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Meerkats (Suricata suricatta) are able to detect hidden food using olfactory cues alone.
Physiology & Behavior 2019 Februrary 4
Meerkats (Suricata suricatta) are known to strongly rely on chemical signals for social communication. However, little is known about their use of the sense of smell in foraging and food detection. The aim of the present study was therefore to assess whether captive meerkats are able to (1) detect hidden food using olfactory cues alone, (2) discriminate between the odor of real food and a single food odor component, and (3) build an association between the odor of real food and a novel odor. We employed the buried food test, widely used with rodents to assess basic olfactory abilities and designed to take advantage of the propensity of certain species to dig. We found that the meerkats were clearly able to find all four food types tested (mouse, chicken, mealworm, banana) using olfactory cues alone and that they successfully discriminated between the odor of real food (banana) and a food odor component (isopentyl acetate). In both tasks, the animals dug in the food-bearing corner of the test arena as the first one significantly more often than in the other three corners. No significant association-building between a food odor and a novel odor was found within the 60 trials performed per animal. We conclude that meerkats are able to use olfactory cues when foraging for hidden food. Further, we conclude that the buried food test, employed for the first time with a non-rodent species, is a useful means of assessing basic olfactory capabilities in meerkats.
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