Induced food preference

Definition

A feeding preference acquired or modified through prior experience with a food source, as opposed to an innate or genetically fixed preference. In arthropods, induction typically occurs through postingestive feedback, associative learning with chemical cues, or developmental exposure to particular host plants or prey. The induced preference often increases acceptance of the experienced food and can reduce responsiveness to alternatives, shaping subsequent foraging decisions and potentially stabilizing host associations.

Etymology

From Latin inducere (to lead in, bring about) + food + preference; in behavioral ecology, 'induced' distinguishes experientially acquired traits from constitutive (baseline) states.

Example

Larvae of the polyphagous moth Spodoptera littoralis reared on cabbage develop an induced preference for cabbage odor; when subsequently offered a choice between cabbage and cotton foliage, they orient toward and feed preferentially on cabbage, whereas larvae reared on cotton show the reverse preference. This induction can persist into the adult oviposition stage, influencing host-plant range at the population level.

Synonyms

• acquired food preference
• experience-induced preference

Related Terms

• innate preference
• host-plant fidelity
• oviposition preference
• post-ingestive feedback
• associative learning
• chemical ecology
• polyphagy
• specialist-generalist continuum

Usage Notes

Distinguish from 'induced resistance' in plants or 'induced defenses' in prey—those terms describe changes in the food, not the consumer's preference. Induced preferences are often reversible and may decay without reinforcement, contrasting with irreversible developmental canalization. In parasitoid wasps, induced odor preferences learned during host contact improve host-location efficiency; in spider mites, induced plant preferences can mediate diet mixing and reduce toxin loads. The term is sometimes used interchangeably with 'acquired preference' in learning literature, though 'induced' emphasizes the triggering role of experience rather than the mechanism of learning.