From behaviour to genes: sex in the Japanesequail J. Balthazart 295
Thyroid hormone sulfation in chicken andaxolotl G.E. Reyns, E.R. Kühn and V.M. Darras 329
Changes of thyrotropin-releasing hormone (TRH) levels in brainregions and pituitary during induced metamorphosis of Ambystomamexicanum B. De Groef, V.M. Darras, L. Arckens,H.H.J. Gerets, E.R. Kühn and K.L. Geris 343
Is there a link between morphological, physiological and geneticvariability of the ophiuroid Amphipholissquamata? Samuel Dupont, Stephen Chaufer, Élie Poulin,Jean-Pierre Féral and Jérôme Mallefet 355
Rapid morphological changes following niche shift in thezooplanktivorous cyprinid Rastrineobola argentea from LakeVictoria Jan H. Wanink and Frans Witte 365
The origin and transformation of the palatine-maxillary systemof catfish(Teleostei: Siluriformes):an example of macroevolution Rui Diogo, Claudia Oliveira and Michel Chardon 373
Psychophysical test for bimodal integration of electroreception andphotoreception in the catfish Ictalurus nebulosusLeS J.A.M. Lorteije, F. Bretschneider, I. Klaver and R.C. Peters 389
