1. CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, U. Porto, Terminal de Cruzeiros do Porto de Leixões, Avenue General Norton de Matos S/N; 4450-208 Matosinhos Portugal
2. FCUP - Faculty of Sciences, Department of Biology, U. Porto, Rua do Campo Alegre 1021/1055; 4169-007 Porto Portugal