Male giant water bugs win females by babysitting
Sexual selection favors paternal care underwater
![male giant water bug carrying eggs on its back](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/05/050316_sm_waterbeetle_free-1.jpg?fit=860%2C460&ssl=1)
WHEN DAD BABYSITS Those eggs on the back of a male giant water bug (Appasus japonicus shown) are so attractive to females that sexual selection may be a major force in maintaining dads-only care for young.
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