretrix Linnaeus), industrial seedlings rearing, artificial induced spawning, larvae rearing, seedling adhering
