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Short‐term dominance: stability and consequences for subsequent growth
Author(s) -
Tiira K.,
Laurila A.,
Enberg K.,
Piironen J.
Publication year - 2009
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2009.02253.x
Subject(s) - salmo , biology , dominance hierarchy , dominance (genetics) , brown trout , social hierarchy , salmonidae , zoology , fish <actinopterygii> , rainbow trout , ecology , demography , fishery , psychology , social psychology , aggression , biochemistry , sociology , gene
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.