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The life cycle of krill is relatively well understood, despite minor variations in detail from species to species. [15] [24] After krill hatch, they experience several larval stages—nauplius, pseudometanauplius, metanauplius, calyptopsis, and furcilia, each of which divides into sub-stages. The pseudometanauplius stage is exclusive to species ...
Antarctic krill (Euphausia superba) is a species of krill found in the Antarctic waters of the Southern Ocean. It is a small, swimming crustacean that lives in large schools, called swarms , sometimes reaching densities of 10,000–30,000 animals per cubic metre. [ 3 ]
The average lifespan for the Thysanoessa is between three and four years. The development and growth of this organism takes place during winter to autumn. [ 3 ] Thysanoessa are broadcast spawners , meaning that the males will physically put their sperm onto the female's body so that the eggs become fertilized as the female releases them. [ 4 ]
These tiny, unsung heroes are the beating heart of the Southern Ocean, sustaining incredible marine life. Cait McCarry conducts krill research in Antarctica (University of Strathclyde)
The life cycle of krill is relatively well understood, although there are minor variations in detail from species to species. After hatching, the larvae go through several stages called nauplius, pseudometanauplius, metanauplius, calyptopsis and furcilia stages, each of which is sub-divided into several sub-stages.
Unlike most other krill species, the eggs of E. crystallorophias are neutrally buoyant, meaning they do not sink, and the hatchling larvae do not have to swim back to the more productive, shallower waters; however, since this means both life stages inhabit the same depths, how the larvae avoid being eaten by the adults is not known. [6]