Practice question

Prior predator exposure can produce learned recognition, while the presence of older, experienced tadpoles supplies social information about danger. Combining both sources can yield the strongest escape response: exposed individuals have formed an association between predator cues and risk, and experienced companions amplify or validate that information through alarm behavior. Tadpoles may detect chemical cues from injured conspecifics, predator odor, or changes in neighbors’ activity and then reduce movement, seek refuge, or perform rapid escape swimming. Naïve isolated animals lack both personal and social information; experienced but isolated animals lack group reinforcement; naïve animals with older conspecifics can learn socially but have no prior direct conditioning. The precise outcome depends on species, predator, cue concentration, and the behavioral metric used, and the generic reference given does not identify the claimed experiment. Nevertheless, the keyed combination is mechanistically plausible because multiple information channels can improve risk assessment. Such learning allows prey to express costly defenses selectively rather than maintaining maximum vigilance in safe conditions.