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首页> 外文期刊>Biological invasions >Present and future invasion perspectives of an alien shrimp in South Atlantic coastal waters: an experimental assessment of functional biomarkers and thermal tolerance
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Present and future invasion perspectives of an alien shrimp in South Atlantic coastal waters: an experimental assessment of functional biomarkers and thermal tolerance

机译：南大西洋沿海水域的外星虾的目前和未来入侵观点：对功能生物标志物和热耐受的实验评估

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Climate change, particularly ocean warming, is thought to benefit the spread of invasive species due to their increased tolerance to temperature fluctuations as compared to native species. The physiological tolerance of invasive species as a potential mechanism driving invasion success is therefore a subject that merits further study. Specifically, we need to adequately evaluate the potential of species invasions under changing environmental conditions, so that adequate preventive measures can be taken to minimize any impacts on coastal ecosystems. Here, we experimentally evaluated the physiological responses of a recent invader in the Southern Atlantic, the shrimp Lysmata lipkei, under a warming ocean scenario. Adult shrimps were collected from rocky shores in southeastern Brazil and subjected to experimental trials under a control and a +3 degrees C scenario. Molecular biomarkers (in gills and muscle), upper thermal limits, acclimation response ratios, thermal safety margins, mortality rates, estimates of body condition and energy reserves were measured over 1month. Results suggest that higher temperatures elicit physiological adjustments at the molecular level, underpinning a high thermal tolerance. In addition, results indicated substantial acclimation capacity, with no evidence of decreased performance under an ocean-warming scenario. Thermal safety margins were low for shrimp from intertidal rock pools but high for shrimp from subtidal habitats. We conclude that the thermal tolerance of this shrimp species may favor its ongoing invasion along the Southwestern Atlantic Ocean, mainly in subtidal habitats, both under present and future thermal conditions.
机译：气候变化，特别是海洋变暖，被认为是有益于侵入物种的传播，因为与天然物种相比，由于它们增加了对温度波动的耐受性。因此，侵入性物种作为推动入侵成功的潜在机制的生理耐受性是一个优选进一步研究的主题。具体而言，我们需要充分评估物种入侵在不断变化的环境条件下的潜力，从而可以采取足够的预防措施来尽量减少对沿海生态系统的任何影响。在这里，我们在温暖的海洋情景下，通过实验评估了南部大西洋南部的最近入侵者的生理反应。从巴西东南部的岩石海岸收集成人虾，并在控制下进行实验试验和+ 3摄氏度。分子生物标志物（在鳃和肌肉中），上部热限制，适应响应比，热安全边缘，死亡率，体重和能量储备的估计量在1个月内被测量。结果表明，较高的温度引发了分子水平的生理调整，支撑高耐热性。此外，结果表明了大量的适应能力，没有下降在海洋温暖情景下的表现。来自跨境岩石池的虾虾的热安全边距很低，但从阴性栖息地的虾高。我们得出结论，这种虾类的热耐受性可能有利于沿着西南大西洋的持续入侵，主要是在目前和未来的热情条件下的恶性栖息地。

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