Queen scallop Aequipecten opercularis, is exploited by small-scale trawlers in separated aggregations along the east Atlantic coast and the Mediterranean Sea. However, population performance is poorly known. Here, we combine official information and on-board observers’ data over two decades to study the fishery ecology of an aggregation occurring in a coastal upwelling system (Ría de Arousa, NW Spain). Annual landings fluctuated around a mean of 170 tons while beam trawlers declined at a rate of 11 vessels per decade. A hurdle Bayesian spatial model fitted to observers’ catch and effort data showed that the probability of occurrence and abundance of the species increased with fishing effort and decreased in sandy bottoms. Moreover, abundance increased with upwelling intensity and decreased with continental runoff and along the fishing season. Furthermore, occurrence was higher in the inner part of the embayment while abundance increased in the central channel. The predicted index of standardized abundance correlated with the trend in landings, and year-to-year fluctuations in abundance were negatively and positively related to upwelling intensity and net primary production, respectively, during the spawning and settlement period.

女王扇贝Aequipecten opercularis小型拖网渔船是在东大西洋沿岸和地中海沿不同的集合体中利用的。但是，人口表现鲜为人知。在这里，我们结合了二十年来的官方信息和船上观察员的数据，以研究沿海上升流系统（西班牙西北阿里亚萨省里阿德阿鲁沙）中一个集合体的渔业生态。每年的平均起降幅度约为170吨，而光束拖网的下降速度为每十年11艘船。根据观察者的捕捞量和努力数据拟合的障碍贝叶斯空间模型表明，该物种出现和丰度的概率随着捕捞努力而增加，而在沙质底部减少。此外，丰度随着上升强度的增加而增加，随着大陆径流和整个捕鱼季节的减少而减少。此外，沉积物内部的发生率较高，而中央通道的丰度增加。在产卵期和沉降期，标准丰度的预测指数与着陆趋势相关，而丰度的逐年波动分别与上升强度和净初级生产成负相关。