noun
- small sensory appendages located near the antennae of crustaceans and other arthropods
Usage: biology; zoology
Examples
- The crab’s antennules help it detect chemical signals in the water.
- Marine biologists examined the antennules under a microscope.
- The antennules are shorter than the main antennae on most crustaceans.
- Damage to the antennules can affect the animal’s ability to find food.
- The lobster uses its antennules to sense changes in water chemistry.
- Researchers studied how antennules function in different species of shrimp.