Globally, millions of people depend on nutritional benefits from seafood consumption, but few studies have tested for effects of near-future climate change on seafood health and quality. Quantitative assessments of the interactive effects of climate change and discarding of fisheries resources are also lacking, despite ∼10% of global catches being discarded annually. Utilising the harvested blue swimmer crab (Portunus armatus), we experimentally tested the effects of near-future temperature and salinity treatments under simulated capture and discarding on a suite of health and nutritional quality parameters. We show that nutritional quality (protein, lipids, moisture content and fatty acid composition) was not significantly affected by near-future climate change. Further, stress biomarkers (catalase and glutathione S-transferases activity and glycogen content) did not differ significantly among treatments following simulated capture and discarding. These results support the inherent resilience of P. armatus to short-term environmental change, and indicate that negative physiological responses associated with discarding may not be exacerbated in a future ocean. We suggest that harvested estuarine species, and thus the industries and food security they underpin, may be resilient to the future effects of climate change due to their adaptation to naturally variable habitats.

在全球范围内，数以百万计的人依赖海鲜消费带来的营养益处，但是很少有研究对近期气候变化对海鲜健康和质量的影响进行测试。尽管每年约有10％的全球捕捞量被丢弃，但也缺乏对气候变化与渔业资源丢弃的互动影响的定量评估。利用收获的蓝色游泳蟹（Portunus armatus）），我们在模拟的捕获和丢弃条件下，通过实验测试了近期温度和盐度处理对一系列健康和营养质量参数的影响。我们表明，营养质量（蛋白质，脂质，水分含量和脂肪酸组成）不受近期气候变化的显着影响。此外，模拟捕获和丢弃后，各处理之间的应激生物标记（过氧化氢酶和谷胱甘肽S-转移酶活性和糖原含量）没有显着差异。这些结果支持了P. armatus固有的适应力与短期环境变化有关，并表明与丢弃有关的负面生理反应在未来的海洋中可能不会加剧。我们建议收获的河口物种，以及它们所支撑的产业和粮食安全，可能因其适应自然可变的栖息地而对气候变化的未来影响具有弹性。