Institute of Marine Science, The University of Auckland, Auckland, 1010, New Zealand.
NSW Department of Primary Industries, Sydney Institute of Marine Science, Mosman, New South Wales, 2088, Australia.
Mar Environ Res. 2020 Apr;156:104918. doi: 10.1016/j.marenvres.2020.104918. Epub 2020 Feb 7.
Spiny lobster post-larvae undertake an extensive migration from the open ocean to the coast, during which time their swimming is fueled solely by energy reserves accumulated through their preceding larval phase. We assessed the influence of future ocean temperatures on the swimming behavior and energy use of migrating post-larvae of Sagmariasus verreauxi, by experimentally swimming post-larvae for up to 6 days at three temperatures and measuring the lipid and protein used, and observing their time spent actively swimming. Increasing the temperature from 17 °C to 23 °C doubled the energy utilized by post-larvae while swimming, while also reducing the time they spent swimming by three times. Therefore, increasing ocean temperatures appear to greatly affect the energetic cost and efficiency of shoreward migration of post-larvae in this lobster species, with the potential to markedly impact post-larval recruitment into coastal populations under future scenarios of ocean warming.
棘皮龙虾幼体在从公海向海岸的广泛迁移过程中，仅靠其先前的幼虫阶段积累的能量储备来提供游泳所需的能量。我们通过在三个温度下对幼体进行长达 6 天的实验性游泳来评估未来海洋温度对正在迁移的 S. verreauxi 幼体游泳行为和能量利用的影响，并测量了消耗的脂质和蛋白质，以及观察它们主动游泳的时间。将温度从 17°C 升高到 23°C 会使幼体游泳时消耗的能量增加一倍，同时使它们游泳的时间减少三倍。因此，海洋温度的升高似乎会极大地影响这种龙虾幼体向海岸迁移的能量成本和效率，这可能会对未来海洋变暖情景下幼体向沿海种群的补充产生显著影响。
