title: Effect of altered photoperiod on serum gonadotrophin and testosterone levels in male rainbow trout [proceedings].
mesh_terms: D000818:Animals; D006065:Gonadotropins, Pituitary / Q000097:blood*; D008027:Light; D008297:Male; D010507:Periodicity; D012487:Salmonidae / Q000097:blood*; D013739:Testosterone / Q000097:blood*; D014337:Trout / Q000097:blood*
chemical_list: D006065:Gonadotropins, Pituitary; D013739:Testosterone