When a female mates with several males, these will compete over the fertilization her eggs. This is an important evolutionary force that has led to the evolution of a diversity of male sexual organ morphologies. This is revealed ...
Plants & Animals
Oct 25, 2012
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(Phys.org)—A new multidisciplinary study on the enigmatic large Horseshoe bat – found widespread throughout South and East Africa – has revealed that instead of just one species as previously believed, the bat is in ...
Plants & Animals
Sep 14, 2012
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Discerning males remain faithful ... if you are a spider. Sex for male orb web spiders (Argiope bruennichi) is a two shot affair since the act of mating destroys their genitalia. If they survive being eaten during their first ...
Plants & Animals
Apr 24, 2012
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UC researcher finds that when it comes to hooking up with the opposite sex, genital complexities do matter.
Plants & Animals
Jan 7, 2010
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Female ducks have evolved an intriguing way to avoid becoming impregnated by undesirable but aggressive males endowed with large corkscrew-shaped penises: vaginas with clockwise spirals that thwart oppositely spiraled males.
Plants & Animals
Dec 23, 2009
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The great diversity of male sexual traits, ranging from peacock's elaborate train to formidable genitalia of male seed beetles, is the result of female choice. But why do females choose among males? In a new study published ...
Plants & Animals
Oct 22, 2009
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In a study published in PLoS ONE June 10, Chang Seok Han and Piotr Jablonski at Seoul National University, Korea, report that by evolving a morphological shield to protect their genitalia from males' forceful copulatory attempts, ...
Plants & Animals
Jun 11, 2009
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A new paper published in The Quarterly Review of Biology examines the possible effects of two properties of receiver playing fields documented in studies of animal psychology—habituation and neural adaptation—on the efficacy ...
Plants & Animals
Feb 29, 2024
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New research into the anatomy of the primate clitoris using sophisticated imaging technology reveals the wild variation in clitoral form between primate species.
Plants & Animals
Jul 6, 2023
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Males and females mate to produce offspring, but their relationships are not always cooperative. The conflict between the sexes when they behave selfishly can be negative for the whole group. A group of Japanese researchers ...
Plants & Animals
Oct 5, 2018
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