Aggressiveness and kinship in brown trout (Salmo trutta) parr |
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| Authors: | Olsen, K. Hakan Jarvi, Torbjorn Lof, Anna-Carin |
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| Affiliation: | aDepartment of Limnology, Vertebrate Physiology & Behaviour Unit, Uppsala University Norbyv!["a"]("/math/amacr.gif") gen 20, S-752 36 Uppsala, Sweden bInstitute of Freshwater Research, Swedish National Board of Fisheries S-170 11 Drottningholm, Sweden cFisheries Research Station, Swedish National Board of Fisheries Brobacken, S-810 70 Alvkarleby, Sweden |
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| Abstract: | In a series of experiments, kin-biased behavior of young browntrout (Salmo trutta) was observed. The aggressiveness shownby groups of familiar siblings (siblings reared together sincefertilization) and groups of unfamiliar siblings (siblings rearedapart since fertilization) was significantly lower comparedto that of mixed groups of two unrelated sibling groups (offspringof two different pairs of parents). The evolution of kin-biasedbehavior, as shown by a reduction in aggressiveness, is assumedto have evolved through a kin-selective mechanism.[Behav Ecol7: 445-450 (1996)] |
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| Keywords: | aggressiveness brown trout kin recognition salmonids siblings. |
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