Male redback spiders invite cannibalism through a ‘self-sacrificial somersault’ during sex – but why?

New research sheds light on the genetic basis of the venomous insect’s ‘weird mating behaviour’ Follow our Australia news live blog for latest updates Get our breaking news email, free app or daily news podcast If you think you’ve had a bad one-night stand, spare a thought for the male redback spider, whose sole reproductive partner eats him after sex. Male redbacks appear to invite this cannibalism through a “self-sacrificial somersault”, with new research shedding light on the genetic…