title: Effect of single dose melatonin treatment on ovarian growth during the preparatory phase in Mystus tengara (Ham.).
abstract: In a single dose (250 microgram/fish), melatonin treatment of Mystus tengara (Ham.) during March resulted in significantly smaller ovaries than in control fish after 40 days. The melatonin treatment retarded the growth of oocytes, and is hence considered anti-gonadotropic in action.
mesh_terms: D000818:Animals; D005260:Female; D005399:Fishes / Q000502:physiology*; D008550:Melatonin / Q000494:pharmacology*; D009865:Oocytes / Q000166:cytology / Q000187:drug effects; D010053:Ovary / Q000187:drug effects* / Q000254:growth & development; D012621:Seasons
chemical_list: D008550:Melatonin