A Quantitative Description of the Behavior of Rats During Copulation

摘要: In the normal sequence of events during copulation in laboratory rats, distinctive ejaculatory thrust male is preceded by a series mounts with and without vaginal intromission, followed period copulatory inactivity prior to next intromissions. 1922, after study development sexual behavior pattern rat, C. P. STONE concluded that course encounter, "both males females devote greater part their time performance activities have no relation act". Indeed, if one combines data BEACH & JORDAN (I956) as representative typical frequency those PIERCE NUTTALL (I96I) intromission duration data, finds less than per cent rat sex test spent actual intromission. Yet, there has been little systematic which occurs remaining 99 session. Most work on frequencies temporal spacing mounts, intromissions, ejaculations constitute such small, albeit most interesting, total activity. The complete (I922) maturing rats. As was primarily interested changes rats matured, he had say about within sessions. GRANT MACKINTOSH (I963) gave brief qualitative description some mating postures rat. Occasional reference made patterns ear-wiggling, back-kicking, hopping female (cf. BEACH, I942; I943; 1956), yet pattern. Knowledge