Abstract
Data on the social changes that occurred after the release of 12 additional stumptails into a free-ranging group are reported here.
In spite of the fact that the members of the two groups had known each other for years, that genealogical relatives were re-united and that there were no limitations exerted by spatial conditions and social density, the release produced dramatic increments in aggressive and other social interactions. The resident group's alpha male was killed by two newcomer males, a restructuring of the dominance order took place, and the adult females were found to be important individuals in the re-establishment of stability.
Comparisons with group formation and re-introduction experiments conducted in captive rhesus and pigtail macaques were carried out.
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Research supported by grants from the Behavioral Science Foundation (U. S.), NSF No. GB-42235 and Behavioral Science Foundation.
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Estrada, A., Estrada, R. Changes in social structure and interactions after the introduction of a second group in a free-ranging troop of stumptail macaques (Macaca arctoides): Social relations II. Primates 19, 665–680 (1978). https://doi.org/10.1007/BF02373634
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DOI: https://doi.org/10.1007/BF02373634