Effect of chronic confinement on sperm quality and male reproductive physiology in Eurasian perch, Perca fluviatilis.

1. Aquaculture Research and Education Centre (CEFRA), University of Liege, 10 Chemin de la Justice, Tihange B-4500, Belgium. 2. Equine Clinic, Veterinary Medicine Faculty, University of Liege, Boulevard de Colonster 20, B-4000 Liege, Belgium. 3. Research Unit in Environmental and Evolutionary Biology, University of Namur, 61 chaussee de Bruxelles, 5000 Namur 4 Dipartimento VSA, Universita degli Studi di Milano, Italy *Corresponding author : Tel.:++3285274159, Fax.:++3285230592, email: C.Rougeot@ulg.ac.be