Who will become dominant?
The roles of individual #behaviour, body size & environmental predictability in brown #trout fry hierarchies
European Journal of Ecology, 2017, 3(2), 123-133
Authors investigated performance of #browntrout fry with different behavioural characteristics, in environments differing in food predictability. They have hypothesised that more active individuals would be favoured by a predictable environment, as compared to an unpredictable environment, as a consequence of being more aggressive and likely to dominate the best feeding stations.
The hypothesis was not supported, as more active individuals instead tended to perform better, in terms of growth and survival, in unpredictable environments. However, this effect may stem from initial size differences, as more active fish also tended to be larger.
Näslund, J., Berger, D. & Johnsson, J. (2017). Who will become dominant? Investigating the roles of individual behaviour, body size, and environmental predictability in brown trout fry hierarchies. European Journal of Ecology, 3(2), pp. 123-133. doi:10.1515/eje-2017-0020
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