Lessons learned from Japanese marine finfish stock enhancement programmes
Lessons learned from Japanese marine finfish stock enhancement programmes
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DOI：
10.1016/j.fishres.2006.03.019
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发表时间：
2006-08-01
影响因子：
2.4
通讯作者：
Kishino, Hirohisa
中科院分区：
文献类型：
--
作者：
Kitada, Shuichi;Kishino, Hirohisa
我们在日本考察了海洋鱼类资源增加对沿海鱼类的效果。为了做到这一点，我们使用了四个案例研究，以确定是否在没有取代野生鱼类的情况下，孵化场释放的鱼增加了野生鱼类的总产量。从放流鱼和野生鱼的渔获量来看，孵化养殖鱼对罗非鱼总产量的贡献率为36.4+/-17.8%，对比目鱼的贡献率为22.6±11.3%。约50%的总渔获量变化是由孵化场养殖的鱼的捕获来解释的，红鱼和比目鱼的解释分别为29%-38%。然而，增加产量的空间受到运载能力的限制，特别是在释放地点。在一个案例中，有人建议用孵化场饲养的幼鱼取代野生鱼。对宏观捕捞历史的比较分析表明，孵化养殖场养殖的鱼类对罗非鱼和比目鱼的平均贡献率分别为9.5%和11.7%，全球野生种群动态似乎与种群增加活动无关。我们的结果表明，需要对股票增持计划采取谨慎的做法。我们还讨论了海洋种群增加的生物潜力、局限性和未来前景。(C)2006爱思唯尔B.V.保留所有权利。
We examined the efficacy of marine stock enhancement for coastal finfish in Japan. To do this, we used four case studies of the red sea bream Pagrus major and the Japanese flounder Paralichthys olivaceus to establish whether hatchery releases augmented total production without replacement of wild fish. The catches by age of released and wild fish showed that hatchery-reared fish contributed 36.4 +/- 17.8% to total production of red sea bream and 22.6 +/- 11.3% to flounder, respectively. About 50% of the variation in total catches was explained by capture of hatchery-reared fish for red sea bream, and 29-38% for flounder. However, the scope for increased production was limited by carrying capacity, particularly at release sites. Replacement of wild fish by hatchery-reared juveniles was suggested in one case. The comparative analysis of macro-scale catch history revealed that the average contribution of hatchery-reared fish was 9.5% for red sea bream and 11.7% for flounder, and the global dynamics of wild populations does not appear to be linked to stock enhancement activities. Our results suggest the need for a cautious approach to stock enhancement programmes. We also address the biological potential, the limitations, and the future prospects of marine stock enhancement. (c) 2006 Elsevier B.V. All rights reserved.