Antarctic krill (Euphausia superba) are a key component of the Antarctic food web with considerable lipid reserves that are vital for their health and higher predator survival. Krill lipids are primarily derived from their diet of plankton, in particular diatoms and flagellates. Few attempts have been made to link the spatial and temporal variations in krill lipids to those in their food supply. Remotely-sensed environmental parameters provide large-scale information on the potential availability of krill food, although relating this to physiological and biochemical differences has only been performed on small scales and with limited samples. Our study utilised remotely-sensed data (chlorophyll a and sea surface temperature) coupled with krill lipid data obtained from 3 years of fishery-derived samples. We examined within and between year variation of trends in both the environment and krill biochemistry data. Chlorophyll a levels were positively related to krill lipid levels, particularly triacylglycerol. Plankton fatty acid biomarkers analysed in krill (such as n-3 polyunsaturated fatty acids) increased with decreasing sea surface temperature and increasing chlorophyll a levels. Our study demonstrates the utility of combining remote-sensing and biochemical data in examining biological and physiological relationships between Antarctic krill and the Southern Ocean environment.

南极磷虾（Euphausia superba）是南极食物网的重要组成部分，具有大量的脂质储备，这对于它们的健康和更高的捕食者生存至关重要。磷虾脂主要来自其浮游生物的饮食，特别是硅藻和鞭毛虫。很少有人尝试将磷虾脂质的时空变化与其食物供应中的时空变化联系起来。遥感环境参数提供了有关磷虾食品潜在供应量的大规模信息，尽管这与生理和生化差异有关，但仅在小规模和有限的样品中进行。我们的研究利用了遥感数据（叶绿素a和海面温度），再加上从3年的渔业样本中获得的磷虾脂质数据。我们研究了环境和磷虾生物化学数据的年内和年内趋势变化。叶绿素a水平与磷虾脂质水平呈正相关，尤其是三酰基甘油。磷虾中分析的浮游生物脂肪酸生物标志物（例如n-3多不饱和脂肪酸）随着海表温度的降低和叶绿素a含量的增加而增加。我们的研究表明，结合遥感和生化数据来检查南极磷虾与南大洋环境之间的生物学和生理关系是有用的。