Understanding the implications of environmental disturbance is of growing importance as climate change and extreme weather events increasingly threaten estuaries and other coastal ecosystems. Among species at risk in estuarine habitats, sport fishes are of particular interest to conservation and management agencies, because of their ecological and economic value. Here, we evaluate the effects of Hurricane Harvey on the abundance, diet, and body condition of age-0 red drum (Sciaenops ocellatus) and spotted seatrout (Cynoscion nebulosus) in Powderhorn Lake, a nearshore estuary in Texas, USA. Catch data from seines indicated that the abundances of age-0 red drum and spotted seatrout were not affected by the hurricane in the study system, but stomach contents and morphometric data show that diet and body condition changed after the event. Both species exhibited declines in body condition based on weight-length ratios, and diets included a greater proportion of invertebrates (i.e., shrimp, crab) post-disturbance, which may have been attributed to changes in fish assemblage structure within the estuary. Trophic niche overlap between age-0 red drum and spotted seatrout also decreased by up to 50% after the event, potentially serving as a mechanism to reduce competition in response to decreased prey availability. Thus, while more easily measured indicators of resistance/resilience (i.e., abundance) did not indicate effects of Hurricane Harvey on sport fishes in Powderhorn Lake, body condition and diet suggest impacts were observed among age-0 fish. Declines in body condition and greater reliance on crustacean prey could have implications for survival, fitness, and harvestability, particularly if more energy is allocated to maintenance during recovery, rather than growth.

中文翻译：

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哈维飓风对河口苗圃少年运动鱼（弯尾，，弯尾鲷）营养状况的影响。

随着气候变化和极端天气事件日益威胁河口和其他沿海生态系统，了解环境干扰的影响变得越来越重要。在河口栖息地中处于危险之中的物种中，运动鱼类因其生态和经济价值而受到养护和管理机构的特别关注。在这里，我们评估了哈维飓风对0岁以下红鼓（Sciaenops ocellatus）和斑驳座位（Cynoscion nebulosus）的丰度，饮食和身体状况的影响）在美国德克萨斯州的近海河口Powderhorn湖中。围网渔获数据表明，研究系统中的飓风并未影响0岁以下红鼓和斑驳的座位的丰度，但胃内容物和形态计量数据表明事件后饮食和身体状况发生了变化。两种物种均显示出其基于体重/身高比的身体状况下降，并且饮食中的无脊椎动物（即虾，蟹）在骚扰后比例较高，这可能归因于河口内鱼类组合结构的变化。事件发生后，0岁红鼓和发现的色狼之间的营养生态位重叠也减少了多达50％，这可能是一种减少猎物可利用性的竞争机制。因此，虽然电阻/弹性指标更容易测量（i。（例如丰度）并未显示哈维飓风对Powderhorn湖运动鱼类的影响，身体状况和饮食暗示在0岁以下鱼类中观察到了影响。身体状况的下降和对甲壳类猎物的更多依赖可能会对生存，适应性和可收获性产生影响，特别是如果在恢复过程中分配更多能量用于维持而不是生长时。