Baker bellis sperm competition

In both instances, polyandrous sexual activities were more frequently represented than polygynous sexual activities. Proceeding from the notion that deviant sperms might be linked to mating habits, in Robin Baker and Mark Bellis proposed that different kinds of sperms might be adapted for different functions. To expand this exploration, we also examine whether preferences vary with respect to the menstrual cycle. Notes Includes bibliographical references p. Evolutionary Psychology, 2, Semen displacement as a sperm competition strategy.
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Other studies have found no connection to sperm transport or fertility. If you are a seller for this product, would you like to suggest updates through seller support? Putting the interpersonal back into interpersonal attraction. View online Borrow Buy Freely available Show 0 more links How to write a great review. History of Western Philosophy.
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Human Sperm Competition - R Robin Baker, M A Bellis - Bok () | Bokus

Of course, we humans also reproduce and therefore cannot really read about these divergent interests impartially. We were unable to find this edition in any bookshop we are able to search. It may require cleanup to comply with Wikipedia's content policies, particularly neutral point of view. The history of science teaches that truth always emerges in the end. Politics and the Life Sciences.
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The following year, in response to a challenge from Sandy Harcourt, Baker and Bellis expanded their hypothesis. The testicles of gorillas are relatively tiny compared to those of chimpanzees. Introduction to theory and research on anti-cuckoldry tactics: The is no evidence that men with larger testes are more likely to engage in extra-pair copulations Simmons et al published a very good study on this in Animal Behaviour in This book discusses these implications for human sexual behaviour and human infertility problems. Amazon Business Service for business customers. Since the s, behavioural ecologists and evolutionary biologists have been fascinated by the biological implications of sperm from different males competing for fertilization of the egg in the female reproductive tract.
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