Barange Corachan, ManuelZabala i Limousin, MikelRiera, TeclaGili, Josep Maria, 1953-2012-10-292012-10-2919890214-8358https://hdl.handle.net/2445/32431An in situ energy budget of the hydropolyp Eudendrium racemosum (Cavolini, 1785) is presented. Ingestion and respiration rates and ammonium excretion were studied over two 24 h cycles, with two-hour sample intervals. The species ingested as much as 25.9% of its own biomass per day (minimum rate). Respiration was 1.62 ml O2 g-1 d w h-1 while excretion was 13.6 mM NH4 g-1dw h-1. We estimated that the species increased its biomass at a rate of 9.6% per day (Growth + Reproduction). This value is higher than those previously reported for other cnidarians. We can assume that the capacity of E. racemosum to survive - albeit for a limited period of the year - in the highly-competitive shallow-water communities is based on its high growth rate.5 p.application/pdfengcc-by-nc (c) Consejo Superior de Investigaciones Científicas (CSIC), 1989http://creativecommons.org/licenses/by-nc/3.0/esHidrozousCnidarisMediterrània, MarHydrozoaCnidariaMediterranean Seainfo:eu-repo/semantics/article1210462012-10-29info:eu-repo/semantics/openAccess