东山湾翡翠贻贝海区半人工采苗技术研究

本文研究了东山湾翡翠贻贝的繁殖期，附苗期及海区半人工采苗技术。结果表明：东山湾翡翠贻贝的繁殖期在５－１０月，其５－６月为繁殖盛期。贻贝附苗季节在６－１１月，主要附苗季节在６月上中旬至７月初。通过对东山湾７片采苗区海水理化因子的测定和采苗效果的比较试验，确定了东山湾合适的采苗区为２＾＃－６＾＃区，其中３＾＃，４＾３，５＾＃区采苗效果最好，同时筛选出了木麻黄，胶皮合股绳和泡沫编织袋等３种附苗效果较好的

Study of semi-artificial spat-collection technique of green mussel, Perna viridis in Dongshan Bay

This paper reports the spawning period the settling period and the semi-artificial spatcollection technlque of green nlussel, Perna viridis. (L. ) The results show the spawningstarts from May to July. The settling period of P. vlridls is from June to November, the peak perlod of settlement starts from early and middle June to early July. We recommend that the suitable spat-collection area is 2# to 6# areas in the Dongshan Bay by the investiga-tion and determination of sea areas enviromental factors and the comparative experiments of spat-collection in seven parts of spat-collect1on areas established. The best effect of settlement is 3# to 5# areas. We recommend three kinds of settling apparatus: Australian pine trunk, rubber rope and weaved plastlc bag filled with foamed plastics, as they show better results. In addition, the time to lower the settling apparatus, suitable water layer of settlement and substrata required for the settling of spat are discussed.