Aggressiveness and size: a model and two tests

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dc.contributor.authorLogue, David M.
dc.contributor.authorTakahashi, April D.
dc.contributor.authorCade, William H.
dc.date.accessioned2020-04-24T20:39:53Z
dc.date.available2020-04-24T20:39:53Z
dc.date.issued2011
dc.descriptionSherpa Romeo green journal. Permission to archive final published versionen_US
dc.description.abstractIndividual variation in aggressive behavior in animals might be caused by adaptive covariation with body size. We developed a model that predicts the benefits of aggressiveness as a function of body size. The model indicated that individuals of intermediate sizes would derive the greatest benefits from being aggressive. If we assume that the cost of aggression is approximately uniform with respect to body size, selection should favor higher aggression in intermediate-sized individuals than in large or small individuals. This prediction was tested by stimulating male Madagascar hissing cockroaches, Gromphadorhina portentosa, with disembodied antennae and recording the males’ aggressive responses. Antennae from larger males evoked weaker responses in subjects, suggesting that males obtained information about their opponents’ size from the opponents’ antennae alone. After accounting for this effect, we found support for the key prediction of our model: aggressiveness peaked at intermediate sizes. Data from actual male-male interactions validated that the antenna assay accurately measured aggressiveness. Analysis of an independent data set generated by staging male-male interactions also supported the prediction that intermediate-sized males were most aggressive. We conclude that adaptive covariation between body size and aggressiveness explains some interindividual variation in aggressiveness.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationLogue, D. M., Takahashi, A., & Cade, W. H. (2011). Aggressiveness and size: A model and two tests. The American Naturalist, 177(2), 202-210. doi.org/10.1086/657978en_US
dc.identifier.urihttps://hdl.handle.net/10133/5709
dc.language.isoen_USen_US
dc.publisherUniversity of Chicago Pressen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.departmentDepartment of Psychologyen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionUniversidad de Puerto Ricoen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.urlhttps://doi.org/10.1086/657978en_US
dc.subjectAggressionen_US
dc.subjectBehavioral syndromesen_US
dc.subjectChemical communcationen_US
dc.subjectCockroachen_US
dc.subjectGromphadorhina portentosaen_US
dc.subjectMale-male competitionen_US
dc.subjectBody size
dc.subject.lcshAggressive behavior in animals
dc.subject.lcshCockroaches as laboratory animals
dc.titleAggressiveness and size: a model and two testsen_US
dc.typeArticleen_US
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