Tried this with an old girlfriend once....didnt workI thought this was a joke at first. Never heard of it before.
This is what I gathered. I suspect that their is a high degree of kinship in any one particular DCA. Lots of brothers and first cousins. So, if we are to follow the theory that there was an evolutionary drive to propagate a patriarchal line, then there would be no defenses against mass-mating within the one DCA (cause that clearly did not develop, poor girls), but instead the drones wanted to ensure that the queen did not fly to another DCA for a completely different set of genetics. So they caused a delayed blindness to set in preventing her from venturing out again.As I understood the article that I saw it takes a while for the toxin to take effect. Its not instant. It may explain why the queen stops taking mating flights.