【摘要】 使用体外挂标志牌和体内注射着色液(入墨法)方法对赤点石斑鱼Epinephelusakaara和青石斑鱼Epinephelusawoara幼鱼(人工培育幼鱼和野生幼鱼)和野生成鱼进行标志放流试验。结果表明:石斑鱼幼鱼和成鱼移动范围不大,幼鱼最长经651d、成鱼最长经48d的移动均在2nmile以内,其栖息习性均具有明显的地域性。挂牌标志法只获得放流当年重捕记录,入墨法获得当年、第二年和第三年的重捕记录,室内水泥池暂养标志鱼有1/3标志牌脱落,说明体外挂牌标志对石斑鱼不太适合。放流入墨法标志幼鱼各水域重捕率第一年1.4%～4.5%、第二年3.1%～13.4%、第三年0.7%。此标志法对研究群体生长较理想。更多还原

【Abstract】 Two methods,tagging and ink injection,were used in grouper marking.The studied fishes were juvenile of Epinephelus akaara and Epinephelus awoara both artificially produced and caught from natural waters and their wild adults.Results showed that the fishes inhabited where released;both juvenile and adult ones moved in an area of 2n mile diameter after651days and48days of releasing,respectively.As far as the tagging method is concerned,we found that the tagged fishes could only be recaptured in the year when released;but with injection method,it was reported that the fishes could be caught in the1st,2nd and3rd years.It was confirmed in the cement tank where tagged fishes lost1/3tags.That means tagging method shall not adapt to the release research,while the injection method is good for it.Generally,the recaptured rates of injected fishes were1.4%～4.5%,3.1%～13.4%,0.7%in the1st.2nd,3rd years,respectively.更多还原