Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
Two laboratory studies evaluated small Chinook salmon (Oncorhynchus tshawytscha) (36–99 mm fork length (FL), 0.7%–26.7% tag burden) survival, tag retention, and growth (n = 539) and critical swimming speed (Ucrit; n = 241). Fish were implanted with a new active acoustic tag and compared with untagged controls at 12 and 17 °C. Across studies, no temperature differences were detected. All control fish survived. All tagged fish ≥58 mm FL survived and retained their tags. Regression models predicted ≥98.6% survival and retention for tagged fish ≥58.6 mm FL or ≥1.9 g (4.2% tag burden). No growth differences among treatments were identified. Spline regression analysis indicated Ucrit was similar for control and tagged fish that measured ≥57.3 mm FL. We recommend tagging salmon ≥59 mm FL or ≥1.9 g (≤4.2% tag burden), although the guideline should be confirmed in a field setting. Study results represent an important step towards using the new active tag in acoustic telemetry field studies that estimate short-term (30-day) survival of small salmonids.

中文翻译：

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从 95 到 59 毫米：适用于鲑鱼的新的有源声学标签尺寸指南

加拿大渔业和水产科学杂志，提前印刷。
两项实验室研究评估了小型奇努克鲑鱼（Oncorhynchus tshawytscha）（36–99 毫米叉长 (FL)，0.7%–26.7% 标签负担）存活率、标签保留率和生长（n = 539）和临界游泳速度（Ucrit；n = 241）。鱼被植入了新的有源声学标签，并在 12 和 17 °C 下与未标记的对照进行了比较。在整个研究中，没有检测到温度差异。所有对照鱼都存活了下来。所有标记的鱼 ≥ 58 mm FL 都存活并保留了它们的标记。回归模型预测 ≥58.6 毫米 FL 或 ≥1.9 克（4.2% 标签负担）的标记鱼的存活率和保留率≥98.6%。未发现处理间的生长差异。样条回归分析表明，Ucrit 对于测量 ≥ 57.3 mm FL 的对照鱼和标记鱼是相似的。我们建议标记 ≥59 毫米 FL 或 ≥1.9 克（≤4.2% 标记负担）的鲑鱼，尽管应在现场设置中确认该指南。研究结果代表了在声学遥测领域研究中使用新的有源标签的重要一步，该研究估计了小鲑鱼的短期（30 天）存活率。