红树林海区鱼类资源增殖放流效果调查

journal6 ›› 2010, Vol. 31 ›› Issue (1): 104-109.

红树林海区鱼类资源增殖放流效果调查

（1.广东海洋大学水产学院，广东湛江524025；2.广东省湛江市海洋与渔业局，广东湛江524000；3.广东湛江红树林国家级自然保护区管理局，广东湛江524088）

出版日期:2010-01-25 发布日期:2012-04-19
作者简介:叶宁（1972-），男，浙江宁波人，广东海洋大学水产学院实验师，主要从事鱼类学、鱼类增养殖学教学与科研工作.
基金资助:
中荷合作项目雷州半岛红树林综合管理和沿海保护项目（IMMCP项目，中国2000.10赠款协议）

Investigation of Enhancement and Releasement Effect ofFishery Stock in Gaoqiao Mangrove

（1.Fisheries College of Guangdong Ocean University,Zhanjiang 524025,Guangdong China；2.Zhanjiang Ocean and Fishery Administration,Zhanjing 524088,Guangdong China；3.Head Office of Zhanjiang Mangrove National Nature Reserve,Zhanjiang 524088,Guangdong China）

Online:2010-01-25 Published:2012-04-19

摘要/Abstract

摘要：为探讨渔业资源增殖放流的可行性和效果,5万尾单（雄）性尼罗罗非鱼放流后经海上定点采样调查，发现：放流区域的当年渔获量和多样度指标都有所增加，而没有放流的区域和年份却继续递减；放流后经济鱼类数量有所增加；放流的单雄性尼罗罗非鱼不繁殖后代，只在一定的区域内活动.放流调查取样结果表明渔获物中尼罗罗非鱼占总数的32％和总重量的36.2％，放流存活率达72%，累积生长率为23.25 g/月，运用回归方程计算出放流尼罗罗非鱼的K＝0.242 6，L∞＝21.565 13 cm，W∞=155.84 g，t=9.24月，放流取得了初步效果.

关键词： 单（雄）性尼罗罗非鱼, 增殖放流, 渔业资源, 效果

Abstract: 50 000 mono-sex individuals of Nile tilapias were released in the mangrove area of Hongkan and Bohe to evaluate the releasing effects on the fishery resources.By fixed point sampling survey,both the current year catch and diversity increased after releasement but both declined in the regions without releasement;the number of commercial fishes increased after releasement;the released mono-sex(male) Nile tilapias didn’t propogate,and they just swimmed about in certain regions.After released,Nile tilapias accounted for 32% of the total number and 36.2% of gross weight in fish harvest.The survival rate of released Niles tilapia was 72%.The saccumulated growth rate of Niles tilapias was 23.25 g/month.A regression combined analysis of the two results above,some parameters were calculated:K=0.242 6,L∞＝21.565 13 cm,t＝9.24 months,W∞＝155.84 g.Preliminary effect of releasement is achieved.

Key words: monosex tilapia；enhancement and releasement, resources of fishery, catch of fishing, effect

叶宁, 杨峰, 叶健欣, 林广旋. 红树林海区鱼类资源增殖放流效果调查[J]. journal6, 2010, 31(1): 104-109.

YE Ning, YANG Feng, YE Jian-Xin, LIN Guang-Xuan. Investigation of Enhancement and Releasement Effect ofFishery Stock in Gaoqiao Mangrove[J]. journal6, 2010, 31(1): 104-109.

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