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Concealed ovulation or hidden estrus is the lack of any perceptible change (e.g., a change in appearance or scent) when an adult female is fertile and near ovulation.Some examples of perceptible changes are swelling and redness of the vulva in baboons and bonobos, and pheromone release in the feline family.
Additionally, they do not show obvious physical signals of high fertility. This has led many researchers to conclude that humans lost their estrus through evolution. [11] [page needed] It has been hypothesized that this could be due to the adaptive benefits of concealed ovulation and extended sexuality. [12] [page needed] [13] [page needed]
Jones described the book as engaging and interesting. However, he questioned Diamond's treatment of concealed ovulation, finding it inconclusive. [3] The anthropologist Peter B. Gray and the evolutionary biologist Justin R. Garcia maintained that Why Is Sex Fun? was one of the best-read books on human sexuality. However, they considered it ...
The evolution of concealed ovulation has been theorized to be a result of altriciality and increased need for paternal investment—if men are unsure of the time of ovulation, the best way to successfully reproduce would be to repeatedly mate with a woman throughout her cycle, which requires pair bonding, which in turn increases paternal ...
By evolving concealed ovulation and continuous receptivity, females force males into longer periods of consortship if they are to have a good chance of achieving impregnation (figures c,d). [23] Reproductive synchrony—whether seasonal, lunar or a combination of the two—is a key strategy for reproductive levelling, reducing paternity skew ...
This is achieved through concealed ovulation in most animals that exhibit extended female sexuality. [19] A review of studies revealed that, in humans, females only exhibit subtle changes during estrus, making it difficult for males to assess fertility with precision. [20]
From ancient history to the modern day, the clitoris has been discredited, dismissed and deleted -- and women's pleasure has often been left out of the conversation entirely. Now, an underground art movement led by artist Sophia Wallace is emerging across the globe to challenge the lies, question the myths and rewrite the rules around sex and the female body.
Pawłowski B. (1999) – Loss of oestrus and concealed ovulation in human evolution: the case against the sexual-selection hypothesis, Current Anthropology 40: 257–275. Pawłowski B. (1999) – Permanent breasts as a side effect of subcutaneous fat tissue increase in human evolution, HOMO, vol. 50/2, s. 149–162.