European marine statistics report a growth metabolism observed in jellyfish polyps; the population boom of jellyfish in open waters is due “to a large extent, by the timing and magnitude of production of young jellyfish (ephyrae) by polyps living in bottom habitats. Metabolic rates of polyps were measured between 7 and 20°C in three different species of jellyfish in the Aurelia genus and Cyanea capillata. The work attempted to better understand how temperature and low oxygen concentration (hypoxia) constrain suitable habitats of this benthic life stage. With these data, one can not only better map the distribution of polyps but also understand how their productivity changes seasonally.” (www.marine-vectors.eu)
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