title: [Rate of sexual maturation of tame and aggressive gray rats].
abstract: The sexual maturation of female and male rats selected for domestic behaviour, occur much earlier than in aggressive animals as revealed by an earlier vagina opening in females and start of spermiogenesis in males. Hormonal activity of ovaries and testicles is also more obvious in the prepubertal period in domesticated male and female rats.
mesh_terms: D000374:Aggression / Q000502:physiology*; D000818:Animals; D000835:Animals, Wild / Q000502:physiology*; D005260:Female; D005836:Genitalia, Female / Q000254:growth & development; D005837:Genitalia, Male / Q000254:growth & development; D008297:Male; D051381:Rats; D012741:Sexual Maturation
vernacular_title: Skorost' polovogo sozrevaniia ruchnykh i agressivnykh serykh krys.