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Individual consistency and context dependence in group-size preference of Eurasian perch
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2016 (English)In: Behavioural Processes, ISSN 0376-6357, Vol. 133, 6-11 p.Article in journal (Refereed) Published
Abstract [en]

Many fish spend a large part of their life in groups. The size of the group influences potential costs and benefits of group living, and depending on context a fish may prefer different group sizes. Group-size preference may also depend on personality, with social individuals expected to prefer larger groups than asocial fish. This study investigates context-dependent group size preference in two populations of a highly social fish, young of the year Eurasian perch. The perch were given a choice between a group of two and a group of eight conspecifics under three different situations: the small group was feeding, the small group had access to shelter, and a control treatment with no extra stimuli. In general, the perch associated more with the large group, but significantly less so during the food treatment. Perceived access to shelter did not affect group size preference compared to the control treatment. Consistent individual differences in social attraction were found within each context, but not among all contexts. Also, an individual's sociability did not correlate with its degree of boldness, indicating a lack of a behavioural syndrome between the two personality traits in the studied populations. The results highlight the importance of considering environmental context when studying social behaviour in obligate social fish, and show the complexity of the concept of sociability as a personality trait by demonstrating context dependence in individual consistency in social behaviour.

Place, publisher, year, edition, pages
2016. Vol. 133, 6-11 p.
National Category
Zoology
Identifiers
URN: urn:nbn:se:umu:diva-130237DOI: 10.1016/j.beproc.2016.10.009ISI: 000390507900002PubMedID: 27771395OAI: oai:DiVA.org:umu-130237DiVA: diva2:1065812
Available from: 2017-01-16 Created: 2017-01-14 Last updated: 2017-01-16Bibliographically approved

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Hellström, GustavHeynen, Martina
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf