reproduction

Zooillogix

Category archives for reproduction

Golden showers, crayfish style!

Researchers at the University of Hull, UK, recently published a paper about chemical signaling in reproductive behavior in crayfish. Yep, crayfish. Apparently, the female must release urinary cues in order to initiate courtship behavior in males. No pee, no sex. Unfortunately (and understandably), being peed on also triggers aggression in this species. The authors argue…

According to a paper to be released in the September issue of the journal “American Naturalist”, the number of sperm a male ejaculates may be correlated to his attractiveness as measured by the females in the population. The idea came forth after scientists at University College London and the Oxford University mathematically modeled the optimal…

A new exhibit at New York’s Museum of Sex seeks to expose the hidden sex lives of animals, and some of its themes may be shocking to prudes. As the exhibit shows (graphically), animals engage in diverse, unconventional acts of sex, and sex plays a much larger role in many animal societies than serving merely…

Adorable! Surinam toads of the family Pipidae have a broad, flat shape and leaf-like appearance, but who cares about that…? They embed fertilized eggs in the mother’s back from whence the babies emerge! Adorable? Horrifying? What was your reaction to the movie Alien? Damn… it looks like Pharyngula beat us to the punch. Whatevs… Surinam…

Don’t look at me, I’m hideously bloated! Researchers at Ben-Gurion University in Negev, Israel, have identified whiteleg shrimp as the only known species where the male has a reproductive cycle or “period.” The male whitelegs–actually a type of prawn–generate two sperm packets per month which they attach to their female mates during reproduction. If, however,…