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首页> 外文期刊>ICES Journal of Marine Science >Bioeconomics of the Allee effect in fisheries targeting sedentary resources
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Bioeconomics of the Allee effect in fisheries targeting sedentary resources

机译：针对久坐资源的渔业中阿利效应的生物经济学

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摘要

The improvement of survival in some species due to the close coexistence between individuals is a concept that has caught the attention of scientists over the years. This behaviour has been documented in many taxa, including species which support commercial fisheries. In recent years, a better understanding of the mechanisms associated with the Allee effect has shown its importance in population dynamics and probably plays a more important role than previously thought. In this article, the Allee effect was analysed by means of a spatial bioeconomic model. The Allee effect component was the positive relationship between the mating probability and the density of spawners. A depensation function with an offset to the right side of the origin represented the fraction of females that mated based on density. When the model did not include the Allee effect, the fishery reached the bioeconomic equilibrium; however, when the Allee effect was considered, the fishery did not reach equilibrium, but the stock collapsed in 15 years. Fishing mortality altered the spatial distribution of the stock, causing depensation in recruits per spawner. These results may contribute to a better understanding of the Allee effect on sedentary resources and can be used to explore new models.
机译：由于个体之间的紧密共存，某些物种的存活率提高是多年来引起了科学家注意的一个概念。许多生物分类中都记录了这种行为，包括支持商业渔业的物种。近年来，对与Allee效应相关的机制有了更好的了解，显示了其在人口动态中的重要性，并且可能起着比以前认为的重要的作用。在本文中，通过空间生物经济模型分析了Allee效应。 Allee效应成分是交配概率与产卵密度之间的正相关关系。向原点右侧偏移的分居函数表示基于密度交配的雌性部分。当模型不包括Allee效应时，渔业达到了生物经济平衡。但是，考虑到阿利效应，渔业没有达到平衡，但是种群在15年内崩溃了。捕捞死亡率改变了种群的空间分布，导致每个产卵场的新兵数量减少。这些结果可能有助于更好地了解Allee对久坐资源的影响，并可用于探索新的模型。

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