Caputo Michelle, O'Connor Constance M, Hasler Caleb T, Hanson Kyle C, Cooke Steven J
Fish Ecology and Conservation Physiology Laboratory, Ottawa-Carleton Institute of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada.
Dis Aquat Organ. 2009 Mar 9;84(1):35-41. doi: 10.3354/dao02025.
Little is known about the long-term consequences of surgically implanted telemetry devices on wild fish, as they are rarely recaptured. We used wild largemouth bass Micropterus salmoides as a model to evaluate the long-term impacts of telemetry devices on fish physiology and nutritional condition in a closed freshwater lake where recapture rates were reasonably high. Between 2003 and 2005, 68 fish were surgically implanted with acoustic telemetry devices. Between 2005 and 2008, 17 of the tagged fish were recaptured after carrying a transmitter for 335 to 1402 d. Incision sites were examined, and individuals were non-lethally sampled for blood and measured prior to release. Plasma samples were analysed, and physiological measures of stress (glucose, Na+, Cl-, K+), tissue damage (aspartate aminotransferase), and nutritional status (Ca++, Mg+, phosphorus, total protein, triglycerides, cholesterol) were compared between fish carrying transmitters and temporally- and size-matched controls. Of the 17 recaptured fish, 3 retained at least 1 of the absorbable monofilament sutures and showed localised signs of inflammation and infection despite an elapsed time of 362 d post surgery. Five individuals showed signs of pressure necrosis at the incision site despite the fact that the transmitters averaged only 1.89% (range: 0.84 to 3.59%) of the body mass. There was no difference in any physiological parameter measured between the 2 groups, or within the telemetered fish, in relation to days since tagging or condition of the incision site. In summary, transmitter implantation was not correlated with any long-term change in any of the physiological parameters investigated. However, there is opportunity for additional research to optimise surgical techniques, guidelines on transmitter mass to body mass ratios, and choice of suture material to enhance the healing and long-term welfare of tagged fish.
对于通过手术植入的遥测设备对野生鱼类的长期影响，人们了解甚少，因为它们很少被重新捕获。我们以野生大口黑鲈（Micropterus salmoides）为模型，在一个封闭的淡水湖中评估遥测设备对鱼类生理和营养状况的长期影响，该湖的重新捕获率相当高。在2003年至2005年期间，对68条鱼进行了手术植入声学遥测设备。在2005年至2008年期间，17条带标记的鱼在携带发射器335至1402天后被重新捕获。检查了切口部位，并在放生之前对个体进行了非致死性血液采样和测量。分析了血浆样本，并比较了携带发射器的鱼与时间和大小匹配的对照鱼之间的应激生理指标（葡萄糖、Na+、Cl-、K+）、组织损伤（天冬氨酸转氨酶）和营养状况（Ca++、Mg+、磷、总蛋白、甘油三酯、胆固醇）。在17条重新捕获的鱼中，3条至少保留了1根可吸收单丝缝线，尽管手术后已过去362天，但仍显示出局部炎症和感染迹象。5条个体在切口部位出现了压迫性坏死迹象，尽管发射器平均仅占体重的1.89%（范围：0.84%至3.59%）。两组之间或遥测鱼内部，在所测量的任何生理参数方面，与标记后的天数或切口部位状况均无差异。总之，发射器植入与所研究的任何生理参数的任何长期变化均无关联。然而，仍有机会开展更多研究，以优化手术技术、发射器质量与体重比的指导原则以及缝线材料的选择，从而提高标记鱼的愈合能力和长期健康状况。
