Gametes from gravid Antarctic toothfish (Dissostichus mawsoni) were combined in vitro and buoyancy measurements were made on fertilised eggs during early development. Eggs were strongly positively buoyant, indicating that they would ascend quickly in the water column and reside near or in association with the underside of sea ice, which covers most of the spawning habitat during winter. An association with sea ice may provide: protection from the turbulence of ice-free surface waters, a mechanism that modifies the velocity of advection by surface currents, and a habitat with a concentrated planktonic food source during spring months. An association with sea ice would also create spatial differences in egg advection patterns for eggs produced spanning a large geographic area. The effects of climate change on sea ice formation and melting patterns, or fishery-induced changes in the spatial density of adults could then influence juvenile advection patterns and influence survival.

中文翻译：

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受精后 Dissostichus mawsoni 卵的浮力及其对早期生活史的影响

来自妊娠南极牙鱼 ( Dissostichus mawsoni) 的配子) 在体外结合，并在早期发育过程中对受精卵进行浮力测量。卵具有很强的正浮力，表明它们会在水柱中快速上升，并靠近或与海冰下面相连，海冰在冬季覆盖了大部分产卵栖息地。与海冰的联系可以提供：免受无冰地表水湍流的影响，通过地表水流改变平流速度的机制，以及在春季月份具有集中浮游食物来源的栖息地。与海冰的关联也会在跨越大地理区域生产的鸡蛋的鸡蛋平流模式中产生空间差异。气候变化对海冰形成和融化模式的影响，