Associate Certified Entomologist (ACE) Practice Exam

Aggregation pheromones signal insects to:

1. Find food sources

2. Form groups in communal harborages

3. Mate with others

4. Defend against predators

The correct answer is: Form groups in communal harborages

Aggregation pheromones play a crucial role in the social behavior of many insect species. When insects release these pheromones, they effectively communicate with others to come together and form groups in specific locations, such as communal harborages or breeding sites. This behavior can enhance survival by providing protection through increased numbers, facilitating resource discovery, or improving reproductive success. By gathering in groups, insects can benefit from shared resources, such as food or nesting sites, but the primary function of aggregation pheromones is to promote the physical coming together of individuals. Thus, these pheromones are essential for coordinating social interactions and enhancing group living benefits, making forming groups in communal harborages the correct interpretation of their role.