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  • Title: Short-term dominance: stability and consequences for subsequent growth.
    Author: Tiira K, Laurila A, Enberg K, Piironen J.
    Journal: J Fish Biol; 2009 Jul; 74(10):2374-85. PubMed ID: 20735559.
    Abstract:
    Dominance status was determined among groups of four fish by using individuals from eight brown trout Salmo trutta populations. Subsequent growth of the fish was later recorded in larger groups. Seven months after the first set of trials, an additional set of dominance trials was performed by using the same fish. Social status affected subsequent growth; individuals having the lowest ranks grew less when compared to the higher ranking fish. Furthermore, the short term dominance hierarchy was rather stable between the two trials. This was especially the case with the lowest ranking fish, which tended to remain in the lowest position also in the second trial. The results suggest that the short term dominance trials done among few conspecifics reflect relatively well not only the subordinates' relative but also absolute social status.
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