Rainbow trout personality: individual behavioural variation in juvenile Oncorhynchus mykiss
| Autor: | Krista M. Nichols, Frank P. Thrower, Ashley Elias |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine education.field_of_study Aggression media_common.quotation_subject Population Zoology Biology 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Behavioral Neuroscience 030104 developmental biology Variation (linguistics) medicine Personality Biological dispersal Juvenile Animal Science and Zoology Rainbow trout Habituation medicine.symptom education media_common |
| Zdroj: | Behaviour. 155:205-230 |
| ISSN: | 1568-539X 0005-7959 |
| Popis: | We evaluated the variation in dispersal, exploration, and aggression across time in juvenile progeny produced from wild caught rainbow trout (Oncorhynchus mykiss) at a critical developmental shift associated with the highest mortality in fish. By testing multiple ecologically relevant behaviours repeatedly in the same individuals, we simultaneously tested multiple hypotheses regarding personality, plasticity, and behavioural syndromes to better understand the innate behavioural variation in a population containing both migratory and resident life histories. There were consistent behavioural differences, or personality, between individuals across time, for dispersal, aggression, and exploration, unrelated to size or sex. The significant repeatabilities (0.10–0.46) indicate that these traits are potentially heritable. Also, we found both habituation in all behaviours and significant differences between individuals in the rate of that habituation, despite no evidence of a behavioural syndrome. The identification of this individual level variation is a step towards understanding which heritable traits selection could influence. |
| Databáze: | OpenAIRE |
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