Seeing life in the teeming world: animacy perception in arthropods

Area of Science:

• Ethology
• Neuroethology
• Sensory Ecology

Background:

• Animacy perception is vital for survival, enabling detection of social partners and dangers.
• While well-documented in vertebrates, animacy perception in arthropods is less explicitly studied.
• Arthropod research often implies animacy detection without using the specific term.

Purpose of the Study:

• To review existing literature on animacy perception in arthropods.
• To consolidate evidence from prey categorization, predator avoidance, and social interaction studies.
• To highlight the explicit use of the term 'animacy' in arthropod research.

Main Methods:

• Literature review of studies on biological motion detection in arthropods.
• Analysis of research on shape-motion congruency as a cue for animacy.
• Examination of studies on static visual cues (e.g., facial markings) for individual recognition.
• Review of research on thanatosis as a manipulation of animacy cues.

Main Results:

• Arthropods detect biological motion, recognizing spatio-temporal patterns indicative of life.
• Congruency between an object's shape and motion influences animacy perception.
• Some arthropods utilize static cues like facial markings for individual recognition, notably paper wasps.
• Thanatosis demonstrates active manipulation of perceived liveliness by arthropods.

Conclusions:

• Arthropods exhibit sophisticated animacy perception through various sensory modalities.
• Evidence supports the presence of animacy perception across diverse arthropod behaviors.
• Further research explicitly using the term 'animacy' is needed for arthropod models.