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首页> 外文期刊>ICES Journal of Marine Science >The recovery of Atlantic halibut: a large, long-lived, and exploited marine predator
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The recovery of Atlantic halibut: a large, long-lived, and exploited marine predator

机译：大西洋大比目鱼的恢复：一个大型的，长期的，被剥削的海洋捕食者

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摘要

Atlantic halibut (Hippoglossus hippoglossus) have a long history of exploitation in the Northwest Atlantic and have gone through several periods of high biomass followed by a population crash. An assessment model using data collected on the Scotian Shelf and southern Grand Banks shows that the population peaked in 1984, then decreased sharply to a low in 1993. Several management measures were taken during the decline, including reductions in total allowable catch and a minimum size limit. Concurrently, removals by the otter trawl fishery were drastically reduced following the collapse of the cod (Gadus morhua) fishery. In 2003, recruitment increased and continued to be high for 6 years. Fishing mortality rates were moderate in the late 1990s and 2000s and the population increased. By 2009, the Atlantic halibut population was highly productive with both high biomass and high levels of recruitment. The coincidence in the timing of population recovery and management actions indicates that effective management contributed to the recovery of Atlantic halibut.
机译：大西洋大比目鱼（Hippoglossus hippoglossus）在西北大西洋具有悠久的开发历史，经历了数个生物量高的时期，随后种群崩溃。使用在斯科蒂人架子和南部大银行收集的数据进行的评估模型表明，人口在1984年达到顶峰，然后在1993年急剧下降至低水平。在下降期间采取了多种管理措施，包括减少总允许捕捞量和最小规模限制。同时，随着鳕鱼渔业的崩溃，水獭拖网渔业的捕捞量大大减少。 2003年，招聘人数有所增加，并且连续6年保持较高水平。在1990年代末和2000年代末，捕鱼死亡率适中，人口增加。到2009年，大西洋大比目鱼种群的生产力高，生物量高，招聘水平高。种群恢复和管理行动时间的巧合表明，有效的管理有助于大西洋大比目鱼的恢复。

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