Howard Hughes Medical Institute (HHMI) reposted this
Researchers in the Vosshall lab have discovered the first evidence of what happens when a female mosquito chooses to mate for the one and only time in her life. A female mosquito only gets one shot to get reproduction right: She mates just a single time in her entire life. With the stakes so high, it would make sense for these insects to be quite choosey when it comes to selecting a mate. And yet a long-standing assumption in the field was that males controlled the process, and females were simply passive recipients of sperm. “There’s an inherent contradiction in this assumption,” says Rockefeller University and Howard Hughes Medical Institute mosquito expert Leslie Vosshall. “If females have no say, then multiple males should be able to mate with them all the time. So how can a female mosquito both be a helpless creature but also the decision maker?” Puzzled by the paradox, Vosshall and her team dove into the moment-by-moment, nuts-and-bolts of mosquito mating. The resulting study, recently published in Current Biology, uncovered the first evidence that scientists had it backwards: What makes mating possible is a subtle behavior of the female—a physical movement of her genitalia. Moreover, no subsequent physical pairings trigger this behavior again, regardless of how many males try, or how often they try—and they try a lot. “It’s a very fast, very subtle change, but it entirely dictates whether mating occurs,” says lead author Leah Houri-Zeevi, a postdoctoral scientist in the lab. “If she makes this movement, it happens. If she doesn’t, it doesn’t matter what the male does—no successful mating will occur.” Learn more here: https://lnkd.in/e9Wrxjac