What do rove beetles prey on in decomposition?

• A. Fly eggs
• B. Live mammals
• C. Plant leaves
• D. Vertebrate bones

Answer: (A)

Rove beetles are predators that take advantage of the insects already present on decomposing remains. In this environment, blowflies are rapid colonizers and lay many fly eggs on the carcass. Those eggs are small, accessible, and provide an easy food source, so rove beetles commonly prey on fly eggs. By feeding on these eggs, they can help limit the next generation of hatched larvae that would feed on tissue, influencing the insect succession on the corpse.

The other options don’t fit this feeding pattern. They don’t specialize in hunting live mammals, plant material, or bones on carrion; those resources are typically associated with other organisms or later-decomposing stages.