1. Centre for Environment, Fisheries and Aquaculture Science, Weymouth Laboratory, Barrack Road, Weymouth, Dorset, United Kingdom DT4 8UB
2. Centre for Environment, Fisheries and Aquaculture Science, Burnham Laboratory, Remembrance Avenue, Burnham-on-Crouch, Essex, United Kingdom CM0 8HA
3. Institute of Forestry and Game Management, Duboislaan 14, B-1560 Hoeilaart, Belgium