Seasonality of food supply is a major driver of physiological and ecological adaptations of marine zooplankton. High-latitude marine copepods accumulate lipids for maintenance and reproductive maturation during the food-depleted winter period. The relationship between latitude and lipid storage in copepods is well established, but it is influenced by many factors, such as trophic position, sex, and depth distribution. In this study, the influence of latitude and collection depth, trophic level, sex, and the presence or absence of dormancy on the relative amount and composition of lipids stored was assessed by analysing published data. Our analyses confirmed higher lipid contents (expressed as % dry weight) in high-latitude species, and in deep-dwelling tropical copepods compared to shallow-living ones. Contrary to our original hypothesis, carnivorous and herbivorous copepods had similar lipid levels. Copepod species that undergo dormancy had higher levels of wax ester and were more common at polar and temperate latitudes. Lastly, adult male and female copepods did not significantly differ in the amount of lipids they store, suggesting that the portion of male reproductive investment, which may depend on lipid stores, has been underestimated. Taken together, these results both confirm some previously reported trends and refute others.

中文翻译：

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海洋co足类动物的脂质存储模式：环境，生态和内在驱动因素

食物供应的季节性是海洋浮游动物生理和生态适应的主要驱动力。在食物匮乏的冬季，高纬度海洋co足类动物积累脂质，以维持和生殖成熟。co足类中纬度与脂质储藏之间的关系已经很好地建立，但是它受许多因素的影响，例如营养位置，性别和深度分布。在这项研究中，通过分析已发布的数据，评估了纬度和收集深度，营养水平，性别以及是否存在休眠对脂质的相对含量和组成的影响。我们的分析证实，与浅层生活的pe足类动物相比，高纬度物种以及深居热带pe足类动物的脂质含量更高（表示为干重％）。与我们最初的假设相反，食肉和草食co足类动物的脂质水平相似。处于休眠状态的足类物种的蜡酯含量较高，在极地和温带地区更常见。最后，成年雄性和雌性co足类动物的脂质存储量没有显着差异，这表明可能低估了脂质存储量的男性生殖投资部分。综上所述，这些结果既证实了先前报道的某些趋势，又反驳了其他趋势。低估了可能取决于脂质存储的脂质。综上所述，这些结果既证实了先前报道的某些趋势，又反驳了其他趋势。低估了可能取决于脂质存储的脂质。综上所述，这些结果既证实了先前报道的某些趋势，又反驳了其他趋势。