You have requested access to download the full text of the source (SourceID: 283635):
Pérez-Porro, A.R.; González, J.; Uriz, M.J. (2012). Reproductive traits explain contrasting ecological features in sponges: the sympatric poecilosclerids Hemimycale columella and Crella elegans as examples. In: Maldonado M, Turon X, Becerro MA, Uriz MJ (eds) Ancient Animals, New Challenges. Sponge Research Developments. Hydrobiologia. 687, 315-330.