Dead, live guppies vie for paternity
Females can use sperm months after mates go belly up
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/06/sm_M8-male26female-guppy0745_DxO_raw.jpg?fit=860%2C460&ssl=1)
Among wild guppies in Trinidad streams, a female (left) can store sperm from a male (right). In a new experiment, female Trinidadian guppies lived much longer than males and still used sperm left over from the generation of the grandfathers of current males.
Paul Bentzen/Dalhousie