How Wasps Acquire and Use Views for Homing.

Area of Science:

• Animal behavior
• Neuroethology
• Insect navigation

Background:

• Nesting insects use learning flights to create a visual map of their surroundings for nest return.
• The precise timing, structure, and navigational use of learned information during these flights remain incompletely understood.

Purpose of the Study:

• To investigate when and what ground-nesting wasps learn during their flights.
• To determine how learned visual information guides their homing behavior.

Main Methods:

• Analysis of learning and homing flights in Cerceris australis wasps using synchronized high-speed cameras.
• 3D reconstruction of wasp head position and orientation.
• Creation of panoramic views along flight paths.
• Simulation of homing flights using a virtual wasp in a 3D model.

Main Results:

• Wasps navigate in arcs around the nest, with gaze saccades and fixed-view translations.
• Wasps appear to use differences in sequential views to time the initiation of new flight arcs.
• Homing wasps utilize learned views to direct their course and ground-level features near the nest.

Conclusions:

• Ground-nesting wasps learn and utilize sequential visual information during learning flights for navigation.
• Homing behavior integrates learned panoramic views with local visual cues for accurate nest return.