uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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
Artificial Selection on Relative Brain Size Reveals a Positive Genetic Correlation Between Brain Size and Proactive Personality in the Guppy
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Animal ecology.
Show others and affiliations
2014 (English)In: Evolution, ISSN 0014-3820, E-ISSN 1558-5646, Vol. 68, no 4, 1139-1149 p.Article in journal (Refereed) Published
Abstract [en]

Animal personalities range from individuals that are shy, cautious, and easily stressed (a "reactive" personality type) to individuals that are bold, innovative, and quick to learn novel tasks, but also prone to routine formation (a "proactive" personality type). Although personality differences should have important consequences for fitness, their underlying mechanisms remain poorly understood. Here, we investigated how genetic variation in brain size affects personality. We put selection lines of large- and small-brained guppies (Poecilia reticulata), with known differences in cognitive ability, through three standard personality assays. First, we found that large-brained animals were faster to habituate to, and more exploratory in, open field tests. Large-brained females were also bolder. Second, large-brained animals excreted less cortisol in a stressful situation (confinement). Third, large-brained animals were slower to feed from a novel food source, which we interpret as being caused by reduced behavioral flexibility rather than lack of innovation in the large-brained lines. Overall, the results point toward a more proactive personality type in large-brained animals. Thus, this study provides the first experimental evidence linking brain size and personality, an interaction that may affect important fitness-related aspects of ecology such as dispersal and niche exploration.

Place, publisher, year, edition, pages
2014. Vol. 68, no 4, 1139-1149 p.
Keyword [en]
personality, guppy, Poecilia reticulate, cognition, Brain size
National Category
Medical and Health Sciences Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-224344DOI: 10.1111/evo.12341ISI: 000333553500017OAI: oai:DiVA.org:uu-224344DiVA: diva2:717001
Funder
Swedish Research Council
Note

De två första författarna delar första författarskapet.

Available from: 2014-05-13 Created: 2014-05-09 Last updated: 2017-12-05Bibliographically approved

Open Access in DiVA

fulltext(509 kB)214 downloads
File information
File name FULLTEXT01.pdfFile size 509 kBChecksum SHA-512
c4a26b56ebfd38f1a27f71619d4d7246103688ad8e115f47adfb8bc08bb7079d1cab2a5fd87ee44d958bfc1e457a8492892b1f098214e07ae2381731fa7a78ae
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Authority records BETA

Kotrschal, AlexanderBundsen, AndreasMaklakov, Alexei A.Winberg, SvanteKolm, Niclas

Search in DiVA

By author/editor
Kotrschal, AlexanderBundsen, AndreasMaklakov, Alexei A.Winberg, SvanteKolm, Niclas
By organisation
Animal ecologyDepartment of NeurosciencePhysiology
In the same journal
Evolution
Medical and Health SciencesNatural Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 214 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 591 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • 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