1. Laboratory of Zoology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
2. Laboratory of Animal Physiology, Department of Zoology, School of Biology, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
3. Department of Ichthyology and Aquatic Environment, Faculty of Agricultural Sciences, University of Thessaly, Fytoko street, GR-38445 Volos, Greece
4. Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON, Canada, K1S 5B6