The invasive White Perch Morone americana occurs intermittently throughout Kansas and is ubiquitous in three Kansas reservoirs. However, a paucity of information on the effectiveness of sampling gears for providing accurate and precise estimates of size structure and relative abundance for White Perch precludes reasonable assessments of the effectiveness of control measures. The North American standard gill net has been used to sample White Perch in Kansas since 2010. Previous studies have provided selectivity curves for several species that are sampled with this gear to mitigate overall size bias, which is inherently present in gill-net catches. However, White Perch populations have not been included in these initial studies. We fit selectivity models to catch data from three Kansas reservoirs to adjust the gill-net catch data for contact selectivity. We used the most parsimonious selectivity curve to adjust the values for White Perch capture at length for 10 years of catch data. Most of the adjusted samples resulted in meaningful changes to the length distributions. To test for the effectiveness of the North American standard gill net for sampling White Perch populations, we measured the precision of the relative abundance estimates for White Perch and the frequency of obtaining 100 stock-size fish with a standard sampling effort from 9 to 10 years of historical gill-net samples. Our results suggest the North American standard gill net provides precise and robust estimates for the relative abundance of stock-sized White Perch, but a correction factor that is derived from the selectivity curve might be needed to accurately estimate relative abundance for small individuals and to evaluate population size structure.

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使用北美标准鳃网对入侵的白鲈进行采样：来自堪萨斯州三个水库的信息

入侵的白鲈Morone americana间歇性地发生在整个堪萨斯州，并且在堪萨斯州的三个水库中无处不在。然而，关于提供准确和精确估计白鲈尺寸结构和相对丰度的采样装置有效性的信息缺乏，妨碍了对控制措施有效性的合理评估。自 2010 年以来，北美标准刺网已被用于在堪萨斯州对白鲈进行采样。以前的研究提供了几个物种的选择性曲线，这些物种使用这种装置进行采样，以减轻总体尺寸偏差，这在刺网捕获中是固有的。然而，白鲈种群并未包括在这些初步研究中。我们拟合选择性模型以捕获来自堪萨斯州三个水库的数据，以调整接触选择性的刺网捕获数据。我们使用最简约的选择性曲线来调整 10 年捕获数据的白鲈鱼捕获长度值。大多数调整后的样本对长度分布产生了有意义的变化。为了测试北美标准刺网对白鲈种群采样的有效性，我们测量了白鲈相对丰度估计值的精确度以及在 9 到 10 年的标准采样工作中获得 100 条种群大小的鱼的频率历史刺网样本。我们的结果表明，北美标准刺网为种群大小的白鲈的相对丰度提供了精确而可靠的估计，