Members of the freshwater catfishes (order Siluriformes) are capable of transintestinal expulsion of foreign bodies, including internally implanted tags, which can bias movement and survival estimates. We evaluated long‐term (120‐week) retention rates of passive integrated transponder (PIT) tags in a laboratory setting to assess potential tag loss in Stonecat Noturus flavus. The PIT tags were surgically implanted into the peritoneal cavity of fish (n = 157) ranging from 71 to 213 mm TL. We demonstrated that Stonecats can successfully be tagged with 12‐ and 23‐mm PIT tags with low levels of mortality (5.0%) and tag loss (9.6%). Based on individual encounter histories and covariates, we further evaluated our data set in a multistate framework using program MARK. Based on our findings, tag age has a negative effect on tag loss; if Stonecats lose tags, it is relatively soon after tagging. Additionally, Stonecat TL has a negative effect on tag loss, with tag loss decreasing with increasing fish TL.

中文翻译：

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保留小B鱼中的无源集成应答器标签

淡水cat鱼（Sil形目）的成员能够通过肠道驱逐异物，包括内部植入的标签，这可能会影响运动和生存估计。我们在实验室环境中评估了被动集成应答器（PIT）标签的长期（120周）保留率，以评估Stonecat Noturus flavus中潜在的标签丢失。将PIT标签通过外科手术植入鱼的腹膜腔内（n = 157），范围从71到213毫米TL。我们证明了Stonecats可以成功地用12毫米和23毫米PIT标签进行标记，这些标签具有较低的死亡率（5.0％）和标签丢失（9.6％）。基于个人遭遇历史和协变量，我们使用程序MARK在多状态框架中进一步评估了我们的数据集。根据我们的发现，标签年龄对标签丢失有负面影响；如果Stonecats丢失标签，则在添加标签后相对较早。此外，Stonecat TL对标签损失有负面影响，标签损失随着鱼类TL的增加而减少。