MARINE EXPLOITATION OF ATLANTIC SALMON (SALMO-SALAR L) FROM THE RIVER BUSH, NORTHERN-IRELAND
MARINE EXPLOITATION OF ATLANTIC SALMON (SALMO-SALAR L) FROM THE RIVER BUSH, NORTHERN-IRELAND
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DOI：
10.1016/0165-7836(94)90020-5
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发表时间：
1994-02-01
影响因子：
2.4
通讯作者：
KENNEDY, GJA
中科院分区：
文献类型：
--
作者：
CROZIER, WW;KENNEDY, GJA
对1984-1991年期间公海和家庭水产渔业中布什河大西洋鲑鱼的海洋开发进行了定量分析，其依据是128 150条微标金枪鱼放流和7003条成鱼回收。公海渔业的开采率较低，爱尔兰沿海(即家庭水域)渔业的开采率较高，62.2%至89.0%的返流野生网格栅是在后者捕捞的。退养两条海冬鱼的水体开采率较低，为36.5-60.0%。对野生鱼和孵化场养殖鱼类的开发利用的比较评估表明，养殖群体的开发率普遍较高，其中与鱼龄有关的差异更大。25.0%~36.2%的野生网纹石斑鱼和0.26%~0.53%的2Sw鱼在开发前回到家乡水域。这代表了不列颠群岛微型野生三文鱼回到家水中存活的第一次估计。
A quantitative analysis of marine exploitation of River Bush Atlantic salmon in high seas and homewater fisheries during the period 1984-1991 has been carried out, based on 128 150 microtagged smolt releases and 7003 adult recaptures. Exploitation rates were low in high seas fisheries and high in Irish coastal (i.e. homewater) fisheries, between 62.2 and 89.0% of returning wild grilse being taken in the latter. Homewater exploitation rates on returning two sea-winter (2SW) fish were lower at 36.5-60.0%. Comparative assessments of exploitation of wild and hatchery-reared fish demonstrated generally higher exploitation rates on reared groups, within which there were further differences related to smolt age. Between 25.0 and 36.2% of wild grilse and 0.26-0.53% of 2SW fish returned to homewaters prior to exploitation. These represent the first estimates of survival to homewater return of microtagged wild salmon in the British Isles.