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首页> 外文期刊>ICES Journal of Marine Science >Age and growth rate estimations of the commercially fished gastropod Buccinum undatum
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Age and growth rate estimations of the commercially fished gastropod Buccinum undatum

机译：商业化捕捞腹足动物Buccinum undatum的年龄和增长率估算

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摘要

Calculating age and growth rate for the commercially important whelk, Buccinum undatum in the aid of fishery management has historically been undertaken using growth rings on the organic operculum. This is difficult due to their poor readability and confusion between two different sets of growth lines present. Recent work presented the calcium carbonate statolith as an alternative for age determination of B. undatum. Here we compare the use of statoliths and opercula, comparing their readability and creating growth curves for three distinct populations across the United Kingdom. Using these data, we also test the most appropriate growth equation to model this species. Lastly, we use oxygen isotope analysis of the shells to assign accurate ages to several individuals from each site. These data were used to test the accuracy of statolith and operculum ages. Statoliths, whilst more time consuming to process have improved clarity and accuracy compared with the opercula. This improved readability has highlighted that a Gompertz growth function should be used for populations of this species, when in past studies, von Bertalanffy is often used. Statoliths are a viable improvement to opercula when assessing B. undatum in the context of fishery monitoring and management.
机译：历史上，已经使用有机盖上的年轮进行了商业上重要的海螺（Buccinum undatum）的年龄和生长率的计算，以帮助渔业管理。这是困难的，因为它们的可读性差，并且存在两组不同的生长线之间的混淆。最近的工作提出了碳酸钙石笋作为确定月牙芽孢杆菌年龄的替代方法。在这里，我们比较了石板和盖的使用，比较了它们的可读性，并为英国的三个不同人群绘制了生长曲线。使用这些数据，我们还测试了最合适的生长方程来对该物种进行建模。最后，我们使用贝壳的氧同位素分析为每个地点的几个人分配准确的年龄。这些数据被用来测试吻合石和盖年龄的准确性。与炮眼相比，石蕊石虽然处理时间更短，但清晰度和准确性更高。可读性的提高突出表明，该物种的种群应使用Gompertz生长函数，而在过去的研究中，经常使用von Bertalanffy。在渔业监测和管理范围内评估云纹芽孢杆菌时，石笋是对oper盖的切实可行的改进。

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