Behavioral Ecology Blog

A little too late for Fathers Day- but….
Get your cards here

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Sexual cannibalism has been one of the most interesting and (until Thornhill 1976), confusing behaviors observed in nature.. Sexual cannibalism, typically is the label given to the situation where, usually after copulation, the female ingests the male. The classic hypothesis for it’s evolution suggests that sexual cannibalism is likely to occur in situations where [...]

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Razib’s GNXP seems to be read by a bunch of perverts as well… One of his most popular search words: Arab porn….
I’ll still claim to have the upper hand in the pervert market with the sicko that found my site with the keyword: “cats as sexual partners“
OK- the gauntlet has been thrown- who hath the [...]

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A true story
“Many of our inmates have an STD or two and we fully expected Paris to be among them after seeing her many videos online,” the doctor told Dateline Hollywood. “But we did the standard entry exam and found out that her vagina is like a Petri dish of every STD the world has [...]

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In a detailed study that served to investigate the actual nature and content of sexual dreams across a large sample of dream reports from men and women, approximately eight percent of everyday dream reports from both genders contain some form of sexual-related activity.
The study, authored by Antonio Zadra, PhD, of the Universite de Montreal, focused [...]

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Well scientists can now predict your most secret behavior by assessing your scores on various tests of personality.. Turns out- those warm and fuzzy types- and the anti-social are much more likely to be sexually promiscuous…. This story, predictably covered by LiveScience (Who Sleeps Around? Scientists Know) is based on a paper in the Journal [...]

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Traditional sperm competition theory predicts that rival males will compete not only antagonistically (sperm scoopers, etc), but also numerically (I’ll inseminate more sperm that you do) with rival males. Basically, when females are limiting, and sperm is cheap and limitless, aside from mate guarding, maximization of fertilization success comes with maximization of the ratio:
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There is an exquisitely interesting paper in this edition of The American Naturalist (Sex in the Morning or in the Evening? Females Adjust Daily Mating Patterns to the Intensity of Sexual Harassment ), providing yet another layer of complexity on the issue of sexual conflict. Basically, the authors Løvlie and TommasoPizzari studied [...]

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The great human monogamy debate continues to be one of my favorite subjects to write about- which is good, as there is always new stuff coming out to support my hypothesis.
For those of you new to it: the issue is human monogamy. Now the church, your high school sex ed. [...]

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Did you know that rats have an innate aversion to cat urine?? Well, I certainly did not. Seems reasonable though, that this represents an adaptation- i.e. where there is cat urine- there are cats- rats are in danger of being eaten by cats…. Something that might block this aversion in rats might [...]

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