Large, lipid-storing copepods play a central role in marine Arctic ecosystems. Knowledge of the mechanisms that control their oogenesis is important for understanding their phenology and population dynamics. We investigated the impact of female lipid content on the timing and cumulative egg production (EP) of Calanus hyperboreus at 0, 3 and 6°C. The lipid content of females in early autumn was a good predictor of their EP potential. However, we saw no indication of a threshold in lipid content for initiation of spawning. Higher temperature resulted in 17 and 24 days earlier spawning at 3 and 6°C compared with 0°C, and the mean spawning duration was 8 and 30 days shorter, respectively. This illustrates that temperature affects the phenology of C. hyperboreus. When EP began, lipid metabolism increased 2–4 times. The females allocated 1.3 μg lipid per egg independent of temperature. However, the basic metabolism increased with increasing temperature; consequently, a smaller fraction of lipid was allocated for EP when the temperature increased.

中文翻译：

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温度和脂质蓄积对高柏乌鱼产卵开始和持续时间的重要性

大型的储脂co足类动物在海洋北极生态系统中发挥着核心作用。掌握控制卵子发生的机制的知识对于理解它们的物候和种群动态非常重要。我们调查了雌性脂质含量对0、3和6°C时超bor的时间和累积产卵量（EP）的影响。初秋雌性动物的脂质含量可以很好地预测其EP潜能。然而，我们没有看到产生卵子的脂质含量阈值的迹象。较高的温度导致3和6°C的产卵时间比0°C早17和24天，平均产卵时间分别短8和30天。这说明温度会影响硼葡萄球菌的物候。当EP开始时，脂质代谢增加了2-4倍。雌性为每个鸡蛋分配了1.3μg脂质，与温度无关。然而，基本代谢随着温度的升高而增加。因此，当温度升高时，将较小比例的脂质分配给EP。