title: [Effect of long-term selection for behavior on progesterone level in blood and its level in adrenal glands of silver fox embryos].
abstract: The level of progesterone in blood serum and its concentration in adrenals and gonads have been assayed in male and female silver fox embryos, starting from day 35 of pregnancy for every five days. Pregnant females from an experimental population, selected for the domestic type of behavior and, as a control group, females from a commercial population, were used. At the end of prenatal development (days 45-50) the concentration of progesterone in adrenals was show to be significantly lower in embryos from mothers of the selected population, than in the unselected control group. On the contrary, the domesticated and wild animals did not differ in the level of progesterone in blood. The results suggest that selection of animals for domestic behavior decreases the synthesis of progesterone by embryonic adrenal glands.
authors.affiliation: Institute of Cytology and Genetics, Siberian Division, Russian Academy of Sciences, Novosibirsk, Russia.
authors.forename: L V
authors.initials: LV
authors.lastname: Osadchuk
mesh_terms: D000311:Adrenal Glands / Q000196:embryology / Q000378:metabolism*; D000818:Animals; D001522:Behavior, Animal; D005314:Embryonic and Fetal Development; D005260:Female; D005589:Foxes / Q000235:genetics*; D008297:Male; D011247:Pregnancy; D011374:Progesterone / Q000096:biosynthesis / Q000097:blood / Q000378:metabolism; D012641:Selection, Genetic
chemical_list: D011374:Progesterone
vernacular_title: Effekty dlitel'noĭ selektsii po povedeniiu na uroven' progesterona v krovi i ego soderzhanie v nadpochechnikakh u émbrionov serebristo-chernykh lisits.