Tactile foraging
Tactile foraging is the use of touch to locate, identify, or assess food, especially when visual cues are unavailable or unreliable.
Mechanoreception: The detection of physical stimuli such as pressure, vibration, and texture by sensory receptors. It supplies the touch signals used to detect hidden prey and food surfaces.
Star-nosed mole: A burrowing mammal with a ring of highly sensitive appendages around its nose. Its nasal appendages rapidly identify small prey by touch in dark underground tunnels.
Tactile perception: The interpretation of information received through the sense of touch. It describes how contact cues become judgments about a possible food item.
Visual foraging: Food search guided primarily by visual information. It relies on visible food cues rather than direct contact with hidden items.
Vibrissae: Specialized sensory hairs, such as whiskers, that detect nearby objects and movements. Whiskers map obstacles and prey position while an animal searches in darkness or murky water.
Platypus: A semi-aquatic egg-laying mammal with a bill rich in sensory receptors. It searches underwater for prey using bill receptors that detect touch and electrical signals.
Haptic perception: Perception of objects through active touch, combining movement and sensory feedback. Foragers can identify food by actively handling, probing, or sweeping across it.
Olfactory foraging: Food search guided primarily by odors and other airborne chemical cues. Smell can locate food before contact, unlike tactile assessment at close range.
Active touch: Perception gained by deliberately moving the body or a sensory organ to explore an object. Animals can sweep, probe, or palpate surfaces to extract more information about food.
Benthic feeding: Feeding on organisms living on or within the bottom of an aquatic habitat. Bottom-feeding animals often probe sediment for prey hidden from view.