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首页> 外文期刊>North American Journal of Fisheries Management >Examining the Severity of Roof-Hooking Injuries in Dolphinfish: a Comparison between Computed Tomography and Gross Necropsy
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Examining the Severity of Roof-Hooking Injuries in Dolphinfish: a Comparison between Computed Tomography and Gross Necropsy

机译：检查海豚堆积损伤的严重程度：计算机断层扫描与尸检的比较

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摘要

We describe hook trauma to the roof of the mouth in Dolphinfish Coryphaena hippurus and compare computed tomography (CT) scanning to gross necropsy (GN) as a technique for diagnosing hooking injury in fish. Forty-two Dolphinfish carcasses spanning a range of hook injuries were collected and CT scanned, and 33 of those carcasses were evaluated using GN. Specimens were hooked either in the roof of the mouth, the eye via the roof or upper jaw, or the jaw (control group). In 75% of roof-hooked individuals, GN revealed nondisplaced to comminuted fractures of the bones of the suspensorium, hematomas in and laceration of the extraocular muscles, and/or damage to the optic nerve. These injuries have the potential to compromise vision and therefore decrease postrelease survival rates of obligate sight-feeding species such as the Dolphinfish. We evaluated the effectiveness of CT scanning to diagnose injury and found that CT could efficiently and accurately identify fractures and some soft-tissue damage, but some injuries found in GN (e.g., optic nerve damage) were not observed on CT scans. Based on our findings, it is likely that mortality is greater in Dolphinfish when hooked in the roof of the mouth than when hooked in the jaw. This study demonstrates a novel technique that was effective at diagnosing hooking injuries associated with the roof of the mouth.
机译：我们将钩子创伤与海豚鱼类植物海豚河Hippurus的屋顶描述，并将计算的断层扫描（CT）扫描到尸检（GN）作为诊断鱼中钩伤的技术。收集跨越一系列钩损伤的四十二个海豚尸体，使用GN评估CT扫描和33种尸体。标本在口腔屋顶上钩，通过屋顶或上颌或钳口（对照组）。在75％的屋顶钩住的人中，GN揭示了悬浮液的骨骼的粉碎骨折，血管瘤的骨折，血管瘤和/或视神经损坏的粉碎。这些损伤具有损害视力的潜力，因此降低了雌性瞄准物种如海豚鱼类的雌性酶活性率。我们评估了CT扫描诊断损伤的有效性，发现CT可以有效准确地识别骨折和一些软组织损伤，但在CT扫描上未观察到GN（例如，视神经损伤）中发现的一些伤害。基于我们的研究结果，当钩在嘴屋顶上的海豚时，死亡率可能比在颌骨上钩在嘴巴的屋顶上。该研究表明了一种新颖的技术，可有效诊断与嘴顶相关的钩钩伤。

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