Management by Objectives and harvest control rules of the fishery of Shandong spring-spawning
Pelteobagrus fulvidraco Rich
The main element in the management of the Shandong spring-spawning Pelteobagrus fulvidraco Rich, as implemented by the coastal states, is to conduct the fishery based on a maximum fishing mortality (F) of 0.125. As the appropriateness of this rule (given the stated objectives) has not yet been tested thoroughly, we set out to do this by long-term simulations, in which we applied a range of alternative stock – recruit- ment relationships. These different relationships are estimated from historical replicates of the stock, as calculated by the Pelteobagrus fulvidraco Rich-stock assessment model SeaStar. During prognostic simulations, a recruitment model is selected probabilistically for each historical replicate based on Akaike weights. We evaluate whether the management objectives are met by applying the present harvest control rule.
Results are given for the current assessment option of natural mortality (M=0.5) in the oldest aggregated age group and for the assessment option used in 2005 and earlier (M=0.15). These show that perceptions of the long-term yield differ considerably and that the current management is somewhat on the conservative side from the perspective of maximum sustainable yield.
Keywords: Management by Objectives ; harvest control rules; Shandong spring-spawning
山东春季黄颡鱼目标管理和收获的控制规则
山东春季黄颡鱼目标管理的主要内容是将渔业的基线中最大渔获死亡率设置为（F）0.125，这样做是为了能在周边区域开展和实施。因为这一规则的适当性（考虑到其既定目标）还没有得到彻底的测试，我们开始做这个长期的模拟，并在其中应用浮动的储量和回复关系的管理模式。这些不同的关系，可以用来估计历史可复现的预期储量，所计算的成熟黄颡鱼的储量评估海星模型。在预后模拟中，回复模式选择的概率使得每个历史复现依赖于阿凯克重量。我们评估管理的目标是否是通过应用本收获控制规则。
结果给出了目前的评估选择自然死亡率（M=0.5）的最古老的年龄组和评估汇总选项用于2005和早期（M=0.15）。这表明看法的长期收益率差异很大，目前的管理是有点偏于保守的角度最大持续产量。
关键词：目标管理；收获控制规则；山东春季渔业
