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PubMed · 3304580

Abnormal behavior.

K A Houpt
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Abstract

Farm animals exhibit abnormalities of sexual, maternal, and other social behaviors as well as many stereotyped behaviors. The types and incidence of these abnormal behaviors may depend on the species, its diet, and the environmental conditions under which it is normally maintained. An understanding of the causes of various abnormal behavior patterns will enable the producer and veterinarian to better manage populations of livestock and improve their well-being.

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AggressionAnimalsAnimals, DomesticBehavior, AnimalMaternal BehaviorSexual Behavior, AnimalStereotyped BehaviorJournal ArticleReview

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K A Houpt. 1987. Abnormal behavior.. https://doi.org/10.1016/s0749-0720(15)31157-9

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Costs of deception: cheaters are punished in rhesus monkeys (Macaca mulatta).

From a functional perspective, deception can evolve in animal populations but should be constrained by the costs associated with detection. It then follows that withholding information should be more prevalent as a form of deception than active falsification of information because of the relative difficulties associated with detecting cheaters. Empirical studies of deception have focused on the benefits of cheating but have provided no data on the costs associated with being detected as a cheater. I present results from field experiments on rhesus monkeys (Macaca mulatta) which show that individuals discovering food announce their discoveries by calling on 45% of all trials. Discoverers who failed to call, but were detected with food by other group members, received significantly more aggression than vocal discoverers. Moreover, silent female discoverers ate significantly less food than vocal females. This demonstrates that there are significant costs to withholding information. Such costs may constrain the frequency with which deception occurs in this and other populations.

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