title: [Testosterone production by the fetal testes of silver foxes selected for their domesticated behavior].
abstract: Testosterone content was determined by radioimmune assay in the testes of silver foxes between the 31st and 50th days of gestation. Small quantities of testosterone were found in the testes already at the 31st day of prenatal life, gradually increasing up to a maximum value at the 50th day. No significant difference in testosterone content was found between domesticated and undomesticated silver foxes during prenatal life. It is suggested that selection for domesticated behaviour affects rather central control of endocrine functions than steroid biosynthesis in the testes.
authors.forename: L V
authors.initials: LV
authors.lastname: Osadchuk
authors.forename: T A
authors.initials: TA
authors.lastname: Shurkalova
mesh_terms: D000818:Animals; D000829:Animals, Domestic; D000835:Animals, Wild; D001522:Behavior, Animal / Q000502:physiology*; D005589:Foxes / Q000502:physiology*; D005865:Gestational Age; D008297:Male; D012641:Selection, Genetic; D013737:Testis / Q000737:chemistry / Q000196:embryology / Q000378:metabolism*; D013739:Testosterone / Q000032:analysis / Q000378:metabolism*
chemical_list: D013739:Testosterone
vernacular_title: Produktsiia testosterona fetal'nymi semennikami serebristo-chernykh lisits, selektsioniruemykh na domestikatsionnoe povedenie.