Male Black Widows Poach Rivals' Approaches
This is scientific. Americans sixty seconds science. I'm Christopher Dodd Yata for male black widow spiders. Finding a mate is risky risky business. They have to go on an epic journey. Catherine Scott in Iraq knowledge EST at the University of Toronto. If the population she studies on Canada's Vancouver Hoover Island she says the spiders only twelve percent chance of surviving their scramble over sand dunes implants and they have very poor eyesight and their traveling at night so one way males find females is by sniffing from afar the fair Ramon perfume on their webs but Scott has now discovered an alternative way males find mates by subjecting the spiders to a race for each male before he started. We weighed him in on a tiny scale and we painted him with racing stripes and measured the length of his his legs. We had a finish line of fairmount omitting females and we released males at various distances from those females to see whether they arrived out of females. Weber not and how fast they got their what suppressor was at the males that started farthest nearly two hundred feet away actually traveled fastest towards females else and the reason they poached the pads of their rivals. WHO's been continuous. Soak drag lines as they move. These spiders are much more adept at walking and running on silk than they are on the ground so we realized that maybe the males that we released far away from the females were encountering. These silk highways left by rival males else and running along them. The details are in the proceedings of the Royal Society. B and follow up experiments in the lab confirmed that male black widows are indeed willing to risk a run in with a rival to win a chance to pass on their genes a chance that makes it worth traveling along the Silk Road. Thanks for listening for scientific American sixty seconds science. I'm Christopher Indonesia.