1. Control of Food Intake Group, Department of Fish Physiology and Biotechnology, Instituto de Acuicultura de Torre de la Sal, IATS-CSIC, 12595 Castellon, Spain
2. Behavioural Neuroendocrinology, Department of Medical Cell Biology, Uppsala University, 751 23 Uppsala, Sweden
3. Behavioural Neuroendocrinology, Department of Neuroscience, Uppsala University, 751 24 Uppsala, Sweden
4. Centro de Investigación Mariña, Laboratorio de Fisioloxía Animal, Departamento de Bioloxía Funcional e Ciencias da Saúde, Facultade de Bioloxía, Universidade de Vigo, 36310 Vigo, Spain
5. Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, 750 07 Uppsala, Sweden