Hormonal Control of Sexual BehaviorLaboratory AnimalsFemale Sexual BehaviorThe female will also move her tailaway(if she has one) and standrigidly enough to support the weightof the male•If a male attemptsto copulate with anonreceptive rodent, the female will eitheractively flee or rebuff him.•When the female is in a receptive state, shewill often approach the male, nuzzle him,sniff his genitals, and show behaviorscharacteristicof her speciesàquick, short,hopping movements and rapid ear wiggling.•Lordosis – estradiol.Hormonal Control of Sexual BehaviorLaboratory AnimalsFemale Sexual Behavior
9/9/1626•In rats, estradiol increases about 40 hours before the female becomes receptive;and just before receptivity occurs, the corpus luteum begins secreting largequantities of progesterone.•Ovariectomized rats (ratswhose ovaries have been removed) arenot sexuallyreceptive.•Receptivity can be produced in ovariectomized rodents by administering largedoses of estradiol alone•The most effective treatment duplicates the normal sequence of hormones: asmall amount of estradiol, followed by progesterone.Hormonal Control of Sexual BehaviorLaboratory AnimalsFemale Sexual Behavior•Progesterone does not rescue receptivity in ovariectomized rats.•Priming with estradiol takes about 16–24 hours, after which an injection ofprogesterone produces receptive behaviors within an hour.•Rissman et al., (1997): female mice without estrogen receptors wereunreceptiveto males even after treatment with estradiol and progesterone.•Lydon et al. (1995) female mice without progesterone receptors = unreceptive tomales even after treatment with estradiol and progesterone.Hormonal Control of Sexual BehaviorLaboratory AnimalsFemale Sexual Behavior
9/9/1627•Estradiol + Progesterone = 3 effects on female rats.•Receptivityàability and willingness to copulate—to accept the advances of amale by holding still and displaying lordosis when he attempts to mount her.•Proceptivityàfemale’s eagerness to copulate = seeks out a male and engagesin behaviors that tend to arouse his sexual interest.•Attractivenessàphysiological and behavioral changes that affect the male.The male rat is most responsive to females who are in estrus.Hormonal Control of Sexual BehaviorLaboratory AnimalsFemale Sexual Behavior•Males will ignore a female whose ovaries have been removed, butinjections of estradiol and progesterone will restore her attractiveness(and also change her proceptivity and receptivity toward the male).•The stimuli that arouse a male rat’s sexual interest = odor and behavior.•In some species, visible changes, such as swollen skin in the genitalregion of a female monkey, also affect sex appeal.Hormonal Control of Sexual BehaviorLaboratory AnimalsFemale Sexual Behavior
9/9/1628doi: 10.3389/fnins.2012.00010Hormonal Control of Sexual BehaviorDOI: 10.1358/mf.2004.26.7.863737
9/9/1629•Women do not show obvious physicalchanges duing the fertile period of theirmenstrual cycle, but some subtle changes dooccur.