条石鲷胚胎及仔稚鱼的发育  

Study on the embryo & larva fish development of Oplegnathus fasciatus

作　　者：常抗美[1] 毛建平 吴剑锋[1] 张科杰[1] 

机构地区：[1]浙江海洋学院海洋科学与技术学院,浙江舟山316004 [2]嵊泗大海洋养殖有限公司,浙江舟山202451

出　　处：《上海水产大学学报》2005年第4期401-405,共5页Journal of Shanghai Fisheries University

基　　金：国家"十五"863项目(2003AA623020);浙江省重大科技攻关计划项目(2003C13023)

摘　　要：通过对条石鲷胚胎发育和仔鱼发育形态的观察,确定了条石鲷早期发育的进程.条石鲷的受精卵为圆球形、透明、浮性,卵径为0.90～0.95 mm, 油球1个,卵裂为盘状卵裂.在水温23～24℃,盐度26～28的条件下,受精后7 h 10 min,胚胎发育至原肠期;受精后12 h,眼囊形成;受精后20 h 30 min,心跳开始搏动;受精后26 h 30 min,仔鱼孵出.初孵仔鱼全长1.78～2.03 mm,至5日龄全长3.25～3.30 mm时,卵黄囊完全消失;至8～15日龄,全长3.50～4.97 mm时,鳔形成;至18～20日龄,全长7.10～7.31 mm时,尾鳍鳍条发育完整.The morphological features of embryonic and larval developmental in Oplegnathusfasciatus were described to determine the developmental process. The fertilized eggs with a lipid drop were oval pelagic and transparent. Egg cleavage acted as in discoidal segmentation. Under water temperature 23 - 24℃, salinity 26 - 28, the embryo developed to the stage of gastrula, eye sac, heart beat at 7 h 10 min, 12 h, 20 h 30 min after fertilization respectively. Through total 26 h 30 min embryo development, the larvae finally hatched with 1.78 - 2.03 mm whole length. The yolk sac of larvae would disappear after 5 days post hatching. To whole length 3.50 - 4.97 ram, air bladder of larvae formed about 8 - 15 days post hatching. Then the soft rays of caudal fin developed finally at 18 - 20 days post hatching with 7.10- 7.31 mm whole length.

关 键 词：条石鲷 亲鱼培育 育苗试验 胚胎发育 仔稚鱼发育 

分 类 号：S965.2[农业科学—水产养殖]