The authors declare that the experiments followed the Portu- guese and Brazilian legislation for animal experimentation. Two of the authors have a level C certification by the Federation of Eur- opean Laboratory Animal Science Associations(FELASA) and are also certified by national authorities (DirecçãoGeraldeVeter- inária). Authors would like to thank everyone involved in the field work and the maintenance of the experimental tanks, in particular Joseilto Medeiros de Oliveira and Elso Alves da Silva from CEBI- Mar-USP
This study had the support of the Portuguese Foundation for Science and Technology through the Warming Webs Project, PTDC/MAR-EST/2141/2012 ,the GrantSFRH/BPD/86566/2012 awarded to C. Vinagre and the strategic Project PEs t-OE/MAR/ UI0199/2011 granted to Centro de Oceanografia