Some small carpenter bees have a clever way of getting help with their domestic chores, such as raising their young. The mom forcibly turns her firstborn daughter into a maid and babysitter. The mom does this by underfeeding that eldest bee. This daughter not only gets small portions of food but also a diet especially low in protein, new research shows. And before long, this bee is the runt of her brood — and bullied by her mom.
In bees and some other insects, growth of the young largely depends on how much food they get. So, by tinkering with their diet, a mother can control her offspring’s size.
Small carpenter bees are a type of solitary insect. No hives for them. Adult females carve a tunnel into the dead, broken stem of a flowering plant. The bees don’t eat that chewed wood but throw it away. Inside her tunnel, a mom will fashion a comfy nest in which to lay eggs and nurture her young. Ceratina calcarata is a common species of small carpenter bee in eastern North America. Only about the size of an eraser at the top of a pencil, females of this species nest in spring.
Photo credit: Molly Jacobson