PSYC 3070 Lecture Notes - Lecture 6: Cuckold, Concealed Ovulation, Estrous Cycle
Document Summary
Estrus: found in nearly all placental mammals, behavioral. Increase in sexual activity and receptivity corresponding got the period of fertility surrounding ovulation: physiological changes. Conspicuous changes in physical appearance which indicate the fe(cid:373)ale"s se(cid:454)ual. Estrus lost in humans? receptivity and fertility: humans have sex consitantly across ovulatory cycle. Also true for bonobos and chimps, but frequency does change in wild: humans display no conspicuous signs of ovulation. Bonobos and chimps do have sexual swelllings. Concealed ovulation present in some other monogamous species such as vervet monkeys: hu(cid:373)a(cid:374)s o(cid:374)l(cid:455) spe(cid:272)ies (cid:449)hi(cid:272)h does(cid:374)"t displa(cid:455) at least o(cid:374)e (cid:272)o(cid:373)po(cid:374)e(cid:374)t. Ovulatory cycle: mammals display a variety of ovulatory cycles. Only fertile 1 o 2 times a year with seasonal changes. Cycles as short as 4-5 days and recurrent. Ovulation induced by intromission or pheromones, whitten effect. Wilcox, weinburg, and barid: ovulation occurs on day 14, dramatic change in likelihood of conception. 8-36% day of ovulation and 5 days prior.
