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首页> 外文期刊>ICES Journal of Marine Science >Density-dependent distribution of Atlantic cod (Gadus morhua) into deep waters on the Faroe Plateau
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Density-dependent distribution of Atlantic cod (Gadus morhua) into deep waters on the Faroe Plateau

机译：法罗高原深水域大西洋鳕鱼的密度依赖性分布

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The natural production of cod on the Faroe Plateau depends on the spatial overlap between cod and their prey. However, cod tend to be distributed shallower than the bulk of their prey fish, such as Norway pout and blue whiting. We used commercial and survey catch per unit effort (cpue) data to investigate the distribution of cod in the deep water (150-400 m) on the Faroe Plateau. Cod often move to deep water when they are 4 or 5 years old. The extent of this habitat shift was positively correlated with the total biomass of 3- or 4-year-old cod on the Faroe Plateau, whereas prey densities in the shallow and deep areas, respectively, seemed to have much less influence. Hence, year classes that were a year older than strong year classes were distributed deeper than normal, and vice versa. The cpue in deep water for all ages pooled was strongly correlated with the age 3-6 biomass of cod on the entire Faroe Plateau. These findings are discussed in relation to food utilization and management.
机译：法罗高原鳕鱼的自然生产取决于鳕鱼与其猎物之间的空间重叠。但是，鳕鱼的分布往往比它们的大部分猎食鱼浅，例如挪威blue鱼和蓝鳕。我们使用商业和单位产量捕捞量（cpue）数据调查了法罗高原深水（150-400 m）中的鳕鱼分布。鳕鱼在4或5岁时经常移入深水中。这种栖息地转移的程度与法罗高原3或4岁鳕鱼的总生物量呈正相关，而浅水区和深水区的猎物密度似乎影响较小。因此，比强势年份班级大一岁的年份班级分布比正常年份更深，反之亦然。在整个法罗高原，所有年龄段的深水中的cpue与鳕鱼的3-6岁生物量高度相关。对这些发现进行了有关食品利用和管理的讨论。

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